DC power supply
DC Power Supply and Battery Operation
8
Installation Manual 1321.3937.02 ─ 02
Figure 2-5: DC connection
brown = +10 V to +28 V
blue = GND
3. Connect the DC cable to the voltage source. Check for right polarity.
2.3
Switching the instrument on and off
To switch on the instrument
The instrument is off but connected to the DC power supply.
1. Set the switch on the DC power supply to "I".
A green LED indicates that the DC power supply is ready for operation.
If overvoltage or undervoltage occurs, the DC power supply switches off auto-
matically. A red LED indicates the error state.
2. Press the [ON/OFF] key on the front panel of the instrument. A green LED
above the [ON/OFF] key indicates that the instrument is ready for operation.
To switch off the instrument
1. Press the [ON/OFF] key on the front panel of the instrument and wait until the
instrument has shut down.
2. Set the switch on the DC power supply to "0".
Switching the instrument on and off
