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Encoder Installation
40
025-9567E
Table 10. P3 Connector Pinouts on Rear Panel of Model 25
P3 Pin
Label
Function
1
RELAY COM.
control relay common point
2 GROUND
signal
ground
3
CHANNEL BUSY 4
busy input for SEND key 4
4
CHANNEL BUSY 3
busy input for SEND key 3
5
CHANNEL BUSY 2
busy input for SEND key 2
6
CHANNEL BUSY 1
busy input for SEND key 1
Table 11. P4 Connector Pinouts on Rear Panel of Model 25
P4 Pin
Label
Function
1
+12 VDC
from power source
2
+12 VDC
from power source to regulator
3 GROUND
from
power
source
4 GROUND
from
power
source
5
DIGITAL DATA OUTPUT
for future digital Tx
6 GROUND
signal
ground
7
DIGITAL MODE OUTPUT
for future digital Tx
8 GROUND
signal
ground
9
LOOP OUTPUT *
to Auxiliary panels
10 GROUND
signal
ground
11
LOOP INPUT *
from Auxiliary panels
12
CHASSIS
goes to case, chassis not grounded
* Jumper “LOOP OUTPUT” to “LOOP INPUT” if no auxiliary Instant Call panels are used.
Transmitter and Console Control
The Model 25 is designed to directly control from one to eight channels or transmitters,
singly or simultaneously. The encoder achieves transmitter or console control through its
eight control relays, its single DPDT Push-To-Talk (PTT) relay and its single DPDT Audio
Steering relay. The control relays (labeled
RELAY
at the connection) have normally open
contacts and each one closes to a common, ungrounded point (
RELAY COM.
) when
activated. During a calling sequence, the PTT relay and up to eight control relays will close.
The control relays used during a calling sequence depend on the programming of the
encoder. If one of the four
SEND
keys is used to initiate a calling sequence, then the control
relays used are the relays programmed for the
SEND
key. If an instant call key is used to
send a call stack then, the control relays used are the relays programmed for the calls in the
call stacks. The exact timing of the relay closures may be found in the “OPERATION”
section under “THE CALLING SEQUENCE” on page 22. The details of programming the
transmitter control parameters may be found in the “PROGRAMMING ENCODER FROM
FRONT PANEL” section.
Содержание Model 25
Страница 1: ...Model 25 Programmable Encoder Product Manual 025 9567E...
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Страница 16: ...Specifications 8 025 9567E...
Страница 36: ...Operation 28 025 9567E RELAY TIMING DIAGRAM...
Страница 62: ...Auxiliary Panel Installation 54 025 9567E...
Страница 72: ...Troubleshooting 64 025 9567E...