Input C Lf-Hf Gain - Fluke ScopeMeter 190 II Series Service Manual

Fluke 190-062, -102, -104, -202, -204, -502, -504
Service Manual

Input C LF-HF Gain

Sections Input C LF-HF Gain and Input D LF-HF Gain are for 4-channel
ScopeMeters (190-104, 190-204, and 190-504 models). For 2-channel models,
proceed to the Input AB Position section.
To do the Input C LF-HF Gain calibration on 190-104, 190-204, and 190-504
models:
1. Connect Ch. C of the Test Tool to the 5502A as shown in Figure 5-5.
2. The display must show step CL 0694 (Pos C Fast). If it does not, then press
F1
A B
4 CHANNELS
3. Set the 5502A SCOPE output to source the signal required for the first
calibration point in Table 5-3.
4. Set the 5502A to operate (OPR) or standby (STBY) as indicated.
5. Press
6. Wait until the display shows calibration status
7. Press
calibration point signal, and start the calibration.
Continue through all calibration points of Table 5-3.
8. When you are finished, set the 5502A to Standby.
9. Continue at the Input D LF-HF Gain section.
5-16
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or F2 to select the first calibration step in Table 5-3.
PM9585 - 50 OHM
For 190-502 and -504
use only TRM50!
USE 50 OHM
TERMINATION
C D
NORMAL
FLUKE 5502A CALIBRATOR
Figure 5-5. 5502A SCOPE Output to Test Tool Input C
F3
to start the calibration.
F2
to select the next calibration step, set the 5502A to the next
PM9091
SCOPE
.
:READY
Perf-Ver-F2.eps