3GM v1.5 www.aja.com
5
User Controls
The user interface for the 3GM is an 8-position DIP switch accessible through a cut-out in
the bottom of the unit.
DIP Switches
LEFT RIGHT
OFF ON
Table 1. 3GM DIP Switch Settings
Switch FUNCTION LEFT RIGHT
1 MODE:
Multiplex
or DA
MUX:
Converts between Dual-link (SMPTE 372M) and
3G (SMPTE 425M).
A Dual-Link input results in a 3G output (mode
A or B).
A 3G-SDI input (mode A or B) results in a Dual-
Link output
DA:
Places device in distribution amplifier mode.
A Dual-Link input results in a Dual-Link output
A 3G-SDI input results in a 3G output
(either in mode A or B).
Note: In both cases, the monitor output for a 3G or Dual-Link input will be a downconverted HD
(SMPTE 292M compliant) output.
Note: In both cases, if a single HD or SD SDI signal is fed to the Link A input connector, 3GM
enters DA mode and routes that SDI input signal to all three output connectors.
2 OUT MAP:
3G A or 3G B
output map
(when set to
output 3G)
B:
Selects 3G B output mapping.
3G output is set to the B mapping structure.
A:
Selects 3G A output mapping.
3G output is set to the A mapping structure.
3 INPUT:
Input signal
color space:
YCbCr/RGB
YCbrCr:
If Dipswitch 8 is set to Manual or there is no
payload ID, the 3GM will behave as if the input
video is in the YC color space.
RGB:
If Dipswitch 8 is set to Manual or there is no
payload ID, the 3GM will behave as if the input
video is in the RGB color space.
Note: In both cases, if payload ID is present and Dipswitch 8 is set to Auto, the 3GM uses the
video specifications in the payload ID.
4 INPUT:
Input signal
bit depth:
10 or 12-bit
10-Bit:
If Dipswitch 8 is set to Manual or there is no
payload ID, the 3GM will behave as if the input
video is 10-bit.
12-Bit:
If Dipswitch 8 is set to Manual or there is no
payload ID, the 3GM will behave as if the input
video is 12-bit.
NOTE: In both cases if payload ID is present and Dipswitch 8 is set to Auto, the 3GM uses the
video specifications in the payload ID.
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