RT-500-M
RHOTHETA
Page 147 of 168
User Manual
8 Interfaces
and
Installation
8.1 Power & I/O
Contact
/ Pin
Signal
15
+12 V to +30 VDC
Input power supply
Note
Ground of power supply is connected to housing with an anti-
interference device.
8
GND (Ground)
7
Permanent
Operation
Optional input: external power on
When applying a voltage > approx. 2 V
DC
the device will be put
into permanent operation independent of the status of the
On/Off button.
(Most simple activation: Connection / bridge Pin 7
Ù
Pin 15)
14
PTT / SBS
Optional input in order to suppress self-bearing. When
connecting input PTT/SBS (Self Bearing Suppression) to
Ground, self-bearing is suppressed.
6
GND
12
Squelch Out
When receiving a signal this pin is connected to ground (active)
by the means of an open collector output.
Max. current 200 mA.
4
Alarm Relay
Optional alarm contact (mechanical relay as NOC (Normal
Opening Contact)).
Max. 1 A at 30 VDC resp. max. 0.3 A at 125 VAC
Pin 1 = COM; Pin 4 = NC; Pin 9 = NO
1
9
3
S
Optional connection of external speaker.
Impedance of speaker: 4...600
8
Max
: 8 V
SS
, Power: 1.5 W
Max
Note
The audio exit is a symmetric push-pull amplifier. This inhibits
that none of the speaker signals are to be connected to the
ground.
11
Speaker -
13
Audio Line Out
Symmetric audio exit
Adjustable under Setup/General, from 200 mV
SS
at 10% to max.
2 V
SS
at 99%, 600 Ohm.
5
Audio Line Out
2
Programmable IN
(
Electrical identical to
PTT
)
Optional programmable input:
- PTT
- No
function
To activate connect to GND.
10
Programmable OUT
(
Electrical identical to
Squelch Out)
Optional programmable output (open collector):
- Alarm
- Status
- Squelch
- No
function
Max. current 200 mA.
Table 16. Power & I/O Connector
Содержание RT-500-M
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