Triplett Railroad Testers 2000 Series
Contents
1. All DC functions indicate upscale A red NEG indicator lights for inputs of nega tive polarity For zero input the NEG indicator is off Page 35 6 1 5 6 1 6 AC Voltage Ranges Accuracy Sensitivity Overload AC Amps Ranges Accuracy Burden Volts Overload 1 5 3 15 150 300 and 600 VAC 3 0 of full scale Oto 50 C 3 5 of full scale 40 to 85 C 288 ohms per volt Continuous 20 VRMS or 5 times full scale whichever is greater not to exceed 700 VRMS Ten seconds 30 VRMS or 10 times full scale whichever is greater not to exceed 700 VRMS 1 5 6 and 30 Amps AC 1 5 of full scale Oto 50 C 2 0 of full scale 40 to 85 C 60 mV nominal at full scale Leads add 34 milliohms typical resistance Fuse in 1 5 Amp range adds 30 milliohms typical resistance For the 1 5 Amp range the fuse blows before damage The 6 Amp and 30 Amp ranges are unfused but can withstand a 50 amp overload for 30 seconds Page 36 6 1 7 Common AC Specifications Calibration Average responding RMS calibrated Freq Response 25 Hz to 400 Hz for rated accuracy 60 Hz Filter 100 Hz Filter 200 Hz Filter 250 Hz Filter 57 Hz to 63 Hz 1 5 additional level error 25 Hz gt 40 dB 99 0 suppression 96 Hz gt 40 dB 99 0 suppression 92 Hz to 100 Hz 1 5 additional level error 60 Hz gt 34 dB 98 0 suppression 120 Hz gt 20 dB 90 0 suppression 156 Hz gt 47 dB 99 6 supp2. contact closure Open zero 3 0 of full scale Closed full scale 0 5 Range 0 to 100 2 of full scale from 10 to 100 Zero offset 3 0 of full scale max Range 30 to 500 cycles per minute 3 of scale length Pointer will deflect to full scale and remain there with a 2 0 millisecond or longer contact closure Allowable Contact Resistance Test Voltage Test Current Overload 0 to 100 ohms 7 5 to 15 VDC The VOM jack is positive with respect to the COM jack 830 uA max Continuous 50 VRMS Ten seconds 120 VRMS Page 41 6 1 11 6 1 12 Power Requirements Batteries Expected Life Cutoff Voltage Sleep Timer Two 9 volt alkaline batteries NEDA 1604 One 1 5 volt alkaline D cell NEDA 13F Normal operation 320 hours Sleep mode 2000 hours 10 5 volts minimum for both 9V batteries in series The ohmmeter circuit is designed to properly zero with a D cell battery from 1 0 to 1 8 volts Test set falls asleep after 3 to 7 minutes with no meter deflection greater than 1 of full scale typical Meter Movement Full scale 100 uA 1 Balance 1 0 of full scale Construction Taut band construction shock mounted 100 degree deflection critically damped Mirrored High strength magnet Page 42 6 2 Physical Specifications Size 5 0 wide x 6 5 high x 3 2 deep Weight Approximately 2 75 pounds 4 75 pounds with case and leads Moisture Resistance Test Set i
3. left blank Page 31 5 5 Measuring Dry Contacts 5 5 1 Referto Section 3 0 Preparation For Use and Section 4 0 General Operation before attempting any measurements 5 5 2 Set the Code Function Switch to the NORM position The position of the Signal Select Switch does not matter 5 5 3 Attach the test leads to the Test Set The red lead is con nected to the VOM Jack and the black lead is connected to the COM Jack 5 5 4 Connect the test leads across the contacts to be measured 5 5 5 The Pointer will be in one of two positions If the contacts are open then the Pointer will rest on the left side of the dial by the OHMS scale infinity mark If the contacts are closed then the Pointer will deflect to full scale and rest on the Ohms Zero Mark The Pointer will thus follow contact closure Note The pointer does not indicate resistance of the contacts 5 5 6 If code timing parameters are to be measured select the desired parameter using the Code Function Switch Refer to Sec tion 2 1 for a description of these functions Rate is read using the black CODE RATE scale On Time is read using the black percent age scale 5 5 7 The Peak Hold and Peak Follow functions behave differ ently in the Dry Contact range than the other ranges In the Dry Contact range Peak Hold and Peak Follow both will detect and hold a momentary contact closure When a momentary closure is detected the Pointer will deflect to full scale and remain th
4. the measurement circuitry is automatically reset and made ready for the new measurement 2 1 1 Peak Hold This function will capture and hold the peak level of the signal If the peak level of the signal is varying slightly the Test Set will average 25 of these readings to give an average peak level For DC func tions the polarity of the peak is also captured and displayed using the NEG Indicator For the Dry Contact Range Peak Hold will cap ture and hold a momentary contact closure CAUTION The 2000 Series Type 3 will continue to read out the averaged value of the last captured measurements even after the signal has been removed The value will continue to be read out until a new signal is captured or the Test Set is reset by changing the setting of the Code Function switch or the Range switch Page 8 2 1 2 Peak Follow This function is similar to Peak Hold except the peak measurement will follow the peak level automatically even if it is decreasing This permits easier adjustment of peak levels No averaging is performed so if the peak level is varying the Pointer will follow it WARNING The 2000 Series Type 3 will continue to read out the value of the last captured measurement even after the signal has been removed The value will continue to be read out until a new signal is captured or the Test Set is reset by changing the setting of the Code Function switch or the Range switch 2 1 3 Rate This function
5. the same time 3 7 2 3 Place the 9V batteries into the holders making sure that the white insulator covers them Page 18 3 7 3 Fuse Replacement 3 7 3 1 Locate the two fuses on the Input Scaling Board BD200 3 7 3 2 Using a small flat blade screwdriver gently lift the installed fuse from its clips Be careful so as not to bend the fuse clips 3 7 3 3 Install a new fuse of the proper type See Section 7 4 for the correct type Be certain that the fuse is securely seated in the fuse clips 3 7 4 Case Back Installation Re install the case back being careful not to pinch any wires Tighten the thumb screw finger tight Page 19 4 0 GENERAL OPERATION 4 1 This section describes general operation of the Test Set When making measurements of any type refer to this section THE MODEL 2000 SERIES RAILROAD TEST SETS ARE INTENDED FOR USE ONLY BY PERSONNEL TRAINED IN THE PROPER SAFETY PROCEDURES AND WHO CAN RECOGNIZE SHOCK AND SAFETY HAZARDS Always prepare the Test Set for use by reading and following the Preparation for Use section of this manual Section 3 0 4 2 High Voltage Measurements CAUTION Always observe the following rules and procedures when making measurements in high voltage circuits 4 2 1 Turn the equipment or voltage source off before connect ing the test leads Make certain that no capacitors in the circuit be ing tested remain charged to a high voltage 4 2 2 Setthe Test Set to the appropriate AC or DC Vol
6. use cracked or broken test leads High Voltage Is Dangerous Always start with the power off Be sure there is no voltage present before making connections to the circuit Don t touch the tester its leads or any part of the circuit while it is on Before disconnecting the tester turn the circuit off and wait for the meter to return to zero Distribution Circuits Pack a Punch In high energy circuits such as distribution transformers and bus bars dangerous arcs of explosive nature can occur if the circuit is shorted If the tester is connected across a high energy circuit when set to a low resistance range a current range or any other low im pedance range the circuit is virtually shorted Special equipment designed for use with these circuits is available Contact a qualified person for assistance before attempting to make measurements on any high energy circuit Safety Is No Accident Note Specifications subject to change without notice Page 3 TABLE OF CONTENTS SAFETY RULES 1 0 INTRODUCTION 2 0 PRODUCT FEATURES 2 1 Code Measurements 2 2 The Cab Filters 2 3 Auto Polarity 2 4 Power Supply Features 3 0 PREPARATION FOR USE 3 3 Meter Mechanical Zero 3 4 Visual Inspection of the Test Set 3 5 Visual Inspection of the Test Leads 3 6 Battery and Fuse Test 3 7 Battery and Fuse Replacement Page 4 10 10 10 12 13 14 14 15 18 4 0 5 0 6 0 7 0 8 0 GENERAL OPERATION OPERATION 5 1 M
7. Hz Cab Filters with yellow padded carrying case 2012 Model 2003 60 100 Hz Cab Filters with yellow padded carrying case 2013 Page 46 Parts and Accessories continued Description Part Number Test Leads 14 AWG 79 767 Nine volt alkaline battery 37 48 D cell alkaline battery 37 24 Fuse 1A 250V 8AG Instrument 3207 30 Littelfuse 361001 Bussman AGX 1 Fuse 10A 250V 3AB Normal Blow Ceramic 3207 21 Littelfuse 314010 Bussman ABC 10 Protective Window with screws 13568 Padded carrying case yellow nylon 10 3967 Shoulder strap 3206 74 Tester hold down strap with hooks 3206 77 for 2000 Series 2 required Tester hold down strap with Velcro 3206 76 for other testers Case back assembly 10 3866 Knob range switch 34 266 Knob small 34 270 Seal nut for push button switch 27 213 Instruction Manual 84 873 Page 47 8 0 LIMITED WARRANTY Triplett Jewell Instruments warrants instruments and test equipment manufactured by it to be free from defective material or workmanship and agrees to repair or replace such products which under normal use and service disclose the defect to be the fault of our manufacturing with no charge within one year of the date of original purchase for parts and labor If we are unable to repair or replace the product we will make a refund of the purchase price Consult the Instruction Manual for instructions regarding the proper use and servicing of instruments and test equipment Our obligation under this
8. TRIPLETT 2000 Series Type 3 Railroad Test Sets InstructionManual Model 2000 Model 2001 Model 2002 Model 2003 84 873 7 07 SAFETY RULES Warning This Tester has been designed with your safety in mind However no design can completely protect against incorrect use Electrical circuits can be dangerous and or lethal when lack of caution or poor safety practices are used Read the Manual Read this Instruction Manual carefully and completely Voltages and currents within the capability of this test equipment can be hazard ous Follow the instructions in this manual for every measurement Read and understand the general instructions before attempting to use this tester Do not exceed the limits of the tester Safety Check Double check the switch setting and lead connections before mak ing measurements Are you following all of the instructions Dis connect the tester or turn off the power before changing switch positions Do not connect to circuits with voltage present when switch is in any ohms or current position When replacing fuses use only specified type fuses and insert in correct fuse holder Page 2 Don t Touch Don t touch exposed wiring connections or other live parts of an electrical circuit If in doubt check the circuit first for voltage before touching it Turn off the power to a circuit before connecting test probes to it Be sure there is no voltage present before you touch the circuit Do not
9. able jumper located on the left of the small circuit board on the bottom of the large main circuit board This is found by removing the four screws holding the RF shield This jumper when in position 1 2 will enable the sleep mode To disable the sleep mode move the jumper to the 2 3 position Page 11 3 0 PREPARATION FOR USE 3 1 Before using the Test Set familiarize yourself with the instrument and this manual READ AND REVIEW THIS MANUAL FREQUENTLY 3 2 Each time the Test Set is used check and if necessary correct the mechanical zero of the meter Refer to Section 3 3 Inspect the Test Set for mechanical defects as described in Section 3 4 Also inspect the test leads as described in Section 3 5 Finally perform the Battery and Fuse Test as described in Section 3 6 Only after all tests have been passed should the Test Set be used DO NOT USE THE TEST SET IF ANY OF THESE TESTS FAIL Page 12 3 3 Meter Mechanical Zero 3 3 1 Place the Test Set on its back on a flat horizontal surface Set the Range Switch to the OFF position 3 3 2 Examine the position of the Pointer on the Dial If it is ex actly on the Zero Mark then the meter is mechanically zeroed and no adjustment is necessary 3 3 3 If the Pointer is not exactly aligned with the Zero Mark then the mechanical zero of the meter needs adjustment This is done by using a small flat blade screwdriver to adjust the Zero Ad just Screw Slowly turn the Zero Adjust Screw
10. cale On time is read using the black percentage scale Code parameters may be read on any range provided that the peak level is approximately ten percent of full scale 5 1 7 Disconnect the test leads from the circuit under test and return the Range Switch to the OFF position Page 23 5 2 Measuring DC milliAmps 5 2 1 Refer to Section 3 0 Preparation For Use and Section 4 0 General Operation before attempting any measurements 5 2 2 Select the desired DC mA range by rotating the Range Switch to the desired position Place the Code Function Switch in the NORM position The position of the Signal Select Switch has no effect in this mode 5 2 3 Attach the test leads to the Test Set The red lead is con nected to the VOM Jack and the black lead is connected to the COM Jack 5 2 4 Connect the test leads in series with the circuit to be mea sured 5 2 5 Read the current on the appropriate scale as noted in the table on the following page If the NEG Indicator lights then the input current is reversed from the polarity of leads Range Leads Read Multiply Switch Red Black Scale Divide Direct 15 mADC VOM COM 0 15 Direct reading 60 mADC VOM COM 0 60 Direct reading 300 mADC VOM COM 0 300 Direct reading Page 24 5 2 6 If code parameters are to be measured select the desired parameter using the Code Function Switch Refer to Section 2 1 for a description of these functions Peak levels are measured using the same
11. cessary 3 6 1 9V Battery Test Place the Test Set Range Switch in the OFF position Depress and hold the Push Eor Ohms Switch The Pointer will deflect upscale and the red NEG Indicator will light If the Pointer fails to deflect into the blue BATT OK scale then both 9V batteries must be replaced Replace the batteries if necessary then repeat this test Proceed to the Fuse Test Section 3 6 2 only after successfully passing this test 3 6 2 Fuse Test The Test Set contains two fuses Both must be tested and found good for safe operation of the instrument Page 15 3 6 2 1 VOM Fuse Test Place the Test Set Range Switch in the DRY CONTACT position Place the Code Function switch in the NORM position Connect the test leads to the instrument The red lead is attached to the VOM Jack and the black lead to the COM Jack Short the leads and the Pointer must deflect to full scale If it fails to do so fuse F201 1A 250V 8AG must be replaced Paragraph 3 7 3 Replace this fuse if necessary then repeat this test Proceed to the 1 5 AMP Fuse Test Paragraph 3 6 2 2 only after successfully passing this test 3 6 2 2 1 5 AMP Range Fuse Test While the Test Set is still set as in Paragraph 3 6 2 1 move the black test lead from the COM Jack to the 1 5 AMP Jack Short the leads and the Pointer must deflect to full scale If it fails to do so fuse F202 10A 250V 3AB must be replaced Paragraph 3 7 3 Re place this fuse if necessary then
12. clockwise until the Pointer is approaching the Zero Mark from below zero When the Pointer is resting on the Zero Mark reverse the Zero Adjust Screw one eighth turn This will disengage it and reduce the effect that temperature shock and vibration will have on the mechanical zero of the meter Page 13 3 4 Visual Inspection of the Test Set Before use inspect the Test Set for any conditions which would make it unsafe Check for missing or loose parts knobs screws or insulators Check also for damage such as cracks chips and burn marks Make certain that the Test Set is free from oils grease dirt and excessive moisture IF ANY OF THESE CONDITIONS ARE FOUND DO NOT USE THE TEST SET 3 5 Visual inspection of the Test Leads Before use inspect the test leads for worn or cut insulation Check also for deterioration of the insulation Make certain that no wire is exposed and that the jack insulators and alligator boots are not cracked broken torn or otherwise damaged Check also for loose or missing parts IF THE TEST LEADS ARE IN ANY WAY DAM AGED OR DEGRADED DO NOT USE THEM THEY MUST BE REPLACED DO NOT USE TEST LEADS THAT HAVE BEEN AL TERED OR ARE NOT A FACTORY APPROVED REPLACEMENT Page 14 3 6 Battery and Fuse Test Before using the Test Set and frequently during use the batteries and fuses in the Test Set should be tested Refer to Section 3 7 for instructions on installing and or replacing the batteries and fuses if ne
13. directly measures the rate of the signal The result is displayed on the CODE RATE scale Only after two readings are taken and found to be close together does the Pointer deflect It may require up to eight seconds for the reading to be updated if the rate changes This reduces the possibility that noise may cause a false rate indication Also the peak signal level must be at least 10 of full scale for the measurement to be made The rate of the highest level signal of either polarity is displayed 2 1 4 On Time This mode is similar to the Rate function except the percentage of time that the signal is on is displayed The on time is read using the scale Nominal Code Rate is 50 duty cycle Page 9 2 2 The Cab Filter If the Test Set has Cab Filters then all AC functions may select one frequency to be measured This is invaluable when multiple cab signals are being sent as it negates the need to turn off one of the cab signals to measure the other one The Signal Select Switch is simply placed in the position indicating the frequency to be mea sured All functions behave the same except that only the signal of interest is measured 2 3 Autopolarity 2 3 1 Auto Polarity For all DC functions the Test Set works in the auto polarity mode The highest level peak of either polarity and its timing parameters will be measured In this mode the Pointer will always deflect up scale with the NEG Indicator lighting for signals of negat
14. easuring AC and DC Voltage 5 2 Measuring DC milliAmps 5 3 Measuring DC and AC Amps 5 4 Measuring Resistance 5 5 Measuring Dry Contacts 5 6 Measuring DC Pulse Code Signals SPECIFICATIONS 6 1 Electrical Specifications 6 2 Physical Specifications ACCESSORIES PARTS AND SERVICE LIMITED WARRANTY Page 5 20 22 22 24 26 28 32 33 34 34 43 1 0 INTRODUCTION 1 1 Package Contents The standard shipping package contains the following items Test Set Test Leads This Instruction Manual Carrying Case with Strap Spare Fuses Two 9V Alkaline Batteries One D cell Alkaline Battery 1 2 Product Description The Model 2000 Series of Railroad Test Sets are specialized VOM s designed for measuring the signal parameters of railroad coding equipment They maintain compatibility with older technologies while at the same time offering functions and features not found on standard VOM s 1 2 1 Easier to Use for Normal Operation Fewer jacks more ranges and a logical layout of the front panel all contribute to the Test Sets ease of use The use of a multi turn Ohms Adjust Control facilitates accurate resistance measurements Also the measurement of relay contact on time requires no adjust ments Page 6 1 2 2 Measurement of Code Parameters The measurement of code parameters has been made simple and accurate No longer is it necessary to count pointer swings to mea sure code rate On time can be measu
15. er deflects then there is a foreign voltage present which would cause errors in the resistance measurement if at tempted The approximate full scale voltage is 15 VDC although AC voltage will also be detected The NEG Indicator will light if the test leads are unconnected or if connected and no voltage or nega tive voltage is present For both positive and negative inputs as well as AC the pointer will deflect upscale 5 4 1 7 If a foreign voltage is detected disconnect the test leads from the circuit under test and refer to Section 5 1 to determine the exact nature of the foreign voltage so that it may be removed 5 4 1 8 If no foreign voltage is present then a resistance measure ment can be made Proceed to Section 5 4 2 5 4 2 Resistance Measuring Mode After determining that there is no foreign voltage present a resistance measurement may be made by depressing and holding the Push For Ohms Switch Page 29 5 4 2 1 Press and hold the Push For Ohms Switch and read the resistance on the red OHMS scale The Ohmmeter must be prop erly zeroed See Paragraph 5 4 1 4 5 4 2 2 Read the resistance on the appropriate scale as noted in the table below Range Leads Read Red Ohms Scale Switch Red Black Multiply Direct Rx1 VOM COM Direct reading Rx 100 VOM COM Multiply by 100 5 4 2 3 Disconnect the test leads from the circuit under test and return the Range Switch to the OFF position Page 30 This page intentionally
16. ere until reset by changing the Code Function Switch or the Range Switch Page 32 There is no difference between Peak Hold and Peak Follow in the Dry Contact range 5 5 8 Disconnect the test leads from the circuit under test and return the Range Switch to the OFF position 5 6 Measuring DC Pulse Code Signals 5 6 1 Overview The DC Amps function has selectable polarity This is useful for measuring the transmit and receive currents in pulse coded track circuits The selection of the polarity is made via the Signal Select Switch In any other DC function DC Volts or DC mA the position of the Signal Select switch has no affect The polarity of pulse coded signals cannot be selected in the DC Volts or DC mA functions 5 6 2 Selecting the Polarity To measure transmit and receive currents see Section 5 3 in the Instruction Manual Place the Signal Select switch in the posi tion for Test Sets without Cab Filters or in the AP position for Test Sets with Cab Filters The peak level and timing parameters of the highest amplitude signal are now automatically measured To select a particular polarity transmit or receive to measure simply change the Signal Select switch to the or the position That Signal will be captured If the signal is of the opposite polarity e g a positive signal when the switch is set to the pointer will deflect down scale On Test Sets with Cab Filters the and positions of the Signal Select sw
17. he signal is of the opposite polarity e g a positive signal when the switch is set to the pointer will deflect down scale On Test Sets with Cab Filters the and positions of the Signal Select switch are also labeled with the Cab frequencies applicable to that Test Set 5 3 3 Attach the test leads to the Test Set The red lead is con nected to the 1 5 Amp Jack to measure 1 5 Amps AC or DC It is connected to the 6 Amp Jack to measure 6 Amps AC or DC and it is connected to the 30 Amp Jack to measure 30 Amps AC or DC Page 26 WARNING THE 6 AMP AND 30 AMP JACKS ARE UNFUSED USE EXTREME CAUTION The black lead is connected to the COM Jack 5 3 4 Connect the test leads in series with the circuit to be mea sured 5 3 5 Read the current on the appropriate scale as noted in the table below If the NEG Indicator lights then the input current is negative Range Leads Read Multiply Switch Red Black Scale Divide Direct DC Amps 1 5A COM 0 15 Divide by 10 DC Amps 6A COM 0 60 Divide by 10 DC Amps 30A COM 0 300 Divide by 10 AC Amps 1 5A COM 0 15 Divide by 10 AC Amps 6A COM 0 60 Divide by 10 AC Amps 30A COM 0 300 Divide by 10 5 3 6 If code parameters are to be measured select the desired parameter using the Code Function Switch Refer to Section 2 1 for a description of these functions Peak levels are measured using the same scales as used in the NORM mode Rate is read using the black CODE RATE scale On Time is
18. itch are also labeled with the Cab frequencies applicable to that Test Set Page 33 6 0 6 1 6 1 1 6 1 2 SPECIFICATIONS Electrical Specifications DC Voltage Ranges Accuracy Sensitivity Overload DC milliAmps Ranges Accuracy Burden Volts Overload 0 6 3 15 60 and 300 VDC 1 5 of full scale Oto 50 C 2 5 of full scale 40 to 85 C 1000 ohms per volt Continuous 20 VRMS or 5 times full scale whichever is greater not to exceed 600 VRMS Ten seconds 30 VRMS or 10 times full scale whichever is greater not to exceed 700 VRMS 15 60 and 300 MADC 1 5 of full scale Oto 50 C 2 0 of full scale 40 to 85 C 60 mV nominal at full scale Leads and fuse add 250 milliohms typical resistance Fuse blows before damage Page 34 6 1 3 6 1 4 DC Amps Ranges Accuracy Burden Volts Overload 1 5 6 and 30 Amps DC 1 5 of full scale Oto 50 C 2 0 of full scale 40 to 85 C 60 mV nominal at full scale Leads add 34 milliohms typical resistance Fuse in 1 5 Amp range adds 30 milliohms typical resistance For the 1 5 Amp range the fuse blows before damage The 6 Amp and 30 Amp ranges are unfused but can withstand a 50 amp overload for 30 seconds Common DC Specifications NMRR Polarity Detect gt 60 dB at 25 Hz Code Function switch in NORM position gt 35 dB at 60 Hz and gt 60 dB at 96 Hz Code Function switch in PEAK or TIMING position
19. ive polar ity The highest level peak of either polarity and its timing param eters will be measured 2 4 Power Supply Features 2 4 1 The Sleep Feature Since the Test Set relies on batteries for operation a battery saving feature has been incorporated to extend the battery life if acciden tally left on This is known as the Sleep mode After approximately five minutes of non use Pointer at less than 1 of scale and no range switch changes the Test Set will power down reducing bat tery drain and extending battery life This mode is indicated by the Pointer deflecting down scale into the Sleep Zone To reactivate the Test Set simply rotate the Range Switch NOTE DURING SLEEP THE TEST SET WILL NOT RESPOND TO ANY INPUT Page 10 2 4 2 Battery Monitor To prevent operation of the Test Set with weak batteries a battery test is performed every time the Range Switch is changed If the batteries are low the Pointer will deflect down scale into the Sleep Zone It will not respond to any input making measurements impos sible This feature prevents low batteries from providing false read ings if they fall below a voltage at which the internal circuitry is de signed to operate reliably Note that even though the Pointer is in the Sleep Zone the Test Set is not in a low current mode After approximately five minutes the Test Set will revert to the battery saving Sleep mode 2 4 3 Sleep Mode Disable The Test Set contains a field change
20. ot allow the exclusion or limitation of incidental or consequential damages so the above limitation or exclusion may not apply to you No representative of Triplett Jewell Instruments or any other person is authorized to extend the liability of Triplett Jewell Instruments in connection with the sale of its products beyond the terms hereof Triplett Jewell Instruments reserves the right to discontinue models at any time or change specifications price or design without notice and without incurring any obligation This warranty gives you specific legal rights and you may have other rights which vary from state to state Page 48
21. read using the black percent age scale Code parameters may be read on any range provided that the peak level is approximately ten percent of full scale Page 27 5 3 7 Disconnect the test leads from the circuit under test and return the Range Switch to the OFF position 5 4 Measuring Resistance 5 4 1 Voltage Sensing Mode Before measuring resistance the circuit to be tested must be checked for a voltage which is present as this may present a safety hazard and or give a false reading This is facilitated through the Ohmmeter s voltage sensing mode 5 4 1 1 Referto Section 3 0 Preparation For Use and Section 4 0 General Operation before attempting any measurements 5 4 1 2 Select the desired Ohms range by rotating the Range Switch to the desired position The position of the Code Function Switch and the Signal Select Switch does not matter 5 4 1 3 Attach the test leads to the Test Set The red lead is con nected to the VOM Jack and the black lead is connected to the COM Jack 5 4 1 4 Zero the Ohmmeter by shorting the test leads together and depressing and holding the Push For Ohms Switch The Pointer will deflect Use the Ohms Adjust Control to set the Pointer on the Ohm meter Zero Mark If this is not possible then the D cell battery needs replacement Refer to Section 3 7 When zeroed release the Push For Ohms Switch Page 28 5 4 1 5 Connect the test leads across the circuit to be measured 5 4 1 6 If the Point
22. red on live signals as well as relay contacts Peak levels can be determined quickly and auto matically Adjustment to the code equipment peak level can also be made without constantly readjusting the Test Set 1 2 3 Expandable Optional circuit boards may be installed to allow for the filtering of 60 Hz 100 Hz 200 Hz or 250 Hz cab signals The base unit may be upgraded at any time to include these filters without loosing the initial investment 1 2 4 Four Models The 2000 Series currently consists of four models The base Model 2000 has all the features mentioned above with the exception of the Cab Filters The Model 2001 includes selectable 100 Hz and 250 Hz Cab Filters The Model 2002 includes selectable 100 Hz and 200 Hz Cab Filters The Model 2003 includes selectable 60 Hz and 100 Hz Cab Filters 1 2 5 Selectable DC Amps Polarity The DC Amps function has selectable polarity This is useful for mea suring the transmit and receive currents in pulse coded track cir cuits Page 7 2 0 PRODUCT FEATURES 2 1 Code Measurements Code parameters may be directly measured with the Test Set These code measurements are active in any AC or DC voltage or current range as well as the Dry Contact function These functions are se lected by placing the Code Function Switch in the desired position The Pointer will momentarily return to zero and then indicate the appropriate reading If the Range Switch or any other switches are changed then
23. repeat this test Proceed to the D cell Battery Test Paragraph 3 6 3 only after successfully passing this test RETURN THE BLACK TEST LEAD TO THE COM JACK FOR ALL NORMAL USE AND OTHER TESTS THE BLACK TEST LEAD MUST BE CONNECTED TO THE COM JACK Page 16 3 6 3 D cell Battery Test Place the Test Set Range Switch in the Rx1 position Short the test leads together they must be in the VOM and COM jacks Depress the Push For Ohms Switch and using the Ohms Adjust Control attempt to set the Pointer to full scale deflection If this is possible then the D cell battery is good If the Pointer cannot be set to full scale then the D cell battery must be replaced Replace this bat tery if necessary then repeat this test Only after successfully pass ing all of the preceding tests is the Test Set ready for use Page 17 3 7 Battery and Fuse Replacement 3 7 1 Case Back Removal 3 7 1 1 Disconnect any test leads connected to the Test Set and place the Range Switch in the OFF position 3 7 1 2 Remove the case back by turning the large thumb screw in the center of the case back counter clockwise 3 7 2 Battery Replacement 3 7 2 1 Remove the D cell and two 9V alkaline batteries under the white insulator if they are installed 3 7 2 2 Install fresh batteries in the clips provided The D cell is oriented with the positive to the small white dot on the meter back The 9V batteries can only be installed one way They must both be replaced at
24. ression 196 Hz to 204 Hz 1 5 additional level error 156 Hz gt 20 dB 90 0 suppression 250 Hz gt 20 dB 90 0 suppression 245 Hz to 255 Hz 1 5 additional level error 156 Hz gt 38 dB 98 7 suppression 200 Hz gt 20 dB 90 0 suppression Page 37 6 1 8 6 1 8 1 Code Measurement Specifications Peak Level Measurements Peak Hold Peak Follow Level Stability Pointer will deflect to the peak level of the input signal For repetitive peaks within a 4 level window 25 samples are averaged then no further updates occur unless the level exceeds the captured peak Pointer will deflect to the peak level that is at least 25 of the previously displayed peak Fora peak to be detected the signal must remain level stable within 4 0 typically for a period of 10 milliseconds AC Rejection for DC Functions AC signals greater than 60 Hz and up to five times the level of the DC signal to be measured will typically introduce less than 3 additional error in the level measurement DC Rejection for AC Functions DC signals up to five times the level of the AC signal to be measured will typically introduce less than 3 additional error in the level measurement Page 38 6 1 8 2 Timing Measurements On Time Accuracy Zero Offset Rate Accuracy Timeout Period Minimum Input Range 0 to 100 3 of full scale from 10 to 100 3 0 of full scale max Range 30 to 500 cycle
25. s not damaged by exposure to rain Temperature Operating and storage 40 to 85 C Humidity 0 95 non condensing Note Specifications subject to change without notice Page 43 7 0 ACCESSORIES PARTS amp SERVICE 7 1 Cleaning the Window Other than battery and fuse replacement cleaning the window is the only service that can be performed by the user This may be done by using a soft cotton cloth dipped in a solution of household detergent and water Wipe the window and allow to dry without rub bing or polishing This will help to maintain the anti static properties so that the pointer does not stick or become erratic Clean both the meter window and the protective window 7 2 Calibration A one year calibration interval is recommended Refer to qualified service personnel Page 44 7 3 Factory Service WARNING DO NOT ATTEMPT TO SERVICE THIS UNIT ANY ATTEMPT TO SERVICE BY AN UNQUALIFIED PERSON MAY BE DANGEROUS AND OR LETHAL AND WILL VOID YOUR WARRANTY To order parts or obtain service contact Service Center Jewell Instruments 850 Perimeter Road Manchester NH 03103 1 800 874 7538 Page 45 7 4 Parts and Accessories The following parts and accessories are available Contact the fac tory for the latest in accessories Description Part Number Model 2000 no Cab Filters with yellow padded carrying case 2010 Model 2001 100 250 Hz Cab Filters with yellow padded carrying case 2011 Model 2002 100 200
26. s per minute 3 of scale length Zones 50 cpm 47 5 to 50 75 cpm 75 cpm 71 0to 77 0 cpm 120 cpm 118 0 to 125 0 cpm 180 cpm 175 9 to 187 2 cpm 270 cpm 263 9 to 276 5 cpm 420 cpm 410 5 to 423 0 cpm 2 to 8 seconds is required for an update on the timing functions Two consecutive readings within 7 of full scale of each other are averaged For correct Rate and On Time measurements a minimum input of 13 of full scale is required The trigger points are automatically set by the software The valley point must be typically 60 or less of the captured peak Page 39 6 1 9 6 1 9 1 6 1 9 2 Ohmmeter Voltage Sense Mode Range Accuracy Sensitivity Overload 15 V DC auto polarity or AC to 1 KHz typical NEG indicator is on for zero and negative inputs 20 40 to 85 C 1000 ohms per volt Continuous 50 VRMS Ten seconds 120 VRMS Resistance Measurement Mode Ranges Center Scale Accuracy Open Circuit Voltage Test Current Overload Rx1andRx100 5 and 500 ohms 2 0 of scale length 0 5 ohms 0 to 50 C 3 0 of scale length 0 5 ohms 40 to 85 C 1 0 to 1 8 VDC The VOM jack is negative with respect to the COM jack Rx 1 range 400 mA max R x 100 range 3 6 mA max R x 1 range fuse blows before damage R x 100 range 35 VRMS continuous Page 40 6 1 10 Dry Contact Functions Normal On Time Accuracy Rate Accuracy Peak Hold Pointer follows
27. scales as used in the NORM mode Rate is read using the black CODE RATE scale On Time is read using the black percent age scale Code parameters may be read on any range provided that the peak level is approximately ten percent of full scale 5 2 7 Disconnect the test leads from the circuit under test and return the Range Switch to the OFF position Page 25 5 3 Measuring DC and AC Amps 5 3 1 Refer to Section 3 0 Preparation For Use and Section 4 0 General Operation before attempting any measurements 5 3 2 Select the desired AC or DC Amps function by rotating the Range Switch to the desired function If measuring AC Amps with a Test Set with Cab Filters set the Sig nal Select Switch to AP to measure all AC current present If only cab signals are of interest then set the Signal Select switch to the appropriate frequency The Test Set will measure only that sig nal If using a Test Set without Cab Filters all AC current present will be measured For DC Amps if it is desired to measure transmit and receive cur rents place the Signal Select switch in the AP position Test Sets with Cab Filters or the Test Sets without Cab Filters posi tion The peak level and timing parameters of the highest amplitude signal are now automatically measured To select a particular polarity transmit or receive to measure sim ply change the Signal Select switch to the or the position That signal will be captured If t
28. st Set will mea sure only that signal A Test Set without Cab Filters will measure all AC voltage present regardless of the setting of the Signal Select Switch In DC Volts the position of the Signal Select Switch has no effect but should be left in the AP or position to avoid mis interpretation 5 1 3 Attach the test leads to the Test Set The red lead is con nected to the VOM Jack and the black lead is connected to the COM Jack 5 1 4 Connect the test leads across the circuit to be measured 5 1 5 Read the voltage on the appropriate scale as noted in the table on the following page If the NEG Indicator lights then the input voltage is reversed from the polarity of leads Page 22 Range Leads Read Multiply Switch Red Black Scale Divide Direct 0 6 VDC VOM COM 0 60 Divide by 100 3 VDC VOM COM 0 300 Divide by 100 15 VDC VOM COM 0 15 Direct reading 60 VDC VOM COM 0 60 Direct reading 300 VDC VOM COM 0 300 Direct reading 1 5 VAC VOM COM 0 15 Divide by 10 3 VAC VOM COM 0 300 Divide by 100 15 VAC VOM COM 0 15 Direct reading 150 VAC VOM COM 0 15 Multiply by 10 300 VAC VOM COM 0 300 Direct reading 600 VAC VOM COM 0 60 Multiply by 10 5 1 6 Ifcode parameters are to be measured select the desired parameter using the Code Function Switch Refer to Section 2 1 for a description of these functions Peak levels are measured using the same scales as used in the NORM mode Rate is read using the black CODE RATE s
29. tage range If not known start with the highest range switch position and then lower the range switch for an appropriate reading Page 20 4 2 3 While holding the insulated boot covering the alligator clip touch the alligator clips to the circuit being tested If no voltage is present connect the alligator clips to the points to be measured If a voltage is found check the equipment to make certain that all power is off and all capacitors are discharged 4 2 4 Turn the equipment or voltage source on and take the re quired reading DO NOT HANDLE OR TOUCH THE TEST SET TEST LEADS OR ALLIGATOR CLIPS WHILE THE EQUIPMENT IS TURNED ON 4 2 5 Turn the power to the equipment off and allow the reading to return to zero before disconnecting the test leads Page 21 5 0 OPERATION 5 1 Measuring AC and DC Voltage 5 1 1 Refer to Section 3 0 Preparation For Use and Section 4 0 General Operation before attempting any measurements 5 1 2 Select the desired AC or DC voltage range by rotating the Range Switch to the desired range If measuring AC voltage with a Test Set with Cab Filters SIGNAL SEL switch will be marked CAB FILTER set the Signal Select Switch to the AP ALL PASS AUTO POLARITY position to measure all AC voltage present Dam age can result if high voltages are present at other than the selected frequency If only the cab signals are of interest then set the Signal Select Switch to the appropriate frequency The Te
30. warranty is limited to repairing replacing or making refund on any instrument or test equipment which proves to be defective within one year from the date of original purchase This warranty does not apply to any of our products which have been repaired or altered by unauthorized persons in any way so as in our sole judgment to injure their stability or reliabil ity or which have been subject to misuse abuse misapplication negligence accident or which have had the serial numbers altered defaced or removed Accessories including batteries and fuses not of our manufacture used with this product are not covered by this warranty To register a claim under the provisions of this warranty return the instrument or test equip ment to Jewell Instruments Manchester NH 03103 transportation prepaid Upon our in spection of the product we will advise you as to the disposition of your claim ALL WARRANTIES IMPLIED BY LAW ARE HEREBY LIMITED TO A PERIOD OF ONE YEAR AND THE PROVISIONS OF THE WARRANTY ARE EXPRESSLY IN LIEU OF ANY OTHER WARRANTIES EXPRESSED OR IMPLIED The purchaser agrees to assume all liability for any damages and bodily injury which may result from the use or misuse of the product by the purchaser his employees or others and the remedies provided for in this warranty are expressly in lieu of any other liability Triplett Jewell Instruments may have including incidental or consequential damages Some states USA ONLY do n
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