D21m System
D21m Modules 6-7Date printed: 13.08.07
Jumpers: Level (Ch1...8) Two positions each: 15 dBu or 24 dBu.
LEDs: SIGNAL 1...8 For each of the eight channels a green LED indicates if input signal is present;
its brightness is a rough indication of the signal level.
Alignment: RA1...8 The multi-turn trimmer gives fine adjustment of the input level set with
the jumpers. The factory default is +22dBu in =0dBFS.
If a different input sensitivity has to be adjusted, select
the desired range with the jumper and use the LEVEL trimmer potentiometer
to adjust to the desired level.
Repeat this alignment for all inputs.
Connector Pin Assignment: (25-pin D-type, female)
Pin Signal Pin Signal
1 CH 8 in + 14 CH 8 in –
2 CH 8 in GND 15 CH 7 in +
3 CH 7 in – 16 CH 7 in GND
4 CH 6 in + 17 CH 6 in –
5 CH 6 in GND 18 CH 5 in +
6 CH 5 in – 19 CH 5 in GND
7 CH 4 in + 20 CH 4 in –
8 CH 4 in GND 21 CH 3 in +
9 CH 3 in – 22 CH 3 in GND
10 CH 2 in + 23 CH 2 in –
11 CH 2 in GND 24 CH 1 in +
12 CH 1 in – 25 CH 1 in GND
13 n.c.
Level Ch 1
Ch 1
Ch 3
Ch 2
Ch 4
Ch 5
Ch 7
Ch 6
Ch 8
Level Ch 3
Level Ch 5
Level Ch 7
24 dBu
15 dBu
24 dBu
15 dBu
Level Ch 2
Level Ch 4
Level Ch 6
Level Ch 8
1
Solder/Crimp View
(or Socket View)
13
25
14
