Performance Verification
WFM90D and WFM91D ServiceManual 4-3
Table4- 1: Summary verification procedure (Cont.)
Procedure Page#Procedurerequirement
Vectorphase stability Phase Shift wi th SubcarrierFrequency Change from FSC to FSC 50 Hz
(FSC 10 Hz PAL):2°. Phase Shift with Burst Am plitude Change from
Nominal to 6 dB: 2°. Phase Shift with Variable Gain Control Varied
from +3 dB to --6dB: 1°.
4--11
Chrominance bandwidth Chrominance Bandwidth: Upper --3dB Point: FSC + 500 kHz, 100 kHz.
Lower --3dB Point: FSC -- 500 kHz, 100 kHz.
4--12
Audio gain and frequency response Measurement Accuracy: 0.5 dB at 1 kHz. Frequency Response: 0.5 dB
from 50 Hz to 20 kHz.
4--13
Digital input gain accuracy 2% for 1 V encoded video
Digital input frequency response 4% from 50 KHz to 4.5 MHz
Digital input frequency response X5 5%from 50 KHz to 4.5 M Hz
Equipment Required
Table4--2 lists the required equipment andaccessory items to perform th e
performance verification procedures. Minimum equipment specificationsare
followed by an example of equipmentthat meet these specifications.
An accuracy ratio of 4:1 or better for the warrant ed specifications will be
obtained using the equipmentrecommended in Table 4--2with the following
exceptions:
HAudio Amplitude: 2.5:1
HAudio Flatness: 2.5:1
Table4- 2: Equipment required for performance verification
Equipment description Minimum requirements Equipment example
Analog television test signal
generator
Colort est signals for the television standard of
the monitor to be tested: color bar signal, pulse
andbar; wi th 2T pulse, 2T bar,and modulat ed
pulse, field square wave signal, and black burst
signal
NTSC: Tektronix14102TV Test Signal Generator
with Option AA and Option AB (modified SPG2
andTSG7), TSG3, andTSG5
PAL:Tektronix 14112TV TestSignal Generator
with Option AA and Option AB (modified SPG12
andTSG17), TSG13, andTSG15
Serial digital television test
signal generator
Colort est signals for the television standard of
the monitor to be tested: color bar signal, pulse
andbar; wi th 2T pulse, 2T bar,modulat ed pulse,
andl ine sweep.
TSG601Handhel d Serial Component Signal
Generator
Leveled sine wave generator Output Level Range: --11.55dBm (200 mV) to
0.43 dBm (800 mV);
Frequency:50 kHz t o 10 MHz
TektronixSG 5033Leveled Sine Wave Generator