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Adjustment Procedures
5–2
WFM 90 and WFM 91 Service Manual
Equipment Required
Table 5–2 lists the required equipment and accessory items to perform the
adjustment procedures. Minimum equipment specifications are followed by an
example of equipment that meet these specifications.
Table 5–2: Equipment required for performance verification
Equipment Description Minimum Requirements Equipment Example
Television test signal generator 75% color bar test signal for the television
standard of the monitor to be tested
NTSC: Tektronix TSG 100;
PAL: Tektronix TSG 111
Leveled sine wave generator Output Level Range: –11.55 dBm (200 mV) to
0.43 dBm (800 mV);
Frequency: 50 kHz to 10 MHz
Tektronix SG 503
1
Leveled Sine Wave Generator
Function generator Range: 0.1 to 5 Vpp when loaded by 75 W,
10 Vpp when unloaded;
Frequency: 50 kHz to 10 MHz.
Tektronix FG 503
1
Function Generator
Audio generator Amplitude Range: –10 dBu to 8 dBu;
Frequency: 1 kHz to 50 kHz
Tektronix ASG 100 Audio Signal Generator
Voltmeter Range: 0 VDC to u100 VDC;
Accuracy: "0.1%
Tektronix DM 504A
1
Digital Multimeter
Frequency counter Range: 10 Hz to 10 MHz;
Accuracy: "0.001%
Tektronix DC 503A
1
Universal Counter
Video amplitude calibrator
(VAC)
Signal: Adjustable square wave 0.0 mVpp to
999.9 mVpp; Resolution: 0.1 mV; Accuracy:
0.05%; Frequency: Approximately 270 Hz
Tektronix part number 067-0916-00
1
Peak-to-peak detector Input Signal Range: 0.25 Vpp to 1.0 Vpp;
Flatness: "0.2% 50 kHz to 10 MHz;
Input Impedance: 75 W
Tektronix part number 015-0408-00 (includes
peak-to-peak detector head, Tektronix part
number 015-0413-00)
1
75 W terminator One required; feed-through type Tektronix part number 011-0103-02
75 W coaxial cable Three cables required, male-to-male BNC
connectors
Tektronix part number 012-0159-00 (42-inch)
Tektronix part number 012-1339-00 (24-inch)
50 W coaxial cable 1% precision, male-to-male BNC connectors Tektronix part number 012-0482-00 (36-inch)
Dual input coupler Matched BNC cable-T for making phase
comparisons between two inputs; Matched
length of the two arms within "0.1 inch
Tektronix part number 067-0525-02
Audio cable XLR female to XLR male Switchcraft part number SC3XXJ
50 W-to-75 W minimum loss
attenuator
Impedance: 50 W-to-75 W; Tolerance: "0.5 dB;
Frequency: 100 MHz
Tektronix part number 011-0057-00
BNC female to BNC female
connector
Tektronix part number 103-0028-00
BNC female to dual banana
adapter
Tektronix part number 103-0090-00
1
Requires a Tektronix TM 500-Series or TM 5000-Series Power Module Mainframe.