1 reading the edid, 1 reading the edid from pc out 1, 2 reading the edid from the hdmi outputs – Kramer Electronics VM-73 User Manual
Page 11: Reading the edid, Section

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VM-73 - Connecting the VM-73
5.1
Reading the EDID
The VM-73 PC input directly reads the EDID from the PC OUT 1 output (see
), and allows the HDMI input to read the EDID of the HDMI outputs
(see
.
5.1.1
Reading the EDID from PC OUT 1
The EDID information of the output connected to PC OUT 1 goes directly to the
PC input via pins 12 and 15 of the 15-pin HD connectors.
5.1.2
Reading the EDID from the HDMI Outputs
The EDID is always acquired from the highest priority output (OUT 1 being the
highest and OUT 3 the lowest).
For example, if all three outputs are connected, the EDID will be read from OUT 1. If OUT 2
and OUT 3 are connected, the EDID will be read from OUT 2.
You can acquire the EDID by disconnecting (for 2 seconds) and then reconnecting
the HDMI input.
To read the EDID (from OUT 2, for example), do the following:
1. Connect an acceptor to OUT 2 (OUT 3 can also be connected, but
OUT 1 cannot).
2. Turn ON the POWER.
3. Disconnect the input for 2 seconds and then reconnect it.
The input reads the OUT 2 EDID information.
If you connect OUT 1, the EDID still remains that of OUT 2.
To acquire the default EDID, disconnect all the HDMI outputs, disconnect the
HDMI input for 2 seconds and then reconnect it.