ZETRON 748, Technical Manual

Page: 34 / 259

Installation
20 025-9368H
Motorola GR300 Repeater
(or a pair of GM300 radios)
For: Zetron Model 38, 39-MAX, 45B, 48B, 48-MAX, 735, 745, 748
To: Motorola GR300 repeater or a pair of GM300 mobiles
Using: 709-7264 Interface Cable
Z E T R O N E N D R E C E I V E G M 3 0 0
F u n c t io n P in C o lo r C o n n e c t io n / n o t e s
1 2 v o lt s A C /D C in 1 R e d
D C g r o u n d 3 B la c k
G r o u n d 4 S h ie ld A U X P in 9 , E m e r g e n c y A le r t
C O R in p u t 1 0 Y e llo w A U X P in 8 , C S Q D e te c t
D is c r im in a to r in 1 5 W h it e A U X P in 1 1 , D is c a u d io
G r o u n d 1 2 B r o w n A U X P in 7 , G r o u n d
G r e e n A U X P in 1 4 , A lt e r n a te C S Q
S p e a k e r e n a b le A U X P in 1 5 , In t e r n a l s p e a k e r
ju m p e r A U X P in 1 6 , E x te r n a l s p e a k e r
Z E T R O N E N D T R A N S M I T G M 3 0 0
F u n c t io n P in C o lo r C o n n e c t io n / n o t e s
G r o u n d 4 J m p r
P T T N C 5 - --
P T T C O M 6 J m p r
P T T N O 7 O r a n g e A U X P in 3 , M ic r o p h o n e P T T
A u x r e la y 8 - --
S e n s e / a la r m 9 - --
T x a u d io 1 1 B lu e A U X P in 2 , M ic r o p h o n e a u d io
G r o u n d 4 S h ie ld A U X P in 9 , E m e r g e n c y A le r t
C T C S S /D C S e n c o d e 1 3 G r e e n A U X P in 5 , F la t T x a u d io
G r o u n d 1 4 B r o w n A U X P in 7 , G r o u n d
W h it e A U X P in 8 , C S Q D e te c t
S p e a k e r e n a b le A U X P in 1 5 , In t e r n a l s p e a k e r
ju m p e r A U X P in 1 6 , E x te r n a l s p e a k e r
S T A T I O N P O W E R
S U P P L Y
Radio Configuration:
1. Set radio jumpers as follows: JU551 position A, flat/unmuted discriminator audio
JU651 position A, TX audio gain selection
JU701 position B, flat TX audio limiter bypass (16ch only)
2. Program both radio accessory connectors (with the RSS) as follows:
ACCESSORY CONNECTOR CONFIG
INT Accessory: None EXT Accessory: General I/O Custom: Y
P IN# DESCRIP TION DATA DIR DEBOUNCE ACT LEVEL
4
NULL 2 Output No High
6 NULL 1 Input No High
8 CSQ Detect Output No Low
9 NULL 1 Input No High
12 NULL 1 Input No High
14 NULL 1 Input No High
3. Install the cable (709-7264) from the 15-pin connector on the Zetron controller to the appropriate
16-pin connectors on the rear of the Radius mobiles. Remove the power cable from the mobile
being used as a receiver. CAUTION! Observe correct polarity (wire colors) while connecting
power cables. Connect the “TO RADIO” plug on the Zetron power cable to the receive radio,
and connect the remaining plug to the station power supply cable.