Tektronix VM700T, Руководство пользователя

Страница: 119 / 138

Appendix B: Performance Verification
B- 2
VM700T Option 01 (NTSC) & Option 11 (PAL) User Manual
NOTE
. The measurement set requires a 20 minute warm-up period before starting
the verification procedures.
Run the diagnostics while you let the measurement set warm up for 20 minutes
before starting the verification checks. The diagnostics can be looped as long as
desired to more rigorously check for intermittent errors. Use the Abort Diag-
nostic soft key to halt diagnostic looping. Return to the Configure menu and
check the Diagnostic Errors file for new errors.
Test Equipment Required
The test equipment to use for performing the verification procedures is shown in
Table B--1. Test equipment suggestions for use in doing the verification
procedure are given in the example column. The examples given are based on the
test equipment that many customers and the Tektronix service centers have
installed for supporting the VM700 family of video measurement sets. Substitute
test equipment may be used if available. Refer to the Minimum Specification
column to determine the key specifications needed to verify the accuracy of the
VM700T Video Measurement Set. If you do not have the required test equip-
ment, you can return your instrument to a Tektronix service center for the
accuracy verification.
Table B- 1:
Test equipment required for verification
Test equipment Minimum specification Purpose Example
Video amplitude calibrator Square wave 0.0 mV to
999.9 mV peak; accuracy
0.05%, resolution 0.1 mV Reference standard for
amplitude verification Tektronix 067-0916-00 (not
currently available for
purchase)
1
Leveled sine-wave generator 75
Ω
output impedance;
output flat within ± 0.025 dB
( ± 0.3%) to 6 MHz
Measure sine wave, check
filter flatness Hewlett-Packard 3336C Sine-
wave generator with option
005
2
Television signal generator NTSC, full field and burst
capability, accurate to
± 1 Hz
NTSC test signal source Tektronix TSG-170A or equiva-
lent
Television signal generator PAL, full field and burst capa-
bility, accurate to
±
1 Hz
PAL test signal source Tektronix TSG-271 or equiva-
lent
Coaxial cable, BNC connectors 75
Ω
impedance, high-quality
noise free; 1-meter length
Signal interconnections Tektronix part number
012-0074-00
Termination 75
Ω
precision, BNC connec-
tors
Signal termination Tektronix part number
011-0102-01
1
The example amplitude calibrator requires a TEGAM TM500 or TM5000 series power module.
2
The flatness accuracy required of the leveled sine-wave generator is only to the bandwidth needed to perform the
measurement set verification and adjustments. It is not specified to be that flat over the entire bandwidth of the generator.
Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com