Fluke 190-062, -102, -104, -202, -204, -502, -504
Service Manual
4-14
Input A, B, C, D AC Voltage Accuracy Test (LF)
Note
The test steps for channel C and D are only for the models
190-104, 190-204, and 190-504.
This procedure tests the Volts ac accuracy with dc-coupled inputs up to 50 kHz.
The high frequencies are tested in sections,
Input A AC Voltage Accuracy (HF) &
Bandwidth Test
and
Input B AC Voltage Accuracy (HF) & Bandwidth Test
.
Warning
To prevent possible electrical shock, fire, or personal injury,
ensure that the calibrator is in standby mode before making any
connection between the calibrator and the Test Tool.
Dangerous voltages are present on the calibration source and
connection cables during these steps.
Proceed as follows to test the Input A, B, C, and D automatic scope ac Voltage
measurement accuracy:
1. Connect the Test Tool to the 5502A as shown in Figure 4-4.
2. Select the Test Tool setup:
a) Recall the created setup (
Creating a Standard Test Tool Setup
). Press
SAVE
,
F2
(
RECALL) and
select
SETUP
, press
ENTER
, select the setup
name, and press
ENTER
to recall the setup.
b) Press
A
, then press
F4
(
INPUT A OPTIONS
…).
c) Select
Attenuator:
Normal | Bandwidth: 10 kHz
or
20 kHz
for the available
setting in the ScopeMeter
(2 mV/d and 5 mV/d) or
| Bandwidth: 20 MHz
(other ranges).
d) Press
B
, then press
F4
(
INPUT B OPTIONS
…).
e) Select
Attenuator:
Normal | Bandwidth: 10 kHz
or
20 kHz
for the available
setting in the ScopeMeter
(2 mV/d and 5 mV/d) or
| Bandwidth: 20 MHz
(other ranges).
f) Press
C
, and then press
F4
(
INPUT C OPTIONS
…).
g) Select
Attenuator:
Normal | Bandwidth: 10 kHz
or
20 kHz
for the available
setting in the ScopeMeter
(2 mV/d and 5 mV/d) or
| Bandwidth: 20 MHz
(other ranges).
h) Press
D
, then press
F4
(
INPUT D OPTIONS
…).
i) Select
Attenuator:
Normal | Bandwidth: 10 kHz
or
20 kHz
for the available
setting in the ScopeMeter
(2 mV/d and 5 mV/d) or
| Bandwidth: 20 MHz
(other ranges).
j) Press
CLEAR
to clear the softkey menu and see the full 8-divisions display.
3. Press
SCOPE
.
4. Press
F2
(–
READING
…) and select with
F1
(–
READINGS)
and
the
:
Reading 1, on A, V ac
Reading 2, on B, V ac
Reading 3, on C, V ac
Reading 4, on D, V ac
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