Gain Adjustment; Iris Adjustment - JVC LST1153-001A Instruction Manual

Gain Adjustment

When the illumination of the object is insufficient, the
electrical gain can be boosted as described below.
Memo :
● When the [FULL AUTO] or [ALC + EEI] is ON, the gain
becomes ALC. However, the Gain is Lolux in the Lolux
mode. The gain cannot be varied in this mode.
MENU/SHUTTER
F3
SHUTTER
9dB
F4 MENU
GAIN
Gain display
1
The gain is boosted according to the position of the
[GAIN-STEP] switch as shown below
(The gain boost values shown below are factory
settings.)
LOW : 0 dB (No gain boost)
MID : 9 dB (Gain approximately tripled.)
HIGH : 18 dB (Gain approximately octupled.)
The gain boost values of these switch positions can be
modified to the following values.
(Available values: -3 dB, 0 dB, 3 dB, 6 dB, 9 dB, 12 dB, 15dB,
18 dB)
( A Page 25 [GAIN LOW], [GAIN MID] and [GAIN HIGH])
Memo :
● Values that are not available on the camera cannot be set
on this unit.
● -3 dB is not displayed when connected to GY-HM790
series.
(A Page 29 [Operable Camera Features])
2
When the [GAIN] control knob is pressed, the Variable
Gain mode starts and the [GAIN] light is turned on
Memo :
● The gain value set in the Variable Gain mode is applied in
priority over the gain switch setting.
● This function is unavailable when connected to
GY-HM790 series.
3
The gain can be fine adjusted between 0.1dB and
18dB in 0.1dB steps in the Variable Gain mode. Also, in
this mode, the maximum gain value can be set to 9 dB ,
12 dB or 18 dB
When the variation step is set to 1.0 dB , the gain can be
varied from 1dB to 18dB in 1dB steps.
( A Page 25 [V. GAIN STEP] and [V. GAIN MAX])
[GAIN] light
GAIN WHITE
PAINT AUTO
STEP W.BAL
HIGH
SHUTTER VARIABLE MID
PUSH-ON PUSH-ON R B
LOW PRESET
DOWN UP DOWN UP
[GAIN-STEP] switch
[GAIN] control knob

Iris Adjustment

The camera lens iris can be adjusted from the
RM-HP790DU/RM-HP790DE.
Memo :
● When the light in the [IRIS-AUTO/MANU] button is not lit,
the iris control is set to Auto mode, in which the iris level is
controlled automatically according to the light intensity.
The auto iris value cannot be adjusted with the [IRIS-
CLOSE OPEN] control knob.
1
When the light in the [IRIS-AUTO/MANU] button is lit
by pressing the button, the iris control is set to Manual
mode, in which the iris level can be controlled using the
B
A
[IRIS-CLOSE OPEN] control
PAINT WHITE AUTO
P
H
MID
R B
W
Memo :
● Set [IRIS MODE] switch of lens to side A .
● When [ALC + EEI] or [FULL AUTO] is ON , the [IRIS-
AUTO/MANU] button is forced to the Auto mode.
( A Consult the [INSTRUCTION MANUAL] of the camera
in use.)
[IRIS-CLOSE OPEN] control knob
REMOTE CONTROL UNIT RM-HP790
POWER
MASTER BLACK IRIS
W.BAL
B
A
AUTO
MANU
PRESET
CLOSE OPEN
[IRIS-AUTO/MANU] button
W T
[IRIS MODE] switch