MultiDyne HD-3500 Series User Manual
Page 7
Instruction Manual, HD-3500 Series
FEATURES and OPERATION 4
REV F, April 1, 2015
Data and GPIO Transport
This link includes three bi-directional asynchronous data channels that can transport
signals up to 3 Mbps. These channels can be set with RS232 or RS422 levels by setting a
switch, see table 1. In addition, there are four GPIO bidirectional channels and, a Tally with a
front indicator. The General Purpose Input interface can be controlled with a short to ground
(open collector), 3.3V, or 5V TTL levels. The General Purpose Output is an internal relay
contact to ground that can safely switch up to 48V and up to 2A signal.
Table 2. Settings for Analog Audio Channel 1
Sw 2
Position
Function
Setting (Default values in Bold)
1-2
An. Audio 1 FS
on-on= 28dBu FS on-off = 16dBu FS off-on = 10dBu FS off-off = 4dBu FS
3
Ch1 Left +6dB
on = 0dB (Hi Z)
off = +6dB (600 Ohm)
4
Ch1 Left 600 Ohms
on = 600 Ohms
off = Hi Z
5
Ch1 Right +6dB
on = 0dB (Hi Z)
off = +6dB (600 Ohm)
6
Ch1 Right 600 Ohms
on = 600 Ohms
off = Hi-Z
Sw 3
Position
Function
Setting (Default values in Bold)
1-2
An. Audio 2 FS
on-on= 28dBu FS on-off = 16dBu FS off-on = 10dBu FS off-off = 4dBu FS
3
Ch2 Left +6dB
on = 0dB (Hi Z)
off = +6dB (600 Ohm)
4
Ch2 Left 600 Ohms
on = 600 Ohms
off = Hi Z
5
Ch2 Right +6dB
on = 0dB (Hi Z)
off = +6dB (600 Ohm)
6
Ch2 Right 600 Ohms
on = 600 Ohms
off = Hi-Z
Table 3. Settings for Analog Audio Channel 2