User Manual

- 9 … 12 V DC (LDP-235 / 240 LED) to the supply input (9 V
battery).
Please consider the polarity.
Caution!
A simultaneously supply of the module and measuring of the
supply voltage is not possible.
Operation of several modules with same power supply is not
possible (one module = one power supply, i. e. 9 V battery).
4.1. Changing the voltage divider
a) The voltage in the following chart can be added and the
jumper plug accordingly displayed if required (resistors
are optional components).
LDP-135 / 140 LCD:
Max.
measuring
voltage
Required voltage divider
Decimal point
200 mV
Ra: open (factory setting)
RB: 0 Ω
Short P3
2 V
Ra: 1 M
Rb: 9 M
Short P1
20 V
Ra: 100 k
Rb: 9,9 M
Short P2
200 V
Ra: 10 k
Rb: 9,99 M
Short P3
500 V
Ra: 1 k
Rb: 9,999 M
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