Technical Manual
MX800 Transceiver T19 Option
1.7.5 Tone Remote Control Setup Procedure
Note
Note
The tone durations are 120 ms for the HLGT, 40 ms for the FT and the LLGT is a continuous tone. The LLGT
occurs only in the "Transmit On" function. The transmitter stays keyed so long as this tone is present and only
if this tone was preceded by the proper tone sequence.
If T14 option is fitted (front panel channel selector) it must be set to 00 for TRC channel steering.
Disabled Display function tone message, to enable Mxtools Diagnostics to operate correctly.
1.7.5.1
Tone Remote Control Setup -
Programming
1.
Connected option Board via the RS232 port, run PC terminal software.
2.
Type "RMENU
fl
" to access inbuilt software menu.
3.
Select Configuration Menu (C).
4.
Select Decoder Menu (D).
5.
Select (2) AGC Enable.
6.
Select (3) AGC tone band-pass filtered.
7.
Select (4) Tone remote control.
8.
ESC.
9.
Select Configuration Menu (C).
10.
Select Hardware Menu (H).
11.
Select (6) Repeater Mode.
12.
TRC line controlled (C).
13.ESC.
14.ESC.
15. Programming is complete.
1.7.5.2
Tone Remote Control Setup -
TX Alignments
For ease of alignment program the decoder in step 5 above, to (1) Tone PTT decoder.
* Remember to change back to (4) Tone remote control after adjustments.
1.
PTT the transmitter.
2.
Disable AGC on Option Board (JMP13 Position 2-3) and set Notch filter on
(JMP9 2-3)
3.
Using a signal generator, apply a 1 kHz Tone with the line up level as required
(default -10dBm), injected into the rear RJ45 connector, pin3 & 4. (Balanced
audio).
5.
Adjust TX input line gain RV5 to obtain 1 Vp-p at IC13 pin 1.
6.
Monitor TX modulation depth and insure it is equal to the nominal deviation
level. If not adjust RV4 on the motherboard to obtain correct level.
7.
Enable AGC by linking in Jmp13 in position [1-2]
8.
Using a signal generator, apply a Key tone to Audio level @-10dB.
[–10dBm0] (Default –20dBM)
9.
Adjust RV7 so that the combined audio and key tone signal are set to the
required onset compression level. 1Vp-p at IC13 pin 1. (JMP9 2-3)
(Default compression level are, audio -20dBm and key tone signal is set to -
30dBm)
31
© SPECTRA ENGINEERING 2010 Revision 1.0.4