Low-Battery Test - Insulation Function - Fluke 1587 FC Calibration Manual

1587 FC/1587/1577
Calibration Manual
7. Turn the rotary switch to OFF to reset the display.
Power Supply

Low-Battery Test - INSULATION Function

The following procedure verifies the accuracy of the low-battery indicator ()
during insulation operation.
To avoid shock hazard DO NOT press  during the
following procedure.
1. Remove the batteries from the battery compartment.
2. Connect a 6-volt adjustable Power Supply between the positive and negative
3. Set the Power Supply output to 6 V, and turn the rotary switch to
4. Slowly turn the Power Supply output down while observing the display on the
5. Continue to reduce the Power Supply output while observing the display on
 will appear in the lower display.  will still appear in the
prinmary display when the supply reaches 3.5 V just as it does in
DMM functions.
6. Turn the rotary switch to OFF to reset the display.
7. Remove the Power Supply, and install the batteries and the battery door.
28
UUT (Rear)
6.0 Vdc
A
Figure 9. Low-Battery Test Connections
battery terminals of the UUT as shown in Figure 9-A.
INSULATION.
UUT. Verify that the low-battery indicator () appears when the voltage is
at 5.2 V
the UUT. Verify that  appears on the display when the supply voltage
reaches 4.0 V.
Power Supply
XWWarning
Note
UUT (Front)
ebp08f.eps