Photocell Sensitivity; Disabling The Photocell; Photocell; Ir Power Adjust - Videotec IR10BD Bedienungslanleitung

7.2.2 Photocell sensitivity

Fig. 04
To adjust photocell sensitivity, first remove the
sealing cap. Then adjust the potentiometer to
turn the lamp on when the lighting conditions
are lighter or darker. Adjust further clockwise
to make the lamp turn on when it's lighter
and counter clockwise when it's darker.

7.2.3 Disabling the photocell

To disable the photocell adjust the sensitivity fully
clockwise. This should make the lamp turn on all the
time unless the telemetry input is closed circuit.

7.2.4 Photocell

The photocell is designed to automatically switch
the lamps ON at dusk and turn OFF at dawn. A high
degree of hysterisis is incorporated to avoid on/
off switching in marginal light conditions. The unit
is factory set at approximately 20 lux ON and 70
lux OFF, but can be adjusted using the photocell.
6

7.2.5 IR power adjust

Fig. 05
To adjust the IR power, first unscrew the sealing
cap. Then adjust the power potentiometer
clockwise to increase the power and counter
clockwise to turn the IR power down.
h Once all adjustments have been
carried out, make sure that the plugs
are properly closed so as to ensure
the hermetic seal of the product.

7.2.6 Remote switching

The lamp may be activated remotely by a volt-free
contact latched across the telemetry connector.

7.2.7 Achievable distances

Illumination distance achievable depend on the Infra-
Red characteristics of the CCD camera and lens used.
PRODuCT BEAM
CODE ANGLE
IR10BD 10°
IR30BD 30°
IR60BD
60°
Tab. 01 Achievable distance with CCD ½" B/W high sensitive
cameras for night vision, ratio S/N greater than
20dB and minimum F1.4 lens aperture. The typical
distance of the subject to illuminate is in function of
the reflection coefficient of the illuminated scene.
Lo Hi
ACHIEVABLE
HOV
DISTANCE
220m/720ft 40m/125ft
110m/360ft 60m/196ft
70m/230ft 80m/265ft