Simpson 460 4 Series - General Functional Checks; DC Voltage Measurements

b.
Operation
cord plug into a 3-wire power outlet which conforms to the
power requirements of the Instrument as marked on the rear
panel, and to the latest National Electrical Code.
The battery is being charged at full rate (400mA).
NOTE: If the battery test indicates a voltage below
+4.7 volts, set the POWER switch in the OFF position
for at least 15 minutes before operating.
4.4 GENERAL FUNCTIONAL CHECK:
. Review the safety precautions in paragraph 4.2.
. Connect the black test lead to the COMMON jack and the
red test lead to the У-О jack. Short the test leads together.
. Depress and set the HI OHMS function and “2” range switches.
. Open the test leads. The numerical display will be flashing in
the out-of-range condition.
. Short the test leads together. The display reading will return
to 000 +1 digit.
If difficulty is encountered in the above steps, see Section VII.
5 DC VOLTAGE MEASUREMENTS:
. Review the safety precautions in paragraph 4.2.
. Connect input test leads to the У-О and COMMON terminals.
. Depress DCV function switch.
. Depress the appropriate voltage range switch as indicated in
Table 4-1. If the voltage being measured is unknown, begin
with the 1000 range VDC switch.
. Turn off the power to the device or circuit under test and dis-
charge all capacitors.
Connect test leads to the circuit being measured.
4-4