GAM–Gamma Power Value
Defines the exponent used in a standard Power Law function.
This command is only available if the base gamma curve is set to Power Law function.
Commands
Command
Description
Values
GAM <exponent>
Sets the exponent for the Power Law function used for the gamma
transfer function. This command is only available if video
electronics are on. (Saved value)
1000 to 3000
2200 (Default)
GAM+MAXL
Adjusts the maximum screen luminance, used by the ITU-R
BT.1886 setting or when the GAM function is set to HDR/PQ (SMPTE
ST2084).
100 to 2000
1000 (Default)
GAM+MINL
Adjusts the minimum screen luminance, used by the ITU-R BT.1886
setting or when the GAM function is set to HDR/PQ (SMPTE
ST2084).
0 to 1000
10 (Default)
GAM+PQWL <value> Adjusts the PQ curve white level when the BGC–Gamma Function
command is set to 7.
50 to 2000
1000 (Default)
GAM+SLOP <value>
Defines the slope of the linear section at the bottom of the curve.
This command is only available if video electronics are on. (Saved
value)
1 to 100
1 (Default)
Examples
Set the base gamma curve function to 2.6:
(GAM 2600)
Set the base gamma curve function to 1.0:
(GAM 1000)
Related information
BGC–Gamma Function (on page 17)
GIO–General Purpose Input/Output
Controls or monitors the state of the general purpose inputs and outputs.
The pins reserved for 12V and ground cannot be read, set, or configured. For a mapping of the IO pins
to the physical connector pins, refer to the Christie User Guide (P/N: 020-103315-XX).
Commands
Command
Description
Values
GIO+CNFG?
Returns the direction for the individual pins.
—
Serial API commands
Christie Technical Reference–Serial Commands
35
020-103316-07 Rev. 1 (09-2022)
Copyright
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If printed, please recycle this document after use.
