Input Abcd (Ab) Lf-Hf Gain - Fluke ScopeMeter 190 II Series Service Manual

Fluke 190-062, -102, -104, -202, -204, -502, -504
Service Manual
Cal step
CL 0675
CL 0486
CL 0487
Table 5-16. Input D LF-HF Gain Calibration Points (Extra steps for 190-104/204, V10.4x firmware *)
Cal step
CL 0466
CL 0467
* Four channel instruments (190-104/204) with firmware V10.4x require the extra steps CL 466 and CL 467. Installed
firmware version can be checked via key sequence: USER key, F3 – VERSION & CAL, Software Version: ...

Input ABCD (AB) LF-HF Gain

The adjustment steps for channel C and D are only for the models
190-104 and 190-204.
To do the Input ABCD LF-HF Gain calibration:
1. Press
2. Connect the Test Tool to the 5502A as shown in Figure 5-15.
PM9093
A METER
2 CHANN. + METER
3. Set the 5502A to supply a 1 kHz square wave (SCOPE, MODE volt, SCOPE
Z 1 MΩ) to the first calibration point in Table 5-17.
5-36
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Table 5-15. Input D LF-HF Gain Calibration Points
UUT input signal
0.5 Vpp square wave, 1 kHz
0.62 Vpp sine wave, 50 kHz
0.62 Vpp sine wave
Fluke 190-204: 221 MHz
Fluke 190-104: 121 MHz
UUT input signal
124 mVpp sine wave, 50 kHz
124 mVpp sine wave
Fluke 190-204: 221 MHz
Fluke 190-104: 121 MHz
F2
to select the first calibration step in Table 5-17.
PM9092 PM9092
B A B C D
4 CHANNELS
Figure 5-15. Test Tool Input ABCD to 5502A SCOPE Output
SCOPE edge, 0.5 Vpp, 1 kHz
SCOPE levsine, 0.62 Vpp, 50 kHz
SCOPE levsine, 0.62 Vpp,
221 MHz
121 MHz
SCOPE levsine, 124 mVpp, 50 kHz
SCOPE levsine, 124 mVpp,
221 MHz
121 MHz
Note
PM9091
CONNECT TO CHANNEL A, B, C, D IN PARALLEL
NO 50 OHM TERMINATION
NORMAL SCOPE
FLUKE 5502A CALIBRATOR
5502A Setting
5502A Setting
Perf-Ver-C2.eps