WAT-910BD H/W MANUAL
4.3 DC IRIS LENS CONTROL
This connector is used to connect a DC IRIS LENS.
When connecting the lens, be careful to wire after
confirming the pin assignments.
(1) Wiring to the lens
Pin assignments of JEITA standard iris connector
and J3 connector terminal have one-to-one
correspondence as following.
(2) Adjustment method of the lens iris
The lens iris is adjusted with next steps.
STEP1: Fix the shutter speed by using OSD menu.(SETUP->EXPOSURE->SHUTTER)
Recommended setting of SHUTTER is either OFF(EIA:1/60,CCIR:1/50) or FL(EIA:1/100,CCIR:1/120).
STEP2: Turn off "SENSE UP" function.
STEP3: Turn off "AGC" function.
Set "GAIN" to the minimum value (6dB) by using "MANUAL GAIN" menu.
STEP4: Return to the EXPOSURE menu, by adjusting the VR1, set the proper lens iris.
STEP5: If the adjustment of lens iris is correct, when AGC is switched to LOW from OFF, the video signal
will be a little brighter.
STEP5: When switching to AGC LOW from OFF, and the video screen is to be slightly
STEP1,2: OSD SETTINGS
*4
*3
*4
brighter, it is the proper result of lens iris adjustment.
(Fig.4-5) Pin assignments of DC IRIS connector
Sense+
STEP3: MANUAL GAIN SETTING
STEP4: IRIS ADJUSTMENT
Drive-
*1
*2
*3
J3
*2
Sense-
female IRIS connector(JEITA spec.)
*1
Pin Name
②
Parts Shape(Pin No.)
③
④
Drive+
①
J3: IRIS Connector(for DC IRIS LENS)
VR1: Adjustment VR(for DC IRIS LENS)
① ② ③ ④
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