Description

Serial control

This connection is for use by authorised specialist staff only!

NOTE

Standard: RS-232

Use: connect to PC, firmware update, external control

Figure 9: RS232 socket

The serial control takes place using a 9 pin sub-D socket with the label "RS232". This socket allows you to perform software updates.

The pin assignment is as follows:

Pin

Function

1

N.C.

2

RxD

3

TxD

4

N.C.

5

GND

6

GND

7

N.C.

8

N.C.

9

N.C.

Earth/Ground connection

Figure 10: Phoenix terminal

A phoenix terminal connects the case with the 0 V potential of the power supply.

Only bridge the 0 V potential with the grounding (factory setting) or connect it to the central system ground, as otherwise the phantom power has no reference point and will not function.

NOTE

46

DMM 12BC

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AKG Acoustics DMM 12BC manual Description Serial control, Earth/Ground connection