Atec Tektronix-VM100-VM101 User Manual
Page 4
Appendix A: Specifications
A–4
VM 100 & VM101 User Manual
Table A–3: Measurement accuracy (cont.)
Category
1
Description
Hum
2
REQ:
±
1.0% for hum
≤
4.0%
±
2.0% for hum >4.0% and <15.0%
RI: Typically
±
0.5% for hum
≤
4.0%
Signal-to-Noise Ratio
(Weighted or Flat)
REQ:
±
1 dB, 28 dB to <45 dB
±
2 dB, 45 dB to <60 dB
±
3 dB, 60 dB to 67 dB (WGT)
RI:
VM100: Noise is weighted with EIA
RS-250-B 5 MHz weighted noise
filter. (Tektronix part number
015-0215-00 equivalent.)
VM101: Noise is weighted with
CCIR 567 weighted noise filter
Group Delay
REQ:
<
20 ns
RI: 50 kHz to 4.8 MHz, within the
bandwidth of the signal under test
Sync Amplitude
2
REQ:
<
1.0%
Burst Amplitude
REQ:
<
1.0%
Bar Amplitude
REQ:
<
1.0%
Luminance Nonlinearity
REQ:
<
1.0%
1
All tests are performed with AVG enabled. Processing time for each
measurement is a function of the signal-to-noise ratio.
2
The hum and sync amplitude measurements are inaccurate in the presence
of Sound In Sync (SIS) signals.