11
LANGER
EMV-Technik
DE-01728 Bannewitz
[email protected]
www.langer-emv.com
OB 100 set
Figure 2: Opto-Box 100 in LIN mode, measurement set-up for measurement during development
8.3. Voltage Supply
There are 4 possibilities to supply the Opto-Box 100 with voltage. In detail these are:
a) The DC8 socket marked 12V IN at the lower left edge of the device.
The supplied external plug-in power supply can be connected here. This operating mode
should be used if the Opto-Box 100 is operated outside the measuring hall/measuring
booth. The Opto-Box 100 is supplied via the power supply unit and the
internal batteries are charged at the same time.
b) PIN 9 (12V IN) and PIN 6 or PIN 3 (GND) of the D-SUB connector on the top of the device.
c) The build-in rechargeable batteries.
The Opto-Box 100 contains 4 commercially available NiMh batteries of type AA, which supply the
Opto-Box if no other voltage is applied. The state of charge is monitored. If the voltage drops below
4.7 V, the red LED "Low Bat" lights up.
If the Opto-Box 100 is supplied via a plug-in power supply unit at the DC8 socket, the batteries are
charged independently of the operating state of the Opto-Box. The yellow "Charging" LED lights
up. When the charging end voltage is reached, charging is interrupted and the "Charging" LED is
switched off. The batteries can remain in the device.
Note: The rechargeable batteries are only charged during operation via plug-in power
supply, but not during operation at 12 V via D-SUB plug or via laboratory plug.
The set charging current corresponds to approximately three times the maximum operating current
in battery mode. When using two Opto-Boxes in pairs inside and outside the measuring
hall/measuring booth, it is thus possible to exchange the Opto-Boxes at any time if one Opto-Box is
discharged and the second Opto-Box is permanently operated via plug-in power supply.
The built-in rechargeable batteries can be replaced. To do this, the Opto-Box must be switched off
and the two screws in the middle on the underside of the unit must be unscrewed (Figure 3). After
removing the upper part of the housing, the batteries are accessible.
