Digital In/Output Card (Optional Src) - D&R AXUM User Manual

A·X·U·M User Manual

10.3 Digital in/output card (optional SRC)

There are four balanced digital inputs and outputs available on each card.
Each RJ45 connector represents a stereo line input and two GPIO's which can be
connected to the 19" patch panels with a shielded twisted pair (STP) cable.
There is also a card available with built in sample rate converters (SRC).
For each GPIO you can choose, by way of a hardware jumper on de board, between TTL
Input/output or Photo-MOS relay output see chapter 11.3.1 GPIO TTL/Relay selection. For
software configuration see chapter 9.3 GPIO.
Pin Con. Pair
1 1A
2 1B
3 2A
6 2B
5 3A
4 3B
7 4A
8 4B
S GND S
Table 10-3: Digital input/output RJ45 connection
With jumper on the I/O card it is possible to select the impedance for S/P-DIF (75Ω) or AES-3 (110 Ω)
This figures shows the jumper location on the I/O card
Figure 46: Digital S/P-DIF or AES3 selection
AXUM from D&R - Phone: +31 294 418014 - E-Mail:
Version 2.5 - 2011-01-28
Pin name Function
+Audio 1 Digital input in-phase
1
-Audio 1 Digital input out-phase
+Audio 2 Digital output in-phase
2
-Audio 2 Digital output out-phase
If jumper TTL-GPIO If jumper GPO
GPIO1a GP-Out
3
GPIO1b nGP-In
GPIO2a GP-Out
4
GPIO2b nGP-In
Shield GND
(TTL) Photo MOS relay
(max 50V, 200mA)
(TTL)
(TTL) Photo MOS relay
(max 50V, 200mA)
(TTL)
info@d-r.nl
Comment
Imp. 110Ω/75Ω
optional SRC:
32..96kHz
Imp. 110Ω/75Ω
32, 44.1, 48kHz
see chapter 11.3.1
see chapter 11.3.1
Audio ground and
reference for GP-In
- 70 -