DOWNLOAD 12-62 POCSAG Paging Transmitter Product
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1. better than 1 8 1 External indicators consist of a power indicator GREEN LED normally flashing ON once per second to indicate healthy microcontroller operation Sea Air and Land Communications Ltd Page 2 12 62 SYNTHESIZED NRZ TRANSMITTER USER S MANUAL Issue 1262UG 1011 After a debounce period the green LED will flash rapidly if the low supply detector is activated The RED LED will indicate when the unit is transmitting A flashing RED LED indicates the unit cannot transmit as either the synthesiser is out of lock the 12 62 is critically hot or an internal fault has been detected 2 and S10 Connections 2 Connections 10 Connections PTT OUT 50mA max GROUND Discrete Input 4 Discrete Input 3 iscrete Input 2 Discrete Input 1 PTT Input for NRZ operation Modulation Input for NRZ operation TRANSMIT POWER S8 10 RJ45 S2 Rna USB INPUTS SERIAL OUTPUTS 6 0 OPERATION The 12 62 can transmit 3 types of POCSAG message with any one of 4 function levels Alphanumeric transmissions Message can contain any alphanumeric ASCII character Numeric transmissions Message contains only Numeric characters and some symbols Tone Only transmissions Alphanumeric or numeric with no message Sea Air and Land Communications Ltd Page 3 12 62 SYNTHESIZED NRZ TRANSMITTER USER S MANUAL Issue 1262UG 1011 6 1 Alphanumeric transmissions Messages can contain any alphanumeric character The 12 62 wil2. watchdog also optionally allows the transmission of the current state of selected inputs including supply level 7 4 Using the RS232 Serial Commands Serial commands can be manually issued to an 12 62 using a terminal program such as PROCOMM or Hyper terminal Tone only numeric and alphanumeric pagers can be called using serial commands These commands will be processed in parallel with other inputs actions for transmission Some basic commands are described in section 8 0 Sea Air and Land Communications Ltd Page 4 12 62 SYNTHESIZED NRZ TRANSMITTER USER S MANUAL Issue 1262UG 1011 Salcom protocol takes the basic form PPXXXXXXXsLSMMMMMM lt CR gt Where P is either CA 512 baud alpha CN 512 baud numeric ca 1200 baud alpha or cn 1200 baud numeric x is a 7 digit RIC code s is a space L is a digit 1 to 4 beep level M is the message payload up to 240 characters lt CR gt is a carriage return enter key CA Usage CA lt pager gt lt space gt lt level gt lt space gt lt message gt lt CR gt Description Call alphanumeric pager Example CA1119358 1 Please return to reception lt CR gt Response CA11193581 lt CR gt lt SPACE gt Page Sent lt CR gt lt LF gt CN Usage CN lt pager gt lt space gt lt level gt lt space gt lt message gt lt CR gt Description Call numeric pager Example CN1119358 1 777 lt CR gt Response CN11193581 lt CR gt lt SPACE gt Page Sent lt CR gt lt LF gt RES Usag
3. is inverted when Internal modulation is selected The Invert Tx Data option is unavailable when external modulation is selected Resend Delay When an input has been configured with a transmission count greater than 1 then the resend delay is the delay in seconds before sending the message again Max On Air When the 12 62 is transmitting this setting controls how long the transmitter may be continuously on air When this period of has been exceeded the transmitter ceases transmission and will remain off air for the duration defined by the Min OFF Air setting This setting has no effect when external modulation has been selected Sea Air and Land Communications Ltd Page 9 12 62 SYNTHESIZED NRZ TRANSMITTER USER S MANUAL 10 6 10 7 Issue 1262UG 1011 Min Off Air When the 12 62 has exceeded the max on air continuous transmission time the Min OFF Air setting controls how long the transmitter will remain powered down before allowing transmission to continue Lead In The lead in defines how long the transmitter carrier will be present before data transmission commences Lead Out The lead out time controls how long the transmitter will remain on air after data transmission has finished Frequency Configures the transmission frequency Note that the selected frequency must be evenly divisible by the channel spacing Channel Spacing Defines the frequency step resolution Unit Power Level The power level to transmit at Note
4. that the power will be reduced when the 12 62 exceeds 70 degrees Deviation How much the selected frequency deviates by when transmitting data Note the custom setting is not to be used unless the 12 62 has been factory set to support this option Modulation If external modulation has been selected then no serial or input controlled messages will be sent data transmission is solely controlled by the PTT and Modulation inputs on connector P2 When internal modulation is selected then the PTT and modulation inputs do not serve any purpose Sent Response Controls the serial response when a page has been transmitted Historically Page Sent would be sent by Salcom products to the serial port to provide a controlling application with feedback that another message may be submitted for transmission Since the 12 62 may queue many messages Page Sent may not describe sufficiently which page has been transmitted Selecting Sent Message will allow feedback to the user which message has been transmitted but may introduce backwards compatibility problems with applications supporting other Salcom products Selecting Custom will allow any user defined response up to 40 characters in length Selecting None will result in no serial feedback on completion of a message transmission PSD Reset Options Selecting Options Reset to Factory Defaults will allow the user to restore the 12 62 to it s original factory state This
5. 12 62 SYNTHESIZED NRZ TRANSMITTER USER S MANUAL Issue 1262UG 1011 salgan TECHNOLOGIES 12 62 POCSAG PAGING TRANSMITTER The 12 62 is a 138 174 MHz VHF or 427 5 475 MHz UHF 4 watt POCSAG paging transmitter with an in built encoder All parameters are programmable such as frequency power output deviation POCSAG or NRZ data transmission 4 The unit can be controlled via a USB port or an RS232 serial interface to provide 2 62 0000 numeric alphanumeric and tone only POCSAG encoding This enables a user to call a pager over 2 000 000 codes append an appropriate priority level 1 of 4 and add Pagi ng Tra nsm itter a numeric or alphanumeric message The 12 62 supports multiple message queuing and will queue up to eight 240 character messages or as many smaller messages that will fit into the available memory buffer up to 80 Pre defined input messages are limited to a maximum length of 40 characters which may be configured using the Salcom programming software Control via the USB or Serial port is achieved using ASCII character commands The unit supports 4 discrete inputs with a different pre programmed message on high and or low transition plus voltage detection messages on the power input The inputs can be configured for a number of options Provision to transmit a message more than once and variable time between transmissions are catered for The USB port or the RS232 serial port can be used to initiate paging tra
6. V l Discrete output PTT Output S10 pin 1 sinks lt 50mA l Case Dimensions 155 x 101 x 30mm l Type Approvals AS NZS4769 EN 300 224 FCC Pt 90 Transmit duty cycle Up to 100 SEA AIR amp LAND COMMUNICATIONS LTD 10 Magdala Place Middleton Christchurch 8024 PO Box 76237 Northwood 8548 Christchurch New Zealand P 03 379 2298 F 03 365 1580 E info salcom co nz Visit us at www salcom co nz Sea Air and Land Communications Ltd Page 11
7. e RES lt CR gt Description Reset 12 62 microcontroller Example RES lt CR gt Response SALCOM 12 62 0000 VX XX lt CR gt lt LF gt SN Usage SN lt CR gt Description Retrieve unit serial number and firmware revision Example SN lt CR gt Response SALCOM 12 62 0000 VX XX 5122345 lt CR gt lt LF gt 8 1 Error Codes Reports ER1 SYNTAX You entered an invalid command ER3 OPERND You entered a valid command with invalid values ER6 BUSY 12 62 is too busy to process the entered command try again later ER7 OVERTEMP 12 62 is critically hot transmission not possible until cooler Sea Air and Land Communications Ltd Page 5 12 62 SYNTHESIZED NRZ TRANSMITTER USER S MANUAL Issue 1262UG 1011 9 0 TROUBLE SHOOTING The following table may help in problem solving where necessary No illumination of Green LED Input activated but no transmission Unit transmits but nothing received No RS232 serial communication Bad power supply connection PSD configuration incorrect Poor aerial Wrong frequency RIC baud rate Power too low Unit too hot Too much vibration Comport connections baud rate 9600 no parity eight data bits one stop bit Red LED flashes rapidly VCO out of lock unit too hot or internal fault detected Connecting a serial lead to the 12 62 will allow the nature of the fault condition to be determined Green led flashes rapidly Low supply detector threshold Unit starts but does not complete Poor
8. ensure that the final installation operates satisfactorily within the relevant regulatory requirements We accept no responsibility for incorrect installation We reserve the right to change products specifications and installation data at any time without notice 4 0 MECHANICAL DESCRIPTION The 12 62 is enclosed in an extruded aluminium box The end plates unscrew and the lid slides off to allow access to the component side of the pcb The complete pcb can then be slid out of the case if required the heatsink relies on a light pressure contact with the case for heat dissipation The case has four holes for mounting the unit The 12 62 must be mounted away from sources of heat damp or vibration 5 0 INSTALLATION The power supply is connected via P1 green power connector to 13 8 Volts and Ground The supply input is protected against reversed connection Radiation Hazard Important To comply with FCC Controlled Occupational Exposure Limits the aerial must be positioned or mounted to operate at least 0 2 metre away from Occupational Staff and 0 5 metre away from the General Public Use only supplied aerial It is recommended to site the aerial a few metres away from the 12 62 to avoid the possibility of RF feedback causing problems with the transmitter operation An outside aerial is preferable and will provide better radio coverage The aerial connection is via the BNC connector and should present a nominal load of 50 Q with a VSWR of
9. he following 1 Press connect The status at the bottom of the 12 62 PSD will indicate if successfully connected 2 Press the read button or load a PSD configuration file This will load all settings of the 12 62 which is required before any changes can be programmed The 12 62 PSD will provide feedback if the user selected operations are successful Using the Programming Software The 12 62 PSD allows the user to configure the following characteristics gt Input actions watchdog low supply detector and POCSAG transmission settings gt Pre defined messages gt RF frequency and output power gt 99 pager numbers for use with the Salcom 12 36 telephone interface Once the program is running the opening screen appears Use the mouse to select the configuration fields for each feature 12 6 PSD lt Disconnected gt File Options Help Law Input 1 J High Input 1 l Pager Type Alpha Numeric Beepleve 1 Beep level i RIC code 1234567 RiCcode 1234567 Message Message Transmission gt Transmission count 1 e count T Enabled Enabled Resend with Watchdog Hoye Resend with Watchdog Curent x Sea Air and Land Communications Ltd Page 7 12 62 SYNTHESIZED NRZ TRANSMITTER USER S MANUAL 10 4 10 5 Issue 1262UG 1011 PSD Input Configuration All inputs may be configured in a similar fashion including supply voltage monitoring The input drop dow
10. l accept the standard ASCII 7 bit character set 6 2 Numeric transmissions Messages can contain numeric characters and some symbols These can convey a telephone number or other numerically coded information The transmitted message is shorter and therefore there is a smaller chance of errors received by the pager The numeric character set is as follows 0123456789 U lt space gt 6 3 Tone Only transmissions Any numeric or alphanumeric paging message without an actual text message is also considered Tone Only A function level will control the number of beeps on the receiver four different function levels can be sent There are four ways of initiating a paging message transmission 1 Using the external discrete inputs action 2 Supply detector threshold action 3 Watchdog action 4 RS232 Serial commands An action is defined as a paging message RIC Receiver Identification Code or capcode and flags Flags are discussed in the PSD product support disk section 7 1 External Discrete Inputs An action can be initiated from the 4 external inputs with an input transition to LOW connection to GND and or HIGH input floating or connection to gt 3 5v 7 2 Low supply message After a debounce period the low supply detector can initiate an action for both supply going high and supply going low conditions 7 3 Watchdog The watchdog feature will initiate an action after a predetermined period The
11. n box provides support for the 4 inputs available on S10 The battery input is at the very bottom of the input list Each input may have a message defined for both a high and low state Input parameters may be configured as follows Pager type Numeric or Alpha numeric Tone only pagers are supported by ensuring that the message field is left blank Beep Level Page beep levels 1 4 RIC Code Pager ID Valid Codes are 0000008 to 2007663 2007672 to 2045055 2045064 to 2097143 0000000 may be used as a drop code This may be used for the watchdog when the watchdog is used but a watchdog message is to be suppressed Message User message up to 40 characters in length Transmission Count How many times that message will be sent if triggered Enabled When selected the configured message will be sent when triggered Resend with Watchdog When the watchdog is enabled the input message will be sent periodically as configured if in the enabled state Initial Input State Input messages are sent when transitioning to the enabled state If on start up Current has been selected the current input state is read so that the input message will not be sent on start up If High is selected the input on startup is assumed to be in the high state so when found to be low if this is the case the transition will result in a message being sent if enabled If Low the opposite will occur the input is assumed to be low o
12. n startup the transition to high resulting in message being transmitted if enabled and the input is in the high state PSD General configuration Selecting Options gt General will display the general configuration screen as shown overleaf The following items may be set here Sea Air and Land Communications Ltd Page 8 12 62 SYNTHESIZED NRZ TRANSMITTER USER S MANUAL Issue 1262UG 1011 Baud Rate Changing this setting will result in all configured input messages to be sent at the selected baud rate 512 or 1200 Baud Note baud rate changes are not applied to serially generated Salcom protocol messages General Settings amp Protocol prem J Modulation Internal O External Baud Rate 512 O 1200 UnitPowerLevet aw Enable 12 36 Support Deviation 4 5kH2 he Input Debounce ms 500 Leadin s 05 Resend Delay s 5 Lead out 01 Max ON Air s 60 Frequency 440 Min OFF Air s 10 y Channel Spacing 125k Invert TX data rE O None Sent Message Custom Page Sent Protocol Allows the serial protocol to be changed Input Debounce The time delay between the input being triggered and the message being sent Enable 12 36 Support Enabling 12 36 support will allow the Salcom 12 36 0000 telephone interface to be configured Configuration options will become available through the options tab refer to 10 7 PSD 12 36 Support Invert Tx data Internally generated data
13. nsmissions using the SALCOM propriety protocol Paging Entry Protocol PET or Telocator Alphanumeric Protocol TAP PG1 protocol These ports can be used concurrently making it possible to connect a telephone interface unit and still initiate paging transmissions via the USB port PRODUCT INFORMATION Over temperature cutout If the transmitter operates for extended periods in a hot environment a protective thermal cutout may operate to reduce the output power to a safe level It will reset when the unit temperature has fallen to below 70 deg Transmitter Duty cycle The transmitter duty cycle is rated as 50 with a max on time of 5 minutes Higher duty cycles may be possible Contact Salcom for advice Sea Air and Land Communications Ltd PO Box 76237 10 Magdala Place Christchurch New Zealand Sea Air and Land Communications Ltd Page 1 12 62 SYNTHESIZED NRZ TRANSMITTER USER S MANUAL Issue 1262UG 1011 2 0 WARRANTY Our Products are warranted for a period of 12 months from date of purchase against faulty materials and workmanship Should any fault occur the unit should be returned to the vendor freight pre paid Please include a description of the fault to assist with prompt return Any unauthorized alterations or repairs will invalidate the warranty 3 0 DISCLAIMER All information provided in this document is carefully prepared and offered in good faith as a guide in the installation and use of the 12 62 Installers must
14. option will not affect any factory calibrated settings PSD Configuration files The current 12 62 configuration can be saved using File Save Previously saved configuration files can be loaded and edited with or without a 12 62 connected Sea Air and Land Communications Ltd Page 10 12 62 SYNTHESIZED NRZ TRANSMITTER USER S MANUAL Issue 1262UG 1011 10 7 PSD 12 36 Support To use the 12 62 with the Salcom 12 36 telephone interface Salcom protocol must be selected Once selected 12 36 support can be enabled by selecting Options gt General gt Enable 12 36 support When enabled the Preset Messages and Pager Database pages will be available under Options gt 12 36 Support Power Supply 11 5 V to 15 2 V nom 13 8 V RF Frequency VHF 136 174MHz UHF 427 5 475 MHz Switching Range Full 47 5MHz with no tuning Channel Spacing 12 5 KHz or 25 KHz Output Power 7 settings 50mW to 4W 1 dB 50Q Input Current Standby 40 mA Transmit 1 2A approx Modulation Carrier FSK with NRZ data Deviation 2 25kHz or 4 5kHz Baud rate 512 1200 Baud Message format POCSAG Spurious Outputs 37dBm or less Serial input output S2 pins 5 6 RS 232 DCE 9600 baud no parity 8 data bits 1 stop bit l Serial paging command protocols SALCOM proprietary PET On Request Discrete inputs S10 pins 3 6 ground to activate Pulled up to 12v 47K Other Inputs PTT on S10 pin 7 ground to activate External Modulation on S10 pin 1 0 5V 1
15. supply volts RF interference transmission 10 0 PROGRAMMING 10 1 10 2 Installing the VCP USB Driver To use the USB port to communicate with the 12 62 a Virtual Com Port driver must be installed on the PC To install the Silicon Laboratories USB driver run the driver installer CP210x_VCP_Win2K_XP_S2K3 exe provided on the supplied PSD CD and follow the on screen instructions Once the driver is installed an additional COM port will be available via the Salcom PSD programming software VCP USB driver updates are provided periodically by Silicon Laboratories and may be downloaded free of charge from https www silabs com support Preparations for Connecting the Programming Software To change the field programmable options the unit must be connected to a PC running the 12 62 PSD programming software in Windows XP via either the preferred USB port S8 using the supplied USB mini cable or the standard serial port S2 To use the USB connector the supplied virtual COM port USB driver must be installed Note To make up a serial cable the S2 connections are shown on page 3 Alternatively purchase an optional Salcom serial programming cable Sea Air and Land Communications Ltd Page 6 12 62 SYNTHESIZED NRZ TRANSMITTER USER S MANUAL 10 3 Issue 1262UG 1011 The 12 62 must be powered during programming 13 8V to power terminals Ensure that the 12 62 PSD has the correct com port selected Once correctly configured perform t
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