Ramsey Electronics COM3010 User Manual Download

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USER GUIDE
JANUARY, 2005

V1.20.18

COM3010 SERVICE MONITOR

Property of Ramsey Electronics, Inc.

Do not reproduce or distribute.

Summary of Contents for COM3010

Page 2: ...nerating DCS 21 2 06 05 Modulation Steps 22 2 06 06 Generating Two Tone Paging Signals 23 2 07 Receiving a Frequency 25 2 08 Setting Receiver Step Increments 25 2 09 Using the Frequency Counters 26 2...

Page 3: ...ter Receiver Desensitization 49 3 20 08 Tuning a Duplexer 52 4 00 Advanced features 57 4 10 Memories 58 4 20 Smart Link 61 4 30 Scanner 62 4 40 Sweep Generator 64 4 50 User Options 66 4 60 Battery Pow...

Page 4: ...APPENDIX A Button Reference Chart 94 APPENDIX B CTS Tone Frequency List 96 APPENDIX C DCS Code List 96 APPENDIX D Two Tone Modes 97 APPENDIX E General Options Table 97 Specifications 98 Warranty 100...

Page 5: ...5 1 00 INTRODUCTION Property of Ramsey Electronics Inc Do not reproduce or distribute...

Page 6: ...igh capacity Lithium Ion battery A single battery pack has over 2AH of charge capacity allowing a run time of about 1 1 2 hours Two additional batteries can be added to increase the capacity to a tota...

Page 7: ...to the needed extended temperature operation Using other lithium batteries in the COM3010 can result in overcharging causing damage to the batteries and to the COM3010 ONLY the specified batteries mus...

Page 8: ...sensitive If signals are too strong for the receiver to work reliably in AM you can use a small in line at tenuator to drop the level down to usable levels WARNING The RECEIVE IN jack is fuse protecte...

Page 9: ...imple radio checks without moving the cable Internal to the COM3010 is a log power detector which checks the signal present at the RF out jack With the unit powered down the COM3010 will by default sh...

Page 10: ...dard 1A slow blow fuse only L AC Input There is a 15VDC switching power supply internal to the COM3010 that can operate from a wide range of AC voltages without having to set any jumpers The power sup...

Page 11: ...this heat sink inside of the case During power meter testing this will become quite warm During use allow for plenty of air circulation around the heat sink to allow normal convection cooling to occu...

Page 12: ...eld 4 is accessed through the COUNT key The exception to this is the standard GENERATE screen which contains five fields instead of four Two fields appear on the upper line and three fields on the low...

Page 13: ...13 2 00 BASIC OPERATION Property of Ramsey Electronics Inc Do not reproduce or distribute...

Page 14: ...in this manner To set the INCREMENT for a given function press the SHIFT key and then the proper FUNCTION key To Set Generator Frequency increment press the SHIFT key then press the GENERATE key the...

Page 15: ...o step the level setting make sure the level field is selected blinking icon or press LEVEL and use the UP and DOWN arrow keys Level can be entered in dBm or volts and can be stepped in dBm or volts d...

Page 16: ...press SHIFT then MHz dBm or end with any scal ing key This sets the generator level to 140dBm as well as setting the generator to its lowest possible level Example GENERATE TX Level Modulation Seq Re...

Page 17: ...ed by the T icon If the T icon is not already flashing press the INT button to select the tone field To enter a 1 kHz tone press 1 kHz mV You can enter between 0 1Hz to 3 kHz into this field Example T...

Page 18: ...on will be replaced with AM and modulation will be displayed To enter a new AM value of 50 press AM 5 0 ENTER The COM3010 will now be generating AM with 50 modulation and a 1 kHz tone Example GENERATE...

Page 19: ...n press making sure the AGC icon still indicates tone mode AGC Icon Mode Name Description Voice AGC Voice AGC Attack and decay are both fast to track voice levels and bring them to an acceptable level...

Page 20: ...nter a new CTS frequency of 78 5Hz press The tone may be toggled on and off by pressing To enter a deviation value press to select the FM field the icon will blink To enter a deviation of 300 0Hz pres...

Page 21: ...inverted digital code press SHIFT DCS press them again to return to normal Note the N or I on the end of the code To invert or de invert the DCS code press SHIFT DCS to toggle the code For example If...

Page 22: ...l other format s deviation steps For FM press SHIFT FM and enter in a value from 0 1 Hz to 1 kHz followed by Hz uV Example To enter a value of 50Hz For AM press SHIFT AM and enter a value from 1 to 50...

Page 23: ...tone page press SHIFT INT to select internal generator Then press GENER ATE selects T1 followed by the frequency of tone one and then HZ uV Then enter the sec ond tone by pressing FM selects T2 follow...

Page 24: ...necessary to change all fields every time typically you will only need to change the two tones and send Two tone uses its own deviation setting It will not affect the internal setting As an added feat...

Page 25: ...ew sections 2 08 Setting a Receiver Step Increment Rather than having to move the cursor to a specific digit to increment frequency the COM3010 employs increments for important fields To access an inc...

Page 26: ...Receive field is 5 kHz the frequency copied into the Receive field will be rounded to the 5 kHz step so it will be set to 10 0000 MHz Counter Icon Mode Gate Description Receiver IF Counter 0 1s Used...

Page 27: ...quency Each division represents 1kHz this display is showing 3 kHz 4 2 kHz 2 10 02 This reduces the scale to 4 kHz This allows more resolution for detecting smaller signals without having to zoom 2 10...

Page 28: ...ncy Error meter below 2 10 08 The Digital Frequency Error meter will measure the difference between the COM3010 s receiver frequency and counted signal It will then display the difference digitally 2...

Page 29: ...the squelch opens 2 11 02 Displays absolute RSSI level of a received signal from approximately 120dBm to 30dBm Accuracy of 1dBm after loop though RSSI calibration See user calibration section 2 11 03...

Page 30: ...eter is the signal level RSSI bargraph currently reading 92dBm and the deviation meter on the right Example of the frequency error bargraph This auto scaling bargraph is for visual tuning but you can...

Page 31: ...hile manually tuning an oscillator Use the frequency error bar graph for tuning This is an example of the zoomed audio frequency counter and the RSSI meter GENERATE TX Level Modulation Seq Reg RECEIVE...

Page 32: ...32 Your Notes Property of Ramsey Electronics Inc Do not reproduce or distribute...

Page 33: ...33 3 00 TYPICAL TEST PROCEDURES Property of Ramsey Electronics Inc Do not reproduce or distribute...

Page 34: ...r with the COM3010 you will be able to combine and modify these procedures to fit your own op eration increasing its efficiency This section also assumes the user has a basic understanding of the oper...

Page 35: ...ll result 2 Connect a BNC to BNC cable from the 30dBm OUTPUT on the back panel to the RECEIVE IN jack on the front panel This will take the attenuated output of the power meter circuit and return it t...

Page 36: ...iation Meter 11 Inject appropriate audio signal into the transmitter under test 12 Key the transmitter 13 Adjust the deviation on your transmitter under test as required to meet its specifications 14...

Page 37: ...tch to Power Meter mode when the radio is keyed or to enter Power Meter mode manually press SHIFT 3 6 Key the radio the power reading is displayed in the Generate screen 7 The reading can be toggled b...

Page 38: ...o indicate that the count value and calibration are correct 7 If the counter is not registering you will see POWER UNCAL To remedy this either use the COUNT IF method or make sure the radio is keyed l...

Page 39: ...ting the step size to the channel size causes the COM3010 to set the Receiver or Generator to the channel frequency not the counted frequency which is important if the radio being tested is off freque...

Page 40: ...the transmitted power in the GENERATE screen 6 The CTS frequency information will be displayed in the RECEIVE screen s AF meter lower right field or the user may enter Zoom mode the by pressing In Zoo...

Page 41: ...et the COM3010 s RF Level to minimum 0 025uV 5 Set the Level Step Size to 0 025 uV 6 With the Level Field selected use the UP Arrow to increase the level in 0 025uV steps 7 Increase the RF level until...

Page 42: ...stment will be made later 4 Set the COM3010 s Generate Frequency to the frequency of the receiver to be tested Example 464 55 MHz 5 Set the output of the Generator to a level slightly greater than the...

Page 43: ...r reaches an average of 12 dB SINAD Read the current RF Level setting this combined with the SINAD measurement is the sensitivity of the receiver Note The SINAD meter uses the AGC of the MOD IN jack t...

Page 44: ...er under test Example 464 55 MHz 4 Press to select the CTS Mode FM Modulation is automatically selected The default deviation is 500 Hz The deviation can be changed by pressing FM and entering a new v...

Page 45: ...fault deviation is 500 Hz The deviation can be changed by pressing FM and entering a new one value Example 250 Hz Press 7 The Code field is automatically selected unless deviation was changed in the p...

Page 46: ...access Tone 2 frequency 0 1Hz to 3 kHz 8 Set Tone Two Example 445 7 Hz Press 9 The deviation is set to a default of 4 kHz To change the deviation press the button Enter in a new deviation value Exampl...

Page 47: ...requency Example 464 15 MHz 3 Turn on external deviation pressing 4 Select the digital AGC mode by pressing until you see the Random Audio icon in the GENERATE screen lower center field 5 Set the desi...

Page 48: ...Turn on external deviation by pressing 4 Select the tone AGC mode by pressing until you see the sine wave icon 5 Set the desired modulation type by pressing or 6 Set the required FM deviation or AM p...

Page 49: ...round 1 Vpp 2 Set the generator for desired RF frequency Example 464 15 MHz Press 3 Turn on external deviation by pressing 4 Select the tone AGC mode by pressing until you see the square wave icon 5 S...

Page 50: ...or Band Reject square or round cavity design Be sure to check the manufacturer s specifications to verify insertion loss The use of the calibrated isolator T assures that the COM 3010 is isolated accu...

Page 51: ...COM 3010 to generate the repeater receiver frequency 6 Attach the already calibrated Isolator T into the transmission line as shown in Figure 2 7 Start by injecting a signal set generator to achieve...

Page 52: ...setting to arrive at the actual dB level of desensitization 14 Typical readings are usually no more than 1 3 dB of measurable desensitization TX PASS TX PASS RX PASS RX PASS FIGURE 2 DESENS TEST SETU...

Page 53: ...nly the tuning rods or screws The lock nuts on the tuning knob adjustment shafts should be loosened to allow the tuning shafts to be adjusted smoothly Be aware that tuning is slightly affected as the...

Page 54: ...exer transmitter port 5 Connect the RECEIVE IN to the duplexer receiver port 6 The receiver in the RSSI mode is now connected Adjust the cavity closest to the RECEIVE IN connection for minimum signal...

Page 55: ...ill also be the noisiest signal maximum negative RSSI indication Next do the same for the other cavities in line 7 You may need to increase the Generator output level Readjust all the in line cavities...

Page 56: ...ator dbm value to the RSSI value Example Generator 90 dbm and Receiver RSSI 91 5 dbm 1 5 db insertion loss It should be close to the manufacturer s specifications 4 Likewise move the cable from the RE...

Page 57: ...57 4 00 ADVANCED FEATURES Property of Ramsey Electronics Inc Do not reproduce or distribute...

Page 58: ...her memory location For example when saving a register to a sequence that has memories stored in it the COM3010 will select the first empty register available The only exception occurs when the sequen...

Page 59: ...own arrows to scroll through different registers or Copying Registers 1 Recall the sequence and register to be moved then the sequence and register to be copied to Example Sequence 5 register 13 copie...

Page 60: ...is reserved for power up settings This replaces the default start up setting when the unit is powered on If a new power up setting is desired set the Generate and Receive screens as required and save...

Page 61: ...the Generate frequency to get 464 575 MHz Next press and the value of 25 kHz is entered as the offset Press the UP DOWN arrow keys while in the Generate field The Generator and Receiver are locked to...

Page 62: ...omatically sort the order This allows for faster frequency locks during the sweep process Keep in mind when saving frequencies that the only parts of the memories recalled during a sweep are the Recei...

Page 63: ...the frequency for 5 seconds after the squelch closes During this period of time the active channel s bar will flash indicating that the squelch is closed but waiting to resume scanning Adjust the squ...

Page 64: ...o this field is gained through the RECEIVE FM key The Log methods will take increasingly larger steps as the sweep goes up in frequency so there will be more points at low frequencies than at high fre...

Page 65: ...MHz in the FB field 4 Set LEVEL to 120 dBm 5 Set TYPE to linear 6 Set the number of points to 100 in the NUM field 7 Press METER SELECT to start the sweep or COUNT to exit with the changes saved so y...

Page 66: ...e serial port and is accessed using the LEVEL key The Clear Mems clears stored memories and is selected using the COUNT key On the RECEIVE screen INFO is accessed through the RECEIVE FM key and provid...

Page 67: ...t the password As soon as you change the password WRITE IT DOWN IN THIS MANUAL Many users will change the password to see how it works and immediately forget their newly created password This password...

Page 68: ...toggle this function Serial Port Options will activate the Serial Port Menu and give you the following choices Serial Port Name Choices Default Description Baud 300 600 1200 2400 4800 9600 14400 9200...

Page 69: ...lear Mems function press The button selects YES to delete all memory locations or the button selects NO and exits to the Main Options Menu 4 60 Battery Power Saver This function will blank both the di...

Page 70: ...70 Your Notes Property of Ramsey Electronics Inc Do not reproduce or distribute...

Page 71: ...71 5 00 USER CALIBRATIONS Property of Ramsey Electronics Inc Do not reproduce or distribute...

Page 72: ...40dBm and 120dBm to an accuracy of 1 dB 1 Set the Squelch Control fully counterclockwise 2 Select a Cable or series of cables and connectors to be used for testing 3 Press to enter the Main Calibratio...

Page 73: ...analog converter value This value can be any digit from 0 to 4095 The FR Field displays the Receiver Frequency It should be set to the user s reference frequency The default frequency is 999 15MHz Thi...

Page 74: ...s represented by four divisions 7 Press The reference source was connected in Step 1 8 Press any key to automatically calibrate the COM3010 using AutoCal 9 When the GENERATE screen reads Frequency cal...

Page 75: ...eter calibration 4 Press to restore to system default of zero or press to continue with calibration 5 Press any key to begin meter calibration 6 The COM3010 will go though a simple procedure of genera...

Page 76: ...76 Your Notes Property of Ramsey Electronics Inc Do not reproduce or distribute...

Page 77: ...77 6 00 DETAILED INFORMATION Property of Ramsey Electronics Inc Do not reproduce or distribute...

Page 78: ...uency or the Nyquist frequency It is good practice to stay below 1 3 the sampling frequency so the sampling components can be filtered out with a simple low pass filter Typically the radios that will...

Page 79: ...y and dynamic range The power meter is very accurate with a single carrier with harmonics at least 30dB down but when harmonics increase over this level and especially if there are high levels of mult...

Page 80: ...he back This chain of connections has a predictable amount of loss from front to back and is in part used during the power meter calibration in the lab The following table will help if using the 30dB...

Page 81: ...e SINAD meter out connect a cable between GEN OUT and RECEIVE IN and another between MONITOR and EXT IN Set the generator and receiver to the same frequency say 146 52MHz Hint After setting receive an...

Page 82: ...ween 12dB and 20dB The SINAD meter of the COM3010 is very accurate for the application of radio testing since both the generator tone and the SINAD calculations are digitally realized This means that...

Page 83: ...stems A standard 9 pin serial cable is also required The COM3010 is addressable meaning that it is possible to change the address on each of several different units and have them in series but only th...

Page 84: ...erminal will not turn off the Flow Control setting for the serial port unless you go through the following procedure 1 Set the COM3010 baud rate for 9600 8 n 1 See previous example 2 Disconnect HyperT...

Page 85: ...ng can be sent to the COM3010 s serial port as a text file sys open 555 Opens default addressed COM3010 sys prompt on Turns on system prompt sys echo off Turns off character echo set level 35 Set leve...

Page 86: ...F OK BAD If echo is on COM3010 sends back everything it receives through the RS232 port SYS TIMEOUT 0 7200 OK BAD Sets serial comm timeout from 1 to 30 minutes 0 No timeout time in seconds SYS HELP AA...

Page 87: ...F OK BAD Turn off all modulations SET GFM Set Generator in FM mode SET GAM Set generator in AM mode SET EXTDEV kHz 0Hz 75 0000kHz OK BAD Set FM modulation deviation SET EXT 0 75 OK BAD Set AM modulati...

Page 88: ...ET FUP OK BAD Receiver up one step SET FDOWN OK BAD Receiver down one step SET POWERME TER ON OFF ON OFF OK BAD Sets the power meter dis play on or off big meter You will need to turn it off to regain...

Page 89: ...ce register MEM NXT OK BAD Recall next memory in the sequence MEM PREV OK BAD Recall previous memory in the sequence MEM SAVE 00 00 99 99 OK BAD Save memory in specified sequence register MEM DEL 00 0...

Page 90: ...7kHz kHz kHz Get current FM deviation numerically GET DELTAF MHz Get frequency error from current receive frequency see counter mode lists GET DBSINAD SINA D SIN 0dB 40dB dB Get dB SINAD see valid me...

Page 91: ...nrator AM FM state GET EXTDEV 0Hz 75 0000kHz kHz Get FM modulation deviation GET EXT 0 75 Get AM modulation percent GET INTTONE 0 1Hz 3 0000kHz kHz Get FM Tone frequency GET INTDEV 0Hz 75kHz kHz Get F...

Page 92: ...mode lists GET LMETER 1 9 Get Lower Meter Mode See valid meter mode lists GET UMETER 1 4 Get Upper Meter Mode See valid meter mode lists GET POWER METER OFF ON ON OFF Returns the large power meter to...

Page 93: ...Yes No 8 Audio Frequency Counter Yes Yes 9 Sinad Meter Yes Yes Upper Meter Mode Table 1 RSSI Bargraph 2 RSSI Text 3 RF Power 4 Power Supply State Voltage Counter Mode Table Mode Mode Name 1 Direct RF...

Page 94: ...0mS 2 10mS 3 25mS 4 50mS 5 100mS 6 250mS 7 500mS 8 1S Sweep Mode Table 1 Decade 2 Octive 3 Linear External AGC Mode Table 1 Tone 2 Voice 3 Digital 4 Sinad 6 50 07 Various Mode Options Property of Rams...

Page 95: ...95 7 00 APPENDIX Property of Ramsey Electronics Inc Do not reproduce or distribute...

Page 96: ...N STEP Sets the generator step and round ing size FM Sets generator in FM mode None AM Sets generator in AM mode None COUNT Sets generator to the current counter reading None LINK Locks receive and tr...

Page 97: ...rs units for active field GEN ON OFF Toggles the generator on and off ENTER Enter on the current field ESCAPE Aborts entering of the current field RECEIVE FM Sets receiver into receive FM mode RX STEP...

Page 98: ...N 465N 632N 026N 115N 174N 265N 371N 466N 654N 031N 116N 205N 266N 411N 503N 662N 032N 122N 212N 271N 412N 506N 664N 036N 125N 223N 274N 413N 516N 703N 043N 131N 225N 306N 423N 523N 712N 047N 132N 226...

Page 99: ...12 5 100 62 5 Allows the selective dimming of the displays Helps in dark environments Does not save on battery power Splash ON OFF ON Allows disabling of the startup splash screen Flt Cnt ON OFF ON A...

Page 100: ...er 80 dB of range on receiver side 40 dBm to 120 dBm Generate Frequency 100 kHz to 1 0 GHz 1 Hz steps Frequency Accuracy 0 1ppm standard RF output Level 140 dBm to 0 dBm 0 1 dBm steps Level Accuracy 1...

Page 101: ...equency Receiver sensitivity Frequency range limited to bandwidth of current set receive frequency 10 kHz 1 Hz and 10 Hz resolutions General Receiver input has diode protection and fused parts Battery...

Page 102: ...attery Pack BP3010 additional battery pack to extend battery life 1 pack supplied 3 max Carrying Case CC3010 custom Cordura padded travel case w strap Property of Ramsey Electronics Inc Do not reprodu...

Page 103: ...ation Drive Fishers NY 14564 585 924 4560 techsupport ramseymail com Tech Support will help you diagnose your problem and if necessary issue an RMA for the return of your COM3010 Equipment cannot be r...

Page 104: ...0 Fishers Station Drive Victor NY 14564 585 924 4560 www ramseytest com Copyright Ramsey Electronics Inc 2005 All rights reserved COM3010 January 2005 V1 20 18 Property of Ramsey Electronics Inc Do no...

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