Available I/O Rack Cards; Mic Input Card - D&R AXUM User Manual

A·X·U·M User Manual

10 Available I/O rack cards

Depending on your audio-connections, you can select the I/O cards.
The next paragraphs will give you a detailed overview on the currently available cards.

10.1 MIC input card

There are four balanced MIC inputs available on each card.
Each RJ45 connector represents a MIC input and two GPIO's which can be connected to
the 19" patch panels with a shielded twisted pair (STP) cable.
On each MIC input you can individual activate the +48V phantom power and PAD.
For each GPIO you can choose, by way of a hardware jumper on the 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 10-1: MIC RJ45 connection
AXUM from D&R - Phone: +31 294 418014 - E-Mail:
Version 2.5 - 2011-01-28
Pin name Function
+Audio 1 MIC input in-phase
1
-Audio 1 MIC input out-phase
+Audio 2 not used
2
-Audio 2 not used
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. 2kΩ
max. level +20dBu
see chapter 11.3.1
see chapter 11.3.1
Audio ground and
reference for GP-In
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