Specifications

179
Wiring Connections to the Model 620x
• If a COR signal cannot be obtained from the radio receiver, the M620x must be
programmed for VOX operation and the VOX threshold level set
• Set jumper JP5 (FFSK Output Range) to the “RAD” position, if FFSK transmit
levels cannot be set high enough, move it to the “TEL” position and try again
Trunked Radios
The information provided here is of the most generic type. Interfacing information
regarding several specific types of trunked radio systems used in the public safety sector
can be found in the Model 6 product manual (part number 025-9157).
Caution! If the COR input (J5, pin 1) on the Model 620x is not used, it
must be grounded to prevent spurious signals.
!
Caution! Channel Grant signaling must be supported by your radio type,
or the system will not function reliably or efficiently due to
non-deterministic channel grant response time in most
trunking systems. If your radio type does not support a
channel grant output, use a dedicated talk-group or
emergency group call as an alternative approach. “Mission
critical” fire station alerting can not be achieved otherwise.
!
12345678
ON
SW-2
Unit Address = 5
Primary Model 6
4
3
1
J5
1
11
9
J3
Unit Address = 517
Secondary Model 6
12345678
ON
SW-2
12345678
ON
SW-1
4
3
1
J5
1
11
9
J3
PA System
4W RX
4W RX
RX COR
TX & 2W RX
TX & 2W RX
TX PTT
PA Busy
PA Audio Comm A
PA Audio Comm B
GND
11
9
8
7
J4
11
9
8
7
J4
Trunking
Radio
Radio Interface Unit
PTT
Relay
Mic High
Mic Low
Spkr Low
Spkr High
GND
12345678
ON
SW-1
= Not used for setting address
= Not used for setting address