1 March, 2005
V1682OPMA.doc
Page 7 of 32
2.3.2 AES BNCs
These are only available on the 16VR3P and 16VR1P rear panels. They provide for unbalanced AES
inputs and outputs for channels A and B. With these rear panels it is not possible to have the second
AES outputs or re-entrant audio.
2.3.3 Audio I/O
On the 16VR1L and 16VR3L rear panels there is a 44 way connector in the same footprint size as a
standard 25 way D type connector. It is used for all the audio connections, both digital and analogue,
although many of them share pins, and other signals. Of course whether the audio signals are analogue
or digital (or present at all) depends on the type of module fitted to the unit.
If the HDD socket is to be used for audio and connected with multi-way cable it is essential that the
audio pairs, both analogue and digital, are individually screened.
The signals to and from the pins on this connector are as shown in this table:
Pin Signal Pin Signal Pin Signal
Analogue Digital Analogue
Digital
Analogue Digital
15 GND
GND
30 GPI_3
GPI_3
14 ALinP
AESAinP
29 GND
GND
44 ALinN
AESAinN
13 ARinP
AESAin75
28 GND
GND
43 ARinN
AESAin0
12 BLinP
AESBinP
27 N/C
N/C
42 BLinN
AESBinN
11 BRinP
AESBin75
26 GND
GND
41 BRinN
AESBin0
10 GND
GND
25 GPI_2
GPI_2
40 GND
GND
9 ALoutP
AESA1outP 24 GND
GND
39 ALoutN
AESA1outN
8 ARoutP
AESA1out75 23 AESREFinP AESREFinP
38 ARoutN
AESA1out0
7 BLoutP
AESB1outP 22 AESREFinN AESREFinN
37 BLoutN
AESB1outN
6 BRoutP
AESB1out75 21 GND
GND
36 BRoutN
AESB1out0
5 GND
GND
20 GPI_1
GPI_1
35 GND
GND
4 AESCinP AESA2outP 19 GND
GND
34 AESCinN AESA2outN
3 AESCin75 AESA2out75 18 AESREFin75 AESREFin75 33 AESCin0 AESA2out0
2 AESDinP AESB2outP 17 AESREFin0 AESREFin0
32 AESDinN AESB2outN
1 AESDin75 AESB2out75 16 GND
GND
31 AESDin0 AESB2out0
Notes:
1. Pin 1 is at the bottom
2.3.4 GPI
The 16VR1P and 16VR3P panels have a separate Molex connector for external GPI connection. (On
the other panels the Audio I/O connector is used.) The connections are:
Pin Signal
1 GND
2 GPI
1
3 GPI
2
4 GPI
3
The GPI inputs are currently unused on the V1682.
