OSEE IRS Series User Manual page 19

in "Active".
The original PGM output Tally changes to the color in "Inactivea".
The PST channel "Active" output remains unchanged.
3. Tally Description
The TAKE key has two states: "Active" and "Inactivea".
The Tally color is yellow in "Active".
The Tally color is green in "Inactivea".
BACKUP key
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1. Key Description
It is BACKUP bypass signal output select key.
Manually switch the BACKUP bypass signal to the PGM output by pressing this key.
The key has two states: "Active" and "Inactivea".
In Active, the PGM output channel is the BACKUP bypass singal.
In Inactivea, the PGM output channel is not the BACKUP bypass singal.
2. Instructions
Pressing BACKUP key will trigger the following actions:

BACKUP key status changes to "Active".
The Tally color of Backup key, changes from "Inactivea" to "Active".
The original PGM output channel state changes from "Active" to "Inactivea".
Pressing the key in "Inactivea", will not trigger any action operations.It would return to the

pristine PGM channel.
3. Tally Description
The BACKUP key has two states: "Active" and "Inactivea".
The Tally color is yellow in "Active".
The Tally color is green in "Inactivea".
PGM OUT 1 / PGM OUT2

1. Key Description
When the PGM/PST panel is applied to the IRS1604 matrix switcher, selected PGM OUT 1,
the DEST 1 would be set as PGM channel and the DEST 2 would be set as PST channel.
Select the PGM OUT 2, 3 and 4 channels would be PGM/PST.
This button would make the 1604 matrix switcher as two 1602.
This button has two states:
"Active": The panel controls the corresponding bus signal of the current PGMOUT.
"Inactivea": The panel doesn't control the corresponding bus signal of the current PGMOUT.
2. Instructions
Pressing PGM OUT 1/2 key in "Inactivea", will trigger the following actions:

The matrix switcher PGM/PST output bus signal is the corresponding to the T signal of
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