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1402MAN.TXT

Operating Modes: 

The standard 1402  will operate in four distinct modes.  The 1402 

has two built-in timers.   The interval  timer  controls the time 

interval  or  time period  at  which identifications  take  place 

(usually about 15 minutes).  The other timer is the monitor delay 

timer.   This timer will delay an identification until it reaches 

it's  set  point  (usually  2 to 5 seconds).   It is reset  to  0 

whenever there is  activity on any of the monitor inputs.    This 

timer keeps the 1402 from identifying on top of other traffic.  

     Mode 1:   The unit will identify every time interval as set 

by interval timer. 

     Mode 2:   The unit will identify from 0 to 19 seconds after 

transmission has ended.*  This 0 to 19 second delay 

time is called "Monitor Delay Time". 

     Mode 3:   The unit will identify one time interval after the 

transmitter has been keyed.*  This time interval 

is set by the interval timer.  Grounding the 

transmitter monitor terminal starts the timer. 

     Mode 4:   The 1402 will identify over any audio at the 

beginning of the transmission and again identify 

one time interval after the transmitter was first 

keyed.*  This time interval is set by the interval 

timer.  Grounding the transmitter monitor terminal 

starts the timer. 

* Provided the "transmitter monitor" is connected to the transmitter.

NOTE:     The "COR monitor" terminal and the "XMTR monitor" terminal

are active in all of the above modes and if either or both

terminals is given a "digital low" (less than 1.2 VDC), no 

identification will take place until the "digital low" 

resumes to a "digital high" (above 3.5 VDC).

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Summary of Contents for 1402

Page 1: ...the RACOM 1402 Identifier 5 Operating Modes 6 EXTERNAL CONTROLS AND POWER HOOKUP Power Requirements 7 Fuse 7 Front Panel Controls and Indicators 7 INITIAL OPERATION Initial Check Set up 7 Call Sign P...

Page 2: ...red to correct the interference INSPECTION After the instrument is unpacked it should be carefully checked for damages received in transit If any shipping damage is found file a claim with the carrier...

Page 3: ...sh to talk closure to ground Also starts time period Rx and Tx Monitor Loading 1 mA maximum at 0 VDC 0 mA for voltages above 5 VDC Rx and Tx Monitor Levels Digital low is defined as 0 to 1 2 VDC Digit...

Page 4: ...IONS for Model 1402D Audio Output 600 ohm balanced DC blocked and isolated from ground Variable up to 3 DBM Relay Contacts Two form C DPDT contacts rated at 2 Amps Audio Monitor Input is 10K ohm imped...

Page 5: ...jected to a pre inspection electronic calibration performance tests a 48 hour cycling test burn in and a functional operation test prior to shipment USAGE OF THE RACOM 1402 IDENTIFIER The 1402 identif...

Page 6: ...ended This 0 to 19 second delay time is called Monitor Delay Time Mode 3 The unit will identify one time interval after the transmitter has been keyed This time interval is set by the interval timer...

Page 7: ...ct switch that will cause identifier to identify regardless of other conditions when momentarily toggled This switch is also used to program the 1402 ACTIVE LED During normal operation this LED will f...

Page 8: ...ircuitry Each individual installation may require touching up of this control to match it to the receiver s audio output level The important consideration is to see that hum and noise does not falsely...

Page 9: ...e PC and start the PC program marked 1402 BAT on the 1402 disk The program will instruct you as to when the other end of the cable should be plugged into J2 on the 1402 and when to apply power to the...

Page 10: ...to add DE from if desired 17 Push the test switch 18 Set SW1 to 0 19 1402 is now back in normal operation Push the test to hear the call letters 20 Set SW2 to the desired code speed 21 Set SW3 1 to th...

Page 11: ...e to 0 Tone Frequency Setting Hz and options at address F SW3 SW3 Position of SW2 1 2 0 1 2 3 4 5 6 7 8 9 See below 2020 1660 1410 1220 1080 970 870 800 740 690 SW3 1 Open Modes 1 2 or 3 Also see the...

Page 12: ...ge resumes to a digital high more than 3 5 VDC indicating that the channel is cleared of traffic Some receivers have an active high squelch voltage where a digital high means the channel is busy and a...

Page 13: ...5 VDC is applied May connect to a TX key light circuit if available and electrically compatible AUDIO OUTPUT TB1 7 See next page for Model 1402D This terminal is a ground referenced medium audio outpu...

Page 14: ...nd or to a standard 600 OHM audio transmission line Its 10K OHM input impedance allows for relatively minimal audio power losses The function of the audio monitor is to keep a watch on receiver activi...

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