SVR-P250 Manual - Pyramid Communications
Contents
1. Page 20 Front Panel Assembly Reference Description IPS ME 8 LED Multi Color Display 25302 ies ede us 2 Digit 7 Segment LED Display 5 Conductor 4 cable 2mm 6 Conductor 4 cable 2mm 20K Pot w on off Switch R301 R324 isis Ur a rA ER EE dns 330 Ohm chip resistor 0603 RSS O 1 Rotary Quadrature Channel Switch 1J301 U 303 5 n ri eren reete o Pee PED 74HC595 Shift Reg ABS Plastic front panel Front panel 8 32 x 7 8 SS cap Volume Knob w Line Channel Knob w o Line 00 noou 58 HILL GB AIT pagg 2800000 e pnhnpnpyp EHE EHF Part 4001 08 0200 4012 02 0704 7504 04 0504 7504 04 0604 2021 04 5203 2010 02 5331 7001 04 0290 3510 01 4595 8200 03 2510 8200 08 0210 8000 34 8327 8700 04 0210 8701 04 02102. Range is 0000001 9999999 Redo Ura D JLL Band Select the frequency band to match your E SVR P250 Changing bands resets all data to default C Low C Low values confirmation req Mob Re Godo C Pet DeErm COR Polarity Determines if the COR signal from amp Re Fle the mobile is active high or low Loos Mio Repeat On Air Polarity Determines if the Tx indication Pia Surging from the mobile is active high or low 5 TweoxTwe Ersagnre Forst Radio Type Select either Conventional Trunking EMGUuUnp EMG Du woe Rot or MSV Satellite If Trunking or MSV is selected Forse the SVR P250 will go through the voice channel ap axo aio ci ree acquisition procedure during portable to base repeat mode Tx Audio If the mobile Tx audio from the SVR P250 to the mobile is connected to the mic input select Flat response If connected after pre emphasis select Pre Emp Rx Audio If the Rx audio from the mobile to the SVR P250 is connected to the discriminator select De Emp If connected after de emphasis select Flat response Power Up Channel Select either Last Channel or Home Channel Local Mic Repeat Enables or disables the local mic repeat function 1f enabled ensure the on air polarity is set correctly and the Grey wire or J5 is configured correctly see pages 8 amp 9 Priority Sampling If the SVR P250 is used in a multi vehicle environment priority sampling must be enabled for
3. Tait Electronics Limited together with their international equivalents pending patents or design applications and registered Trade Marks NZ409837 NZ409838 NZ508806 NZ508807 NZ509242 NZ509640 NZ509959 NZ510496 NZ511155 NZ511421 NZ516280 NZ519742 NZ520650 NZ537902 NZ521450 NZ522236 NZ524369 NZ524378 NZ524509 NZ524537 NZ524630 NZ530819 NZ534475 NZ534692 NZ535471 NZ537434 NZ546295 NZ547713 NZ569985 AU200328 1447 4172004216984 AU2005207405 AU2005267973 AO200811677 CA2554213 CA2574670 CN200830113833 4 EU1 532 866 EU1 599 792 EU0574655 9 EU0009 15475 GB23865476 GB238601 10 GB2413249 GB2413445 US11 232716 US10 597339 US10 520827 US5 745 840 US10 547653 US10 546696 US10 546697 US10 520827 US10 547964 US10 523952 US11 572700 US29 306491 700 800 MHz 764 776 850 870 MHz 500mW 1W 70dBe 1 5 PPM 40 33dB 25 12 5kHz Flat or 6dB octave lt 3 60 deviation 300mV 5VPP LRUSVR P250M 2390A SVRP250M 764 776 850 870 MHz 28u V 20u V 2uV to 2uV adjustable 75 65dB 25 12 5 kHz 75db 75db 1 5 PPM Flat or 6db octave 0 5 AC coupled 400 mW 8 Ohms 13 6VDC 170mA 250mA 2A 1W This product may also be made under license under one or more of the following U S Patents 4 590 473 4 636 791 4 716 407 4 972 460 5 146 497 5 148 482 5 164 986 5 185 795 5 185 796 5 271 017 5 377 229 and 5 502 767 The IMBE voice decoding Technology embodied in this product is prote
4. removing the 2 connectors Remove the two cap screws from the rear panel and slide the main circuit board out of the housing with the rear panel attached Re connect the front panel to the main PCB Connect one service monitor to the SVR P250 TNC jack and the other to the mobile antenna jack Connect the cable from the mobile radio to the SVR P250 See figure 4 on page 11 Turn on the mobile and activate the SVR P250 Adjust the repeater squelch control RV9 so that the repeater COR led is off Adjust the mobile so that the audio is squelched SVR P250 Transmitter Maximum deviation lock tone deviation Press S3 Test and adjust RV7 Lock Tone for maximum Adjust RV8 repeater deviation until the wave form just enters clipping adjust RV7 for total 60 deviation Release S3 Mobile COR Measure the voltage at TP2 R11 on the SVR P250 main PCB and record Ensure the mobile COR LED on the front panel is off Set the mobile service monitor for the mobile receive frequency RF output and CTCSS modulation of 15 deviation Measure the voltage again at TP2 and record Ensure the mobile COR LED on the front panel is on The 2 voltages at TP2 must be at greater than 2 1 VDC and less than 1 1 VDC RX audio sensitivity CTCSS deviation Setthe service monitor connected to the mobile for the mobilereceive frequency 1mV RF output Modulate the signal generator with a IKHz tone at 60 deviation and CTCSS tone at 1596 deviation Ensure that th
5. 4 of the SVR P250 and program the on air detect line for active low Solder jumper J5 will connect pin 9 to pin 4 PTT output and can be used on conventional systems only Do not install J5 for trunking operation Emergency Output Connect to the Emergency input on the mobile radio On Motorola radios the Emergency input opens from ground on activation and jumper J13 should be in the NC position On all other radios the Emergency input pulls to ground on activation and jumper J13 should be in the NO position Install the SVR P250 in the vehicle using the supplied mounting bracket and hardware Install the unit where it will be easily visible by the driver and will not interfere with the drivers vision or constitute a hazard during a vehicle collision The SVR P250 mounts in the bracket using the four 8 32 x 1 4 machine screws Do not use longer screws to mount the SVR P250 to the bracket or circuit damage may result Page 9 SVR P250 Service Manual Alignment Before aligning the SVR P250 ensure that the mobile radio is aligned per the manufacturer s service procedure Ensure that the SVR P250 is properly programmed and the jumpers are set per the previous section In order to properly align the SVR P250 you will need two service monitors and the mobile radio that the repeater will be installed with Dis assemble the repeater by removing the two cap screws on the front panel disconnect the front panel from the main chassis by
6. 6 R14 R19 820 Ohm chip resistor 2010 02 5821 ros Da E sana 5 6K chip resistor 2010 02 5562 R11 R13 R17 R23 R25 R26 R35 R38 R39 100K chip resistor 2010 02 5104 56K chip resistor 2010 02 5563 10K chip resistor 2010 02 5103 10 Ohm chip resistor 2010 02 5100 hop gi a cat eben 8 2 Ohm IW resistor 2000 10 5829 R24 R28 R40 R50 R74 essen nennen 1 0M chip resistor 2010 02 5105 470 Ohm chip resistor 2010 02 5471 1K chip resistor 2010 02 5102 SVR P250 Service Manual 470K chip resistor 2010 02 5474 24K chip resistor 2010 02 5243 33K chip resistor 2010 02 5333 T A 4 7K chip resistor 2010 02 5472 R58 R59 R70 R73 15K chip resistor 2010 02 5153 220K chip resistor 2010 02 5224 47K chip resistor 2010 02 5473 330 Ohm chip resistor 2010 02 5331 620 Ohm 1206 chip resistor 2010 04 5621 3x6mm Tact Switch 7010 06 0101 1 pin header 7300 13 0101 J TLC2272 dual op amp 3410 01 2272 LM386 audio amp 3410 01 0386 AT89C51RB2 Microprocessor 3611 02 8951 24C128 Serial EPROM 3610 01 4128 74HC595 Shift Register 3510 01 4595 LM7805CV 1 5A reg D2PAK 3410 27 7805 LM7809CV 1 5A reg D2PAK 3410 27 7809 LM7833CV 1 5A reg D2PAK 3410 27 7833 TLC2274 Quad op amp 3410 01 2274 MCP101 300 reset controller 3410 11 0300 LM321 op amp SOT23 5 3410 12 0321 MAX32322 RS232 Driver 3410 01 3232 4053 Analog Mux 3410 01 4053 Max4583 Analog Mux 3410 01 4583 2580 02 0018 6010 01 1474 4 4 4 4 4 U U U U U U U
7. SVR P250 Service Manual Table of Contents Foreword Specifications Intellectual Property Rights Functional Description Multi Vehicle Operation ESP Priority Local Mic Repeat Trunking Operation Emergency Operation WideBand NarrowBand Channels Courtesy Beep Power Up Channel LED Indicators Installation Jumpers Main Connector Alignment Programming Common Data Channel Data Transfer Menu Remote Help Flash Programming Encryption Key Loading Parts List Main PCB Parts Locator Main PCB Schematic Main PCB Foldout 1 Front Panel Assembly Foldout 2 Page 1 SVR P250 Service Manual Foreword Scope of this manual This manual contains the specifications functional description operating instructions schematic parts locator and parts list for the SVR P250 synthesized vehicular repeater This manual is intended for use by qualified service technicians to aid them with installation interfacing alignment and trouble shooting of the SVR P250 when used with other land mobile radios Service manual revisions Component changes additions and deletions may occur in the circuit design to improve operation and will be reflected in future releases of this service manual Specifications and circuit changes are subject to change without prior notice or obligation by Pyramid Communications Safety Information The SVR P250 is designed to operate within all applicable Federal regulations at the time of manufacture Proper oper
8. U U U U U U U Extruded aluminium case 8100 01 0250 Aluminium end panel 8200 04 0250 Rear panel gasket 8200 07 0252 4 5 Dual MCX cable 7504 04 0505 10ft radio cable with DB 15F conn 7500 10 1201 Shorting block for JP1 7200 03 0102 Mounting bracket 9600 05 0250 4 40 SS jack screw 8000 42 4404 8 32 x SS philips 8000 24 8324 8 32 x 3 8 SS cap screw 8000 34 8323 4 40 A SS philips 8000 24 4404 4 40 156 aluminium spacer 8000 65 4425 4 40 x 250 aluminium spacer 8000 65 4404 Aluminium heat sink Tx module 8400 05 0010 Page 19 SVR P250 Service Manual RUZ Lock 23 Eau EE EN 2081 O S umm wm 9 c23 018 m x no R51 TET R62 R i EN EN NNC27 mac mwmn5s N Sad C36 WERi3 oe 4 J2 Jil R15 ezu EE GZuEN 219 2 m NENZEH Scum NUNSEH Oti NN mamam EN GI2 NN Seu mE EN Sru mE WEGrH nnn nimi uui e HII oe yasay a m 8 LI ausu 019 PYRAMID COMMUNICATIONS
9. VR P250 cannot be loaded with encryption keys unless ordered with AES DES capability Please contact Pyramid Communications technical support for more information Entering Key Load Mode Remove the SVR P250 from its chassis and connect the control head to the unit so the channel display is visible Do not connect the FY 4 cable at this time Ensure Jumper J7 on the SVR P250 controller PCB is set to the RF position Apply power to the SVR P250 while holding the S3 TEST switch down The display of the SVR P250 will indicate during the initialization of key load mode Loading Keys The SVR P250 display will indicate LL when it is ready to accept a key load device Connect the FY 4 to the SVR P250 P7 programming jack within 15 seconds of seeing the LL appear Youcan view and write keys as long as the display shows LL If Er is displayed a time out or communications error has occurred with the key load device Start the process over from power up The SVR P250 must use encryption key numbers between 1 16 The CKR s is referenced in the SVR P250 CPS programming KYL 3000 MOTOROLA 250 KVL 3000 Plus Figure gt Return J7 to the U3 position for normal programming operation Page 17 SVR P250 Service Manual Parts List Reference Description Part Ree c UEM 6 8uFd 16V tantalum chip capacitor 1610 25 6685 C3 C5 C10 C15 C16 C18 C25 C26 C28 C29 l
10. adio cable to the SVR P250 and apply power Connect the FY 4 DB9 connector to your computer and the modular connector to P7 at the front of the SVR P250 main PCB the channel indicator should show PC Start the FLIP software Install a shorting jumper onto J12 Flash Program U3 1 Press the Reset switch S2 In the FLIP software press F4 load config and locate the Atmel directory on your computer select and load the SVRP250 cfg file The FLIP software will automatically establish communications with the IC in the SVR P250 Ifit does not wait until it times out click OK to close the error message check the com port cable etc and start at the beginning of step 1 When FLIP is successful it will populate the device data fields on the right side of the PC screen Do not change any of these settings On the left side of the screen confirm the Erase Blank Check Program and Verify boxes are checked In the center of the screen confirm the SVR P250 HEX file is loaded Click the Run button to flash U3 with the hex file Each of the checked boxes will turn green in series as things progress If any of them fail verify all of the connections as above and start over at step 1 Page 16 SVR P250 Service Manual Encryption Key Loading Key loading is accomplished by using our standard FY 4 programming cable a Motorola KVL 3000 Plus key loading device and the Pyramid Communications KLA 250 key loader adapter as shown in figure 1 C The S
11. ation and service procedures will assure continued compliance with these regulations e Donot operate the SVR P250 without an antenna or appropriate RF load connected to the antenna connector Donotoperatethe SVR P250 in the presence of unshielded electrical blasting caps or explosive environmental conditions Do not operate the SVR P250 while refueling the vehicle or in the presence of explosive fumes Do not operate the SVR P250 with persons standing closer than 2 feet from the mobile or repeater antenna FCC information The SVR P250 complies with the FCC rules parts 90 and 22 for radio frequency transmitters The user must apply license to operate the SVR P250 transmitter pursuant to parts 90 243 and 90 247 Other FCC rules may apply depending on the class of service the user qualifies for A complete listing of FCC rules and regulations may be ordered from Superintendent of Documents Government printing office Washington DC 20402 The following information pertaining to the SVR P250 should be included in the FCC license application VHF UHF 700 800 MHz Type Acceptance LRUSVR P250V LRUSVR P250U LRUSVR P250M Output Power 0 25 2 0W 0 25 2 0W 0 25W 2 0W Emission designators 1OKOF1D 10 10OKOF7D 10KOF7E 11K0F3E 12K3F1D 16 4K8F2D 7K6F1D 8KIFID 8KIFIE 8K1F7D 8K1F7E SKAF2D Frequency band 136 174 MHz 450 530MHz 764 870 MHz Number of Channels 20 20 20 Page 2 Transmitter Frequency Ra
12. cally sampling for handheld activity carrier and proper tone during base to portable transmissions During sampling if the SVR P250 detects a handheld transmission it will cease transmissions key the mobile radio and repeat portable to base This allows the handheld to respond during repeater hang time or during full duplex interconnect calls Priority sampling can be enabled disabled through PC programming and the interval can be programmed between 25 seconds and 2 5 seconds in 25 second increments Priority sampling is not available in P25 mode The SVR P250 has a programmable time out timer for base to portable transmissions If the mobile COR is active for more than the programmed time and the SVR P250 is the priority unit it will send a double blip and cease transmission until the mobile COR is inactive The time out is in affect regardless of whether the SVR P250 is programmed for priority sampling or not Multi vehicle operation The SVR P250 has 2 different multi vehicle priority formats both are compatible with the existing SVR 200 and Motorola PAC RT formats The new SVR P250 with ESP logic has enhanced features that ensures a priority vehicle is selected and ready to transmit during the idle time rather than during voice transmissions The 2 formats are explained below SVR 200 Legacy format When the SVR P250 is first activated it will transmit a short lock tone that alerts the user that the system is functioning It wi
13. cted by Intellectual Property Rights including patent rights copyrights and trade secrets of Digital Voice Systems Inc This voice coding Technology is licensed solely for use within this Communication Equipment The user of this Technology is explicitly prohibited from attempting to decompile reverse engineer or disassemble the Object Code or in any other way convert the Object Code into a human readable form Protected by U S Patents 5 870 405 5 826 222 5 754 974 5 701 390 5 715 365 5 649 050 5 630 011 5 581 656 5 517 511 5 491 772 5 247 579 5 226 084 and 5 195 166 Page 3 SVR P250 Service Manual Functional Description Generally vehicular repeaters are used as mobile extenders in cross band operation the link is VHF UHF 800 MHz simplex and the mobile is Lo band VHF UHF or trunking In band operation is possible but care must be taken to prevent interference between the mobile s higher power transmitter and the repeater receiver Proper frequency selection and antenna placement are important even in cross band operation but especially for inband use Low power pre selector cavities may be placed in line with the repeater antenna cable since it is simplex and low power cs Important Note Analog Operation The SVR P250 is designed to operate on simplex frequencies part of the multi vehicle format dictates that all of the SVR P250s must be able to monitor all link traffic on site and be able to determine if a handheld is t
14. e SVR P250 mobile COR and repeater PTT LED s are on Adjust RV5 on the SVR P250 main board for 75 deviation if CTCSS DCS transmit is programmed adjust for 60 deviation if carrier squelch transmit as read on the service monitor connected to the SVR P250 Turn the RF output from the mobile service monitor offand ensure thatthe SVR P250 mobile COR and repeater PTT LEDs are off Local mic repeat If the SVR P250 is programmed for local mic repeat key the mobile local mic and inject an audio signal into the local mic to produce 60 deviation on the service monitor connected to the mobile Confirm that the SVR P250 repeater PTT LED is on adjust RV6 for 60 deviation as read on the service monitor connected to the SVR P250 Unkey the mobile radio Page 10 SVR P250 Service Manual Communications Monitor A Mobile Radio Interface Cable Communications SVR F250 Monitor B Figure 4 Page 11 SVR P250 Service Manual Programming Using the Software The SVRP250CPS personalization software is used to program the SVR P250 for all of the operating parameters and options The software is compatible with Windows 2000 and later operating systems The software is menu driven and on line help is available at any time by clicking the left mouse button on the HELP icon on the right side of the to
15. eceiver bandwidth and transmitter modulation characteristics the audio levels into and out of the SVR P250 are automatically adjusted so the levels at the mobile will be correct with either bandwidth selected Courtesy Beep If enabled the SVR P250 will send a short beep to the handheld user at the end of each portable to base transmission to confirm that the user is still within range Power Up Channel The SVR P250 can be programmed to revert to the last channel used when powered down or a pre programmed Home Channel Page 6 SVR P250 Service Manual LEDs The SVR P250 has a 2 digit channel display as well as eight status LEDs CPU Flashes at a 1 Hz rate to indicate proper operation of the microprocessor PRI When on indicates that the unit is at priority count zero and will repeat all transmissions RCOR Repeater Carrier detect RTONE Repeater sub audible decode when on indicates a condition to repeat portable to base RTX Repeater transmit indicator MCOR Mobile unmute detector indicating a condition to repeat base to portable MTX Mobile transmit indicator OPT Emergency Tone Code Decode ce Ifthe decimal point is illuminated in the 2 digit channel display it indicates a P25 channel is selected SVR P250 Cor Tone Tx Tx Rptr Mob Page 7 SVR P250 Service Manual Installation Before installing the SVR P250 ensure that the mobile radio is properly aligned per the manufac
16. hen one of the counts 0 that SVR P250 will send lock tone for 800 mS assume priority and begin sending the beacon tone every 10 seconds as before Since the beacon tone must be heard every 10 seconds it does not have busy carrier lock out and will send the tone if 2 handhelds are communicating directly or in the presence of co channel interference Local Mic Repeat If the handheld operator is out of the vehicle and their partner still in the vehicle were to key the mobile radio using the local mic the SVR P250 will detect the local PTT and repeat the transmission to the other handhelds so that both sides of the conversation will be heard by everyone on the link The local mic repeat function can be enabled disabled via the PC software The SVR P250 also has a local receive audio speaker jack that enables the person in the vehicle to monitor portable to base transmissions that are being repeated through the mobile If the users wish to communicate portable to portable without accessing the mobile repeater they may transmit on the same frequency without tone code or a different tone code the SVR P250 only responds to carrier and proper tone code from the handhelds Page 5 SVR P250 Service Manual Trunking operation When the SVR P250 is connected to a trunking mobile and the handheld operator wishes to access the system they key their handheld briefly then release The SVR P250 will attempt to acquire a voice channel on the trunki
17. ll then assume the priority status and be ready to repeat any base to portable or portable to base transmissions If another unit arrives on scene and is activated it too will transmit the lock tone when Page 4 SVR P250 Service Manual the first SVR P250 detects the lock tone from the second unit it will increment a priority counter and will no longer repeat any transmissions The recently arrived unit will be the priority repeater and the first unit will be 1 count away from priority This process will continue for each unit that arrives at the site creating a priority hierarchy for up to 256 vehicles each with a unique count and only one unit at priority status The SVR P250 will not transmit its lock tone if the radio channel is busy when first enabled It will wait in non priority status until all transmissions cease then send its lock tone and become the priority unit Even though the other SVR P250s are not at priority status they will continue to monitor the channel for activity If the priority unit were to leave the scene or become disabled the other units will detect the condition to repeat and determine that there is no priority unit repeating the transmission They will then begin to decrement their priority counters until one of them reaches the priority status and begins repeating the transmission Since the SVR P250s are all at different counts only one will reach priority status and begin transmitting The other
18. ng system by keying the mobile for 800mS and monitoring the on air detect line from the mobile If it does not see the radio transmit at all system is busy it will send a low tone to the hand held operator to alert them that the system is busy The SVR P250 will automatically retry every 5 seconds and send busy tone to the handheld with each unsuccessful attempt to indicate progress of the call attempt If unsuccessful after 30 seconds the SVR 250 will transmit intercept tone to alert the handheld operator that the call attempt failed When the SVR P250 detects that the mobile is transmitting it will continue to monitor the on air line until the transmitter remains keyed for at least 250mS to ensure that the radio is not handshaking or retrying After successful acquisition ofa voice channel it will continue to hold the mobile PTT active for 2 seconds and transmit a go ahead blip to the handheld operator The user then keys their handheld to speak on the voice channel If the user does not key up within the 2 second period the SVR P250 will unkey the mobile and send intercept tone as before Ifthe user keys their handheld only once or they key the first time for more than second the SVR P250 will cancel the call attempt and send intercept tone to the handheld operator All of the queuing and error tones will only be sent if the handheld is not transmitting to ensure that the user hears the proper tones The SVR P250 can also be programmed to wo
19. nge Rf power out Spurious emissions Freq stability 30 60 C Hum and Noise Audio response 300 3kHz Audio distortion Local mic sensitivity FCC Type Acceptance Industry Canada Approval Receiver Frequency Range RF sensitivity Analog Digital 5 BER Squelch sensitivity Selectivity Spurious image rejection IMD response Frequency stability Audio response 300 3kHz Audio output Local Rx Audio Power Requirements DC Supply Standby Receive Transmit Physical Dimensions Weight Case SVR P250 Service Manual Specifications VHF 136 174 MHz 500mW 2W 70dBe 1 5 PPM 43 38dB 25 12 5kHz Flat or 6dB octave lt 3 60 deviation 300mV 5VPP LRUSVR P250V 2390A SVRP250V 136 174 MHz 28u V 20u V 2uV to 2uV adjustable 75 65dB 30 15 kHz 75db 75db 1 5 PPM Flat or 6db octave 0 5 AC coupled 400 mW 8 Ohms 13 6 VDC 170 mA 250 mA 1 54 2W 5 75 W x 8 L x 2 25 H 36 oz UHF 450 530 MHz 500mW 2W 70 dBc 1 5 PPM 43 38dB 25 12 5kHz Flat or 6dB octave lt 3 60 deviation 300mV 5V PP LRUSVR P250U 2390A SVRP250U 450 530 MHz 28uV 20u V 2uV to 2uV adjustable 75 65dB 25 12 5 kHz 75db 75db 1 5 PPM Flat or 6db octave 0 5VPP AC coupled 400mW 8 Ohms 13 6VDC 170mA 250mA 1 75A 2W One piece extruded aluminium Intellectual Property Rights This product may be protected by one or more patents or designs of
20. ode Emg Code The secondary tone code when received will initiate an Emergency sequence Tx Code In Analog mode the SVR P250 does not normally transmit sub audible signalling In P25 mode the SVR P250 must transmit a NAC code If enabled the Tx code should not be the same as the Rx or Emg Code Lock Tone This is the tone burst Analog Mode or NAC code P25 mode first transmitted when the SVR P250 is enabled and sent every 10 seconds ifESP priority mode is selected The tone must be the same in all vehicular repeaters in the system Encrypt Key In P25 mode this specifies which stored Encryption key is used Range 1 16 P25 If selected the channel will be P25 phase 1 CAI compliant If not selected the channel is analog Encrypton If selected the channel will be encrypted P25 mode Only PL Encode f selected sub audible transmit is enabled for that channel Analog Mode Only EMG If selected the Emergency function is enabled for that channel P25 Mode Only NB Ifselected the channel BW is 12 5 15 kHz Ifnot selected the channel BW is 25 30kHz Analog Mode Only Courtesy Beep If selected a short beep will be sent to the handheld user at the end of each portable to base transmission to confirm they are still within range Tx Pwr The transmitter power can be set on a per channel basis Select 0 5W 1W or 2W ANE PIZS haan Data iva m wi ol HH Ra Th Frega 1 160 61000 160 61000 fien eic
21. ol bar Important Note Before attempting to program the SVR P250 start the software and ensure the FY 4 programming cable is plugged into the correct serial port The com port may be selected under the Transfer menu Plug the FY 4 programming cable into P7 on the front of the SVR P250 the channel indicator should show PC c Wm Menu selections File Open Allows youtoloada previously saved file from disk Enter the file name or select from the Windows Dialog box Only files with the P25 extension can be loaded Save Allows you to save the current configuration to disk Enter the file name to save as or select a previous file from the Windows Dialog box to overwrite The P25 extension is automatically added to the file name The program will prompt you before overwriting an existing file Print Sends the current configuration to the selected printer Make sure the printer is on line and paper is loaded before executing this command Exit You will be asked to confirm before exiting the program The software will also prompt you if the configuration has changed since program start up and data has not been saved to disk Page 12 SVR P250 Service Manual Common Data ll File 15 charactername for this profile stored Fle Nae in E7PROM Number of Channels Select 1 20 channels Cowon Dats Radio Unit ID Used for P25 channels only e m each SVR P250 should have aunique Radio ID
22. on 20 1000 3 20 1000 36061000 4 ien inop fiet i000 E fien eicon fied 61000 E Page 14 SVR P250 Service Manual Transfer Send Downloads the current configuration to the SVR P250 The program will prompt you to make the FY 4 connection before downloading Download takes approx 2 seconds Receive Uploads the current configuration from the SVR P250 The program will prompt you to make the FY 4 connection before uploading Download takes approx 1 second Com Port Selects the serial port to use for uploading and downloading between the PC and the SVR P250 Comm ports 1 8 are supported Help On line context sensitive help is available for all entry fields by selecting the field on a form and clicking on the Help Icon on the tool bar Additional help menu items About Gives you version information about the software and contact information for Pyramid Communications Remote Tech Support Remote Tech Support is a utility that allows the Customer Service Technicians at Pyramid Communications to remotely access your computer via the internet in order to troubleshoot any problems you might be having with the software or to assist you in operation of the program Please call Pyramid Communications during normal business hours prior to selecting remote support The Technician will give you a password to enter and the remote connection screen will appear 4 PYRAMID Your IP Address is 172 16 1 8 Polling support f
23. or connection please wait Once the internet connection is made the Technician will be able to see your computer screen at their location and assist you with the program The remote connection is only active when this item is selected and can only be enabled by the local PC user Page 15 SVR P250 Service Manual Flash Programming The SVR P250 uses an Atmel 89C51RB2 microprocessor which contains the operating system The chip can be reprogrammed in circuit using Atmel s FLIP software anda PC running Windows 2000 or XP The FLIP software can be downloaded from Pyramid s web site www pyramidcomm com support Warning Do not attempt to re flash the SVR P250 uP unless you are familiar with operation of the SVR P250 and reasonably competent using Windows software If the uP is not programmed correctly it can render the SVR P250 inoperable Install the software onto your PC the download will include several config cfg and hex data hex files Ensure these are copied into the Program Files Atmel directory on your computer Perform the flash programming in the EXACT steps as outlined below Prior to starting the FLIP software disassemble the SVR P250 by removing the 2 cap screws on the front panel Disconnect the front panel from the main PCB by unplugging the 2 cables Remove the 2 cap screws from the rear panel and carefully slide the entire assembly out of the extrusion Reconnect the front panel to the main PCB Connect the r
24. proper operation Priority sampling is in effect for Analog Channels Only Sampling Rate If Priority sampling is enabled this selects the sampling interval Range is 0 25 seconds to 2 5 seconds in 25 sec increments The higher this setting the longer the handheld operator must wait before speaking after pressing PTT during base to portable sampling Time Out Timer This is the maximum duration of a single base to portable transmission that will be allowed Emergency Format Emg Out Only will assert pin 10 of the main connector for as long as secondary tone is decoded Emg Out with voice will assert pin 10 but also repeat portable to base mode Priority Format The SVR P250 has an enhanced signalling format to determine if the priority vehicle has left the scene during idle time Select SVR 200 legacy to turn off this feature Both formats are fully SVR 200 compatible Page 13 SVR P250 Service Manual Channel Data c Note The number of channels available is determined by the setting in Common Data Tx and Rx Frequency Enter the Transmit and Receive frequencies for each channel The frequency must be in the range for the band selected under Common Data and will be rounded to the nearest channel step Squelch Type Select either CTCSS or DCS NAC for P25 These can be selected on a per channel basis but cannot be mixed within a channel Rx Code The primary tone code when received will put the SVR P250 into portable to base repeat m
25. ransmitting or if other repeaters are transmitting In Analog mode the handhelds must transmit CTCSS but should be carrier squelch receive The handhelds should not use CTCSS decode if the repeater is utilizing the multi vehicle format as this will interfere with the priority sampling which is essential for multi vehicle operation Also the handhelds would have to have different encode and decode tones in order for the repeater to be able to tell the difference between handhelds and other repeaters so the handhelds would not be able to hear each other The repeaters should not transmit CTCSS unless used only in a single vehicle environment lt gt Important Note P25 Operation In P25 mode the SVR P250 must also operate on simplex frequenices The handhelds must transmit a different NAC code than the SVR P250 transmit NAC code and the Handheld Receive NAC code must be F7Eh all call in order to hear the other handhelds and the SVR P250 s which transmit different NAC codes for different functions When the user leaves the vehicle they activate the SVR P250 via their mobile radio front panel or a separate switch When the mobile radio is receiving carrier and proper tone the SVR P250 will begin transmitting on the handheld s receive frequency The user is able to hear and respond to all radio traffic including other handhelds at the site In analog mode the SVR P250 can be programmed to give the handhelds priority in a conversation by periodi
26. rk ina similar way for use with the MSV mobile satellite phones except the time delays are extended to work properly within the network Emergency Operation P25 mode Only The SVR P250 can be programmed for Emergency operation ona per channel basis If enabled the SVR P250 can detect an Emergency NAC code as well as portable to base NAC code The Emergency NAC code is used to indicate an Emergency condition from the portable and will assert an output pin when decoded There are 2 different Emergency formats Emg output only or Emg output with voice repeat Emg output only will assert pin 10 onthe main cable for as long as the Emergency NAC code is being received itis used as amomentary output to the mobile to initiate an Emergency sequence This is the most common configuration with Motorola or MA Com radios Emg output with voice repeat will assert pin 10 as before but will also key the mobile and repeat portable to base as long as the Emergency NAC code is being received This format is used with the Tait mobiles Additionally there is a solder jumper on the main logic PCB that determines if the Emg output signal pulls to ground NO or breaks ground NC Wide Band Narrow Band Channels Analog Mode Only The SVR P250 can be programmed for Wide Narrow band operation on a per channel basis Wide band operation is 25kHz for UHF and 800 MHz 30kHz for VHF Narrow band is 12 5kHz for UHF and 800 MHz 15kHz for VHF In addition to changing the r
27. te enable line blue J9 Adds a pull up resistor 10K to 5SVDC to mobile COR line violet J10 Connects the front panel on off control to the remote enable line to enable the SVR P250 from the front panel J11 Adds Out or removes In a 100KOhm resistor in series with the Tx audio line for applications with low level mic audio and alternator whine problems see Service Bulletin 113 J13 Selects the Emergency output polarity NO pull to ground during Emg NC break ground during Emg Make the connections between the mobile radio and the SVR P250 cable as follows Pin 1 Ground Connect to the radio s chassis or ground plane Black Shield Pin 2 Mobile transmit audio Connect to the mobile transmit audio path or tone input If connected to the White mobile mic input ensure that the SVR P250 is programmed for flat common data If connected after pre emphasis ensure that the SVR P250 transmit audio path is programmed for pre emphasis Pin 2 is AC coupled and has an output impedance of 600 or 2 2Kohms determined by J2 RV3 sets the transmit audio output level and J1 sets the adjustment range between 0 5VPP J1 open or 0 100mVPP J1 shorted Remote enable disable Connect to the radio s auxiliary output or a separate switch to remotely enable or disable the repeater If this line goes high to activate the repeater ensure that JP 1 is set to the position Ifthis line goes to ground set JP1 to the position J8 has two posi
28. tion program the mobile COR line as active high common data Ifthe line goes more negative during an unmute condition program the mobile COR line as active low The input from pin 7 is high impedance and does not have to go rail to rail The SVR P250 uses a voltage comparator as a COR threshold detector and is factory set at 1 6 VDC The COR input must go at least 0 5 VDC on either side of this threshold Local mic audio If programmed for local mic repeat the SVR P250 will go into transmit mode and repeat the audio from this line whenever the mobile radio is keyed by the local mic Connect this line to the mobile transmitter audio path before limiting or filtering This input is AC coupled and high impedance gt 5 6Kohms The input level at this pin should be 300mV to 5VPP RV2 sets the local mic sensitivity If the mic high line has sufficient drive for this input install J4 and leave pin 8 unconnected J6 sets the gain of the local mic input amp If open the maximum gain is one if installed the maximum gain is 10 On Air detect Trunking Connect to a point in the radio that indicates the mobile transmitter is actually on the air This is not the same as mic PTT If pin 9 goes positive during transmit program the on air detect line for active high common data If pin 9 goes to ground during transmit program the on air detect line for active low Conventional Used for local mic repeat indication from the mobile Connect pin 9 to pin
29. tions to add a pull up or pull down resistor to this line if used with an open collector or dry contact output J10 connects this line to the front panel on off control Page 8 Pin 4 Green Pin 5 Red Pin 6 Yellow Pin 7 Violet Pin 8 Brown Pin 10 Black White SVR P250 Service Manual Mobile PTT output Connectto mic PTT on the mobile radio or a line that goes active low to transmit Pin 4 is an open drain output rated at 2A at 15VDC 12 VDC input Connect to the radios 12V switched supply or a point capable of supplying at least 2A of current Mobile receive audio Connect this line to the mobile receive audio path before the volume control If pin 6 is connected to the mobile discrimminator ensure that the SVR P250 receive path is programmed for de emphasis common data If connected after de emphasis program the receive path for flat Pin 6 is AC coupled and high impedance gt 15 ohm RV5 sets the receive audio level sensitivity this input should be between 30mVPP and 5VPP J7 sets the gain of the receive input amp If open the input has a maximum gain of one if installed the input has a maximum gain of 7 Mobile COR detect This line is used to indicate when the SVR P250 should repeat the transmission to the handheld Connect to a logic point in the radio that indicates proper tone and carrier have been detected or the audio unmute line Ifthis line goes more positive during an unmute condi
30. turer s tuning instructions Additionally ensure that the SVR P250 jumpers are properly configured for use with the particular mobile radio that it will be connected to Controls the maximum drive level of the transmit audio output to the mobile radio If J1 is installed output amp U1A will have an adjustment range of 0 100 mVPP IfJ1 is removed U1A can be adjusted between 0 5VPP Controls the output impedance ofthe transmit audio line to the mobile radio If connected to a low impedance pointin the mobile installing JP2 sets the output impedance to 600 ohms If JP2 is open the output impedance is 2 2Kohms Install the jumper for radios that require a lot of modulation drive or that have low impedance microphone circuits Remove the jumper if the SVR P250 installation decreases local microphone audio at the mobile Used to internally tie the local mic input of the SVR P250 to the transmit audio output line which is usually connected to the mic hi line in the mobile Used to internally tie the on air detect input of the SVR P250 to the PTT output Do so only on conventional radios trunking radios must have the on air detect line connected to a line indicating that the radio is transmitting J6 Changes the maximum gain of the local mic input amp from unity Out to 10x In J7 Changes the maximum gain of the receive audio line input from unity Out to 7x In J8 Adds a pull up position or pull down position resistor to the remo
31. uFd chip capacitor 1010 02 5104 C31 34 C37 C40 C6 C20 C22 100uFd elctrolytic cap 1400 08 7107 OTROS EE 2 20 Fd tantalum chip capacitor 1610 04 6225 5pFd chip capacitor 1010 02 5509 CIECIA CALCA 5 ipo 2 2u Fd tantalum chip capacitor 1610 05 6474 22uFd tantalum chip capacitor 1610 05 6226 2200pFd chip capacitor 1010 02 5222 C23 C35 1000pFd chip capacitor 1010 02 5102 GZ CI sted UE O1uFd chip capacitor 1010 02 5103 100pFd chip capacitor 1010 02 5101 3300pFd chip capacitor 1010 02 5332 BAV99 dual diode SOT23 3110 01 0099 2A SMT Pica fuse 2610 04 0020 BM THEE 0 1 3 position vertical header 7300 53 0103 0 1 2 position vertical header 7300 53 0102 DB 15 right angle PCB 7400 00 0012 PD o H 3 5mm RA speaker jack 7401 02 0051 5 circuit RA header 7301 04 0105 2 x 9 vertical header 0 1 7300 15 0209 6 circuit RA header 7301 04 0106 RJ11 programming jack 7401 04 0011 MCX RF connector 7400 00 0005 TNC RA bulkhead connector 7401 02 0007 2N4401 NPN transistor SOT23 3010 01 4401 IRF 5305 P Ch MOSFET TO251 3300 26 5305 N Ch MOSFET TSOP6 3310 01 1902 Dual NPN transistor TSOP6 3010 03 4210 P Ch JFET SOT23 3310 01 0175 200K 3mm SMT pot 2030 08 8204 100K 3mm SMT pot 2030 08 8 104 10K 3mm SMT pot 2030 08 8103 R1 R3 R5 R7 R9 R42 R44 R47 R56 R65 R68 22K chip resistor 2010 02 5223 R69 R71 R72 R77 R4 R15 R16 R29 R30 32 R63 R64 2 2K chip resistor 2010 02 5222 R
32. units will sense the new priority repeater and cease counting down preserving the priority hierarchy If another unit were to arrive from a different scene and it is still the active priority there will be two active repeaters on the air when a condition to repeat exists When one of the SVR P250s unkeys to check for handheld activity analog mode only it will detect the presence of the other active SVR P250 and increment its priority counter and cease transmission This is the self clearing mode to prevent radio collisions ESP Priority The SVR P250 Enhanced Sensor Priority works similar to the SVR 200 and PAC RT formats and is completely backward compatible with those systems The SVR P250 determines if there is a priority and re establishes the priority if missing during idle time between conversations rather than at the critical start of a conversation When a condition to repeat exists the SVR P250 is always ready The priority SVR P250 will transmit a short tone burst every 10 seconds This serves 2 purposes It informs the handheld operator that they are still within range of the vehicle and it alerts the non priority units that a priority vehicle is still on scene As long as the non priority units hear this beacon every 10 seconds they preserve their counts and maintain the priority hierarchy If the priority vehicle leaves the scene after 10 seconds the non priority vehicles will not hear the beacon and begin counting down W
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