Atec Tektronix-VM100-VM101 Manual do Utilizador descarregar pdf (Página 4)

Appendix A: Specifications

A–4

VM100 & VM101 User Manual

Table A–3: Measurement accuracy (cont.)

Category

Description

Hum

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

REQ: <1.0%

Burst Amplitude REQ: <1.0%

Bar Amplitude REQ: <1.0%

Luminance Nonlinearity REQ: <1.0%

All tests are performed with AVG enabled. Processing time for each

measurement is a function of the signal-to-noise ratio.

The hum and sync amplitude measurements are inaccurate in the presence

of Sound In Sync (SIS) signals.

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