D&R AXUM - 10.5 CRM Output Card Functions

A·X·U·M User Manual Version 2.5 - 2011-01-28
AXUM from D&R - Phone: +31 294 418014 - E-Mail: info@d-r.nl - 72 -
10.5 CRM output card
There are four stereo outputs available on this card. RJ45 connector A&B represents the
CRM stereo line output. RJ45 connector C&D represents the stereo phones outputs.
Each RJ45 connector has also two GPIO’s which can be connected to the 19” patch
panels with a shielded twisted pair (STP) cable.
This stereo output card has some special functions:
- Analog level and mute functionality.
- Headphone amplifiers.
RJ45 A is stereo balanced output 1
RJ45 B is stereo balanced output 2
RJ45 C is stereo headphone output 3&4
RJ45 D is stereo headphone output 3&4
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.
Table 10-5: CRM output RJ45 connection (A&B)
Table 10-6: Phones RJ45 connection (C&D)
Pin
Con.
Pair
Pin name
Function
Comment
1
1A
1
+Audio 1
Left line output in-phase
Imp. 56Ω
max. level +26dBu
2
1B
-Audio 1
Left line output out-phase
3
2A
2
+Audio 2
Right line output in-phase
Imp. 56Ω
max. level +26dBu
6
2B
-Audio 2
Right line output out-phase
If jumper TTL-GPIO If jumper GPO
see chapter 11.3.1
5
3A
3
GPIO1a
GP-Out (TTL)
Photo MOS relay
(max 50V, 200mA)
4
3B
GPIO1b
nGP-In (TTL)
7
4A
4
GPIO2a
GP-Out
(TTL)
Photo MOS relay
(max 50V, 200mA)
see chapter 11.3.1
8
4B
GPIO2b
nGP-In (TTL)
S GND S Shield GND
Audio ground and
reference for GP-In
Pin
Con.
Pair
Pin name
Function
Comment
1
1A
1
+Audio 1
Left phones 1 output
Imp. 5Ω
minimal phones imp.
32Ω
2 1B -Audio 1 Right phones 1 output
3
2A
2
+Audio 2
Left phones 2 output
Imp. 5Ω
minimal phones imp.
32Ω
6 2B -Audio 2 Right phones 2 output
If jumper TTL-GPIO If jumper GPO
see chapter 11.3.1
5
3A
3
GPIO1a
GP-Out (TTL)
Photo MOS relay
(max 50V, 200mA)
4
3B
GPIO1b
nGP-In (TTL)
7
4A
4
GPIO2a
GP-Out (TTL)
Photo MOS relay
(max 50V, 200mA)
see chapter 11.3.1
8
4B
GPIO2b
nGP-In (TTL)
S GND S Shield GND
Audio ground and
reference for GP-In