User's Manual

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RF Technology T800 Page 12
4 CHANNEL and TONE FREQUENCY PROGRAMMING
Receiver
DB25/F
RX
PCB
DESCRIPTION
TX
PCB
Transmitter
DB25/F
1, 14 +12V +12V DC SUPPLY +12V 1, 14
2 TXD TX Data TXD 2
15 RXD RX Data RXD 15
3 COR+ Carrier Operate Sw+ PressToTalk input PTT 3
16 COR- Carrier Operate Sw- Tx/Rx output T/R 16
4 TONE Subtone output Hi Z audio input+ AUD+ 4
17 AUDIO Audio output Hi Z audio input- AUD- 17
5 AGND Audio Ground Ext tone input+ TONE+ 5
18 DISC Discriminator output Ext tone input- TONE- 18
6 LINE+ Line output+ Line input+ LINE+ 6
20 LINE- Line output- Line input- LINE- 20
8 EXT SQ Ext Squelch input Auto Level Control ALC 8
13, 25 GND Ground, 0V GND 13, 25
21 BCD 1 Channel select 1’s digit BCD 1 21
9 BCD 2 Channel select 1’s digit BCD 2 9
22 BCD 4 Channel select 1’s digit BCD 4 22
10 BCD 8 Channel select 1’s digit BCD 8 10
23 BCD 10 Channel select 10’s digit BCD 10 23
11 BCD 20 Channel select 10’s digit BCD 20 11
24 BCD 40 Channel select 10’s digit BCD 40 24
12 BCD 80 Channel select 10’s digit BCD 80 12
4
Channel and Tone Frequency Programming
Channel and tone frequency programming is most easily accomplished with RF Technology
TecHelp software or the Service Monitor 2000 software. This software can be run on an IBM
compatible PC and provides a number of additional useful facilities. DOS and 32-bit versions
are available.
TecHelp allows setting of the adaptive noise squelch threshold, provides a simple means of
calibrating the forward and reverse power detectors, setting the power alarm preset levels, and
enabling transmitter hang time and timeout time limits. TecHelp can be supplied by your
dealer, distributor or by contacting RF Technology directly.