Fluke 5502A, Руководство оператора

Страница: 292 / 378

5502A
Operators Manual
9-28
1. Set the oscilloscope for 1 M
Ω
input impedance. Note that input capacitance tests
cannot be done with 50
Ω
input impedance.
2. Use the MEASURE softkey to select “cap”.
3. With the output cable connected to the Calibrator but not connected to the
oscilloscope, push the SET OFFSET softkey to cancel stray capacitances.
4. Connect the output cable to Channel 1 on the oscilloscope.
5. Push

to initiate the measurement.
Test Overload Protection

Caution
This test examines the power handling capability of the 50
Ω
input of your oscilloscope. Before proceeding, ensure that the
power rating of your oscilloscope can handle the voltages and
currents that this test can output. Failing to do so could
damage your oscilloscope.
gjh066.eps
You can push the MODE softkey to move through the functions in the sequence shown,
or you can push

to return directly to the OTHER modes menu.
Each option in the OVERLD menu is given below.
•
OUTPUT @ SCOPE Shows the location of the signal output.
•
UUTTRIP Shows test results. “NO” shows if the overload protection did not trip
during the selected time limit. A value in seconds shows (for example, “4.1s”) if the
overload protection has tripped during the time limit.
•
T LIMIT Shows the selected time limit to apply the output value. Push this softkey
to key in or edit a different time limit (1s to 60s.)
•
OUT VAL Shows the output voltage type. You can select DC or AC and a value
ranging from 5 V to 9 V (shown in Output Display). Key in or edit this value.
•
MODE Shows you are in OVERLD (Overload) mode. Use the softkey to change
modes and open menus for other oscilloscope calibration modes.
Default overload settings are +5.000 V and DC.
You can also set the overload time limit with

, INSTMT SETUP softkey, OTHER
SETUP softkey, TLIMDEF softkey, then choose 1s to 60s.