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1O. 24 V DC power supply
2 flat-pin plugs 1/4" (6.3 mm) for connection to emer-
gency power supply (battery) or other external power
sources. Please mind the correct polarity (+-).
11. REMOTE
The 9-pole D-SUB connector “Remote-Control RS-232"
is a serial computer interface for data transfer and
service functions.
PORT A-D
All inputs and outputs are provided in 2-pole floating
design and isolated from the DMM 4650 circuitry and
adjacent lines.
Each input is realized as an AC opto-coupler (AC floa-
ting polarity).
Each output has a floating relay contact.
Each port connector (DB 25) has 4 inputs, 4 outputs,
and per port +24 V line and ground potential conductors.
By means of the 24 V DC voltage, it is possible to
connect external floating control keys as well as con-
tacts directly.
All inputs and outputs and their corresponding functions
can be freely assigned or a factory preset can be
recalled instead.
12. PORT A
4 control inputs and 4 trigger outputs
1 fault output (alarm on defect of the appliance)
1 ±24V DC, 90 mA power source
13. PORT B
Control inputs, trigger outputs and ±24 V DC
14. PORT C
Control inputs, trigger outputs and ±24 V DC
* optionally retrofitted
15. PORT D
Control inputs, trigger outputs and ±24 V DC
* optionally retrofitted
16. PRE-OUT
RCA-type socket, pre-listen
17. REC-INP
RCA-type socket, recording, announcement
18. OUTPUT
3-pole XLR-type connector (audio output) electronically
balanced (transformer can be retrofitted).
19. INPUT
3-pole XLR-type connector (audio input) electronically
balanced (transformer can be retrofitted).
REAR PANEL
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