Dc Voltage Output Noise Test Setup - Fluke 5700A Series Service Manual

5700A/5720A Series II Calibrator
Service Manual
2. Set the Oscilloscope Differential Amplifier controls as shown below.
3. Set the Oscilloscope Time/Div for 2 ms.
4. Set the rms voltmeter range to 1V.
5. Set the Calibrator to 2.2V dc, operate. Verify that the reading on the rms voltmeter is
6. Repeat the above process for the remaining tabulated settings shown in Table
7. Press RESET on the Calibrator and disconnect the test configuration.
3-44
CALIBRATOR
(UUT)
HI
LO
GND
GRD
SHIELDED
TWISTED PAIR
3' APPROX
GR BANANA PLUGS
SHIELDED TWISTED PAIR CABLE DETAIL
Figure 3-19. DC Voltage Output Noise Test Setup
Low Frequency -3 dB
High Frequency -3 dB
Input Coupling
Volts/Div
less than 150 mV.
This test assumes that the amplifier plug-in and scope have a gain equal
to 0.5V divided by the input/div. setting, which in the above case is 1x10
3-49; verify that the rms meter indicates less than the amount shown for each
required output level.
OSCILLOSCOPE
MAINFRAME*
7A22
VERTICAL
PLUG-IN
OUTPUT
COAX
CLIP LEADS
BNC
* OSCILLOSCOPE AND AC DIFFERENTIAL
VOLTMETER SHOULD BE ISOLATED FROM
THE POWER LINE GROUND.
10 Hz
10 kHz
AC (both inputs)
50 µV (Var. to Cal.)
NOTE
TRUE RMS
VOLTMETER
F3-15.EPS
4
.