AKG DMM 6 User Instructions page 42

Description
42
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
1
2
3
4
5
6
7
8
9
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
Function
N.C.
RxD
TxD
N.C.
GND
GND
N.C.
N.C.
N.C.
DMM 6