Output freq, Red shift – ETC Desire Series v1.6.0 User Manual User Manual
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Operation
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Output Freq
Output Frequency is the frequency in Hz at which the LED array pulses, or blinks, as a
function of Pulse-Width Modulation (PWM). The frequency is adjustable in order to avoid
visible flicker on video and film. When altering the frequency in order to reduce noticeable
flicker on camera, often only a small change is required. The range is 920 to 1500 Hz in
increments of 10. The default value is 1200 Hz.
For high speed exposure or rolling shutter cameras, use the High 25K mode. This increases
the PWM to 25,000 Hz and will result in flicker-free operation in most circumstances. To
access the High 25K, press the up arrow after reaching 1500 Hz in the Output Freq: field.
Changing the frequency from the default value can have a slight impact on the smoothness,
or color-mix consistency, or both when dimming.
Step 1:
On the LED Settings menu, scroll to Output Freq.
Figure-4.12 Selecting Output Frequency on the LED Settings Menu.
Step 2:
Press [
] to select the value.
Step 3:
Press [
] or [
] to set the desired value.
Step 4:
Press [
].
Step 5:
When asked if you are sure, select Yes and press [
].
Red Shift
Red shift allows the fixture to match its dimming performance to that of a conventional
tungsten lamp. The fixture automatically changes its apparent White Point, or color
temperature, as a function of overall intensity. Red shift works with both white-light and
colored-light output settings. It is also known as amber drift and tungsten shift. Red shift is
available only in the HSI and RGB profiles. It is not available on Studio Daylight and Studio
Tungsten fixtures.
Step 1:
On the LED Settings menu, scroll to Red Shift.
Figure-4.13 Selecting Red Shift on the LED Settings Menu.
Step 2:
With Red Shift selected, press [
] to toggle between On and Off.
Step 3:
Press [
] or [
] to commit the option.
LED Settings
Output: Regulated
Curve: Standard
Output Freq
: 1200
Red Shift:
Off
White Point:
3200K
LED Settings
Output: Regulated
Curve: Standard
Output Freq:
1200
Red Shift
: Off
White Point:
3200K