Syntor X Control Head
Information
Systems90 control head interconnections -
manual 68-81110E93C
32 channel push button control head - manual
68-81110E87B
New Cable / Pinout
Information
Sys90 Heads
- ACM
- alternate control
module
- CSD
- channel scan
display
- CSS
- channel scan
select
- HUB
- microphone or
handset hangup box
- MD
- mobile decoder
(touch-code, quikcall)
- MDC
- MDC-600 data
signaling unit
- MSSD
- pushbutton mode
select with
- PAM
- public address
module
- PMS
- pushbutton mode
select
- SCH
- standard control
head
- SCM
- siren control
module
- STE
- single tone
encoder
- TCE
- touch code encoder
- VPA
- voice privacy
adapter
- MVS
- mobile voice
storage
|
| Radio-Head
Cable |
| Color |
J1 Cable Pin |
Function |
| YEL |
15 |
SWB+ |
| BLK-VIO |
8 |
SWB- |
| BLK-GRN |
3 |
Volume (rec audio) |
| BLK-BRN |
2 |
Det Audio |
| BLK-YEL |
27 |
Mic Hi |
| Shield |
14 |
Audio |
| BRN |
28 |
Squelch |
| ORG |
37 |
Spkr Hi |
| GRN |
22 |
Spkr Lo |
| BLK-BLU |
32 |
PL/DPL Disable |
| BLK-ORG |
4 |
PTT |
| GRN |
- |
Ignition+ |
| ORG |
- |
Batt+ |
| BLK-RED |
5 |
PTT ref |
| WHT-GRY |
31 |
Chnl Scan Enable |
| BLK-GRY |
33 |
Display Enable |
| VIO |
1 |
Head Strobe |
| BLU |
13 |
Mode 1 |
| WHT |
17 |
Mode 2 |
| GRY |
24 |
Mode 3 |
| BLK |
25 |
Mode 4 |
| WHT-BLK |
12 |
Mode 5 |
| WHT-BRN |
16 |
Mode 6 |
| WHT-RED |
23 |
Mode 7 |
| WHT-ORG |
29 |
Mode 8 |
| WHT-YEL |
26 |
Mode 9 |
| WHT-GRN |
19 |
Mode 10 |
| WHT-BLU |
30 |
Mode 11 |
| WHT-VIO |
11 |
Mode 12 |
| GRY-WHT |
- |
Mode Strobe |
| RED-BLU |
34 |
Spare |
| RED-ORG |
6 |
Squelch Tail |
| RED-BRN |
7 |
Detector Mute |
|
Binary Channel
Selection M1-M8 are called data
lines and M9-M12 address lines. When channel
information is needed by the radio, it places a
binary 1111 on the address lines and raises the
HEAD STROBE line to about 2.2 volts The channel
number minus one is encoded in binary on M1
through M6 (M1 is lsb) Lines M7 and M8 are held
low to indicate binary encoding.
1 of 12
Channel Select
This configuration is common to the clamshell
heads. Ground the mode mode select line for the
desired channel (M1-M12) to select it. |
|
| Group |
M5 |
M4 |
Channel |
Bank |
| A |
0 |
0 |
1-8 |
1 |
| B |
0 |
1 |
9-16 |
2 |
| C |
1 |
0 |
17-24 |
3 |
| D |
1 |
1 |
25-32 |
4 |
Selection
of Mode Banks
|
Final
Note - Since the M1-M12 lines are
bidirectional, care is taken to prevent their being tied high or
low. In that way, other heads can also utilize the bidirectional
data. However, if the channel select head is the ONLY , that
warning becomes mute. Channel select heads designed for use with
the Syntor X radios are noted by inclusion of diodes for this
purpose.
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