17When the illumination of the object is insufficient, theelectrical gain can be boosted as described below.Memo :● When the [FULL AUTO] or [ALC + EEI] is ON, the gainbecomes ALC. However, the Gain is Lolux in the Loluxmode. The gain cannot be varied in this mode.1 The gain is boosted according to the position of the[GAIN-STEP] switch as shown below(The gain boost values shown below are factorysettings.)The gain boost values of these switch positions can bemodified 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 seton this unit.● A-3 dBB is not displayed when connected to GY-HM790series.(A Page 29 [Operable Camera Features])2 When the [GAIN] control knob is pressed, the VariableGain mode starts and the [GAIN] light is turned onMemo :● The gain value set in the Variable Gain mode is applied inpriority over the gain switch setting.● This function is unavailable when connected toGY-HM790 series.3 The gain can be fine adjusted between 0.1dB and18dB in 0.1dB steps in the Variable Gain mode. Also, inthis mode, the maximum gain value can be set to A9 dBB,A12 dBB or A18 dBBWhen the variation step is set to A1.0 dBB, the gain can bevaried from 1dB to 18dB in 1dB steps.( A Page 25 [V. GAIN STEP] and [V. GAIN MAX])The camera lens iris can be adjusted from theRM-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 iscontrolled 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 litby pressing the button, the iris control is set to Manualmode, in which the iris level can be controlled using the[IRIS-CLOSE OPEN] controlMemo :● Set [IRIS MODE] switch of lens to side AAB.● When [ALC + EEI] or [FULL AUTO] is AONB, the [IRIS-AUTO/MANU] button is forced to the Auto mode.( A Consult the [INSTRUCTION MANUAL] of the camerain use.)Gain AdjustmentLOW : 0 dB (No gain boost)MID : 9 dB (Gain approximately tripled.)HIGH : 18 dB (Gain approximately octupled.)SHUTTERGAINF3 MENU/SHUTTER GAIN PAINT AUTOBRW.BALWHITESTEPSHUTTERMENU PUSH-ONDOWN UPVARIABLEPUSH-ONHIGHLOWBAPRESETMIDDOWN UPF49dB[GAIN] control knob[GAIN] lightGain display[GAIN-STEP] switchIris AdjustmentWHITE MASTER BLACK IRISPPAINTRAUTOBHW.BALPOWERAUTOMANUBACLOSE OPENPRESETWMIDREMOTE CONTROL UNIT RM-HP790[IRIS-CLOSE OPEN] control knob[IRIS-AUTO/MANU] buttonW T[IRIS MODE] switch