Section 5. Installation
5-8
Connection to a GE Master III Base/Repeater
For:
Zetron Model 37-MAX
To:
GE Master III Base/Repeater
Using:
709-7179 Generic Radio Cable
37-MAX End
Function
J1
pin#
Wire
Color
Radio End
Connection/Notes
+12 volts DC
1
RED
P5.1 (A+ / DC Power)
Ground
2
BLACK
P2.2, P2.3, P4.2 (Power Ground)
Discriminator Input
3
WHITE
P2.5 (Demodulated Audio)
Ground
4
BRAID
No connection
TX Audio Output
5
BLUE
P5.8 (Repeat Audio)
Ground (spare)
6
N/C
PTT Output
7
ORANGE
P2.13 (Repeat PTT In)
Ground
8
BROWN
COR Input
9
YELLOW
P3.5 (CAS)
CTCSS/DCS Encode
10
GREEN
P3.14 (CTCSS Encode)
MASTER III Configuration
The connectors for P2, P3, P4, and P5 are located on the Master III backplane.
1. Cut the printed circuit foil at JP-1 on the T/R Shelf's backplane (19d902948).
2. Program the base station using the standard PC programming software. For proper
operation, the station firmware must be 344A3307G12 (Group 12) or higher (Mastr III
System Board - U4).
a. Repeater (Single Channel only)
b. Repeater Panel Option
c. RF duplex
d. No TX CG or RX CG (leave blank)
e. Set the TX Pot to 200
f. Set the CG Pot to 255
g. No CCT or DODT Timers (set to 0)
h. Remote Control optional
3. Set the repeat and CTCSS modulation levels by adjusting the Zetron unit (See “Tests and
Adjustments” earlier in this section.
Summary of Contents for 37-MAX
Page 72: ...Section 6 Repair 6 6 MODEL 37 MAX REPEATER PAL 702 9808A Schematic 1 3...
Page 73: ...Section 6 Repair 6 7 2 3...
Page 74: ...Section 6 Repair 6 8 3 3...
Page 75: ...Section 6 Repair 6 9 MODEL 37 MAX REPEATER PAL 702 9808A Silkscreen...
Page 76: ...APPENDIX A PROGRAMMING LOG A 1 OVERVIEW A 1 SYSTEM PROGRAMMING A 2 USER PROGRAMMING A 3...
