Date printed: 24.01.12
33
D21m System
Level
Ch 1
24 dBu
15 dBu
Level
Ch 3
24 dBu
15 dBu
Level
Ch 5
24 dBu
15 dBu
Level
Ch 7
24 dBu
15 dBu
Level
Ch 2
24 dBu
15 dBu
Level
Ch 4
24 dBu
15 dBu
Level
Ch 6
24 dBu
15 dBu
Level
Ch 8
24 dBu
15 dBu
Jumpers
Level (Ch1-8)
Two positions each: 15 dBu (factory default) or 24 dBu.
Alignment RA1-8
The trimmer potentiometers are factory aligned for 0 dB gain of the ‘Trim’
stage in the block diagram on the left.
Feed a digital audio signal with a level of –10 dB
FS
to the card. Set the jump-
ers to either 15 or 24 dBu and measure on an output. Use the corresponding
LEVEL trimmer potentiometers to set the output level to +5 or +14 dBu,
respectively. If a different output level is required, select the desired range
with the jumper and use the LEVEL trimmer potentiometer to adjust to the
desired level.
Repeat this alignment for all outputs.
Connector Pin Assignment
8× BALANCED LINE OUT
(25pin D-type, female, UNC 4-40 thread)
1
Solder/Crimp View
(or Socket View)
13
25
14
Pin Signal
Pin Signal
1
CH 8 out +
14 CH 8 out –
2
CH 8 out GND
15 CH 7 out +
3
CH 7 out –
16 CH 7 out GND
4
CH 6 out +
17 CH 6 out –
5
CH 6 out GND
18 CH 5 out +
6
CH 5 out –
19 CH 5 out GND
7 CH 4 out +
20 CH 4 out –
8
CH 4 out GND
21 CH 3 out +
9 CH 3 out –
22 CH 3 out GND
10 CH 2 out +
23 CH 2 out –
11 CH 2 out GND
24 CH 1 out +
12 CH 1 out –
25 CH 1 out GND
13 n.c.
