GUIDE TO INSTALLATION AND OPERATION
6
| AMX-1901
2.4.3 Details of rear panel connections
3G/HD/SD IN – Serial digital 3G/HD/SD input
Connect a serial digital video signal, conforming to the SMPTE 425M standard for 3G input signals, SMPTE 292M
standard for HD input signals or SMPTE 259M standard for SD input signals, to the BNC labeled
3G/HD/SD IN
. The
AMX-1901 will automatically switch to the detected line/frame rate format.
3G/HD/SD OUT – Serial digital video outputs
The AMX-1901 provides two 3G/HD/SD SDI video outputs on BNC connectors, labeled
3G/HD/SD OUT 1 and 2.
The
SDI video signal conforms to the input standard. When there is no signal connected to the input, the selected recovery
signal is used. The same signal is carried on both outputs.
REF IN – External reference input
Connect either Black Burst per SMPTE 170M / SMPTE 318M / ITU 624-4, or Tri-Level sync per SMPTE 274M /
SMPTE 296M.
ANALOG AUDIO IN – Analog audio inputs (8)
The eight analog audio inputs are high-impedance balanced inputs, via a 26-pin D-SUB connector. Pinout for the
connector is shown in the table.
Fiber I/O – Fiber-optic inputs and outputs
Rear panels whose part number ends in –F incorporate a fiber optic interface. The interface consists of two parts:
Signal
Pin #
AUDIO IN 1 (Hi)
1
AUDIO IN 1 (Lo)
10
AUDIO IN 2 (Hi)
2
AUDIO IN 2 (Lo)
11
AUDIO IN 3 (Hi)
3
AUDIO IN 3 (Lo)
12
AUDIO IN 4 (Hi)
4
AUDIO IN 4 (Lo)
13
AUDIO IN 5 (Hi)
5
AUDIO IN 5 (Lo)
14
AUDIO IN 6 (Hi)
6
AUDIO IN 6 (Lo)
15
AUDIO IN 7 (Hi)
7
AUDIO IN 7 (Lo)
16
AUDIO IN 8 (Hi)
8
AUDIO IN 8 (Lo)
17
GND
9, 18 to 26
