Tektronix WFM7020 Technical Reference

Specifications
Table 21: Audio Bar and Lissajous/Surround Display (cont.)
Characteristic Performance requirement Reference inform ation
Manual Scaling When AGC is off, level at perimeter of display
follows Peak Program Level on Bar display
Surround Display Frequency
Weighting Filter
Frequency weighting c an be A-weighting or
Linear (Flat Response) as described in IEC
651
Dominant sound indicator can be turned on
and off
Table 22: AV Delay display (Option AVD)
Charact
eristic
Perform
ance requirement
Referen
ce inform ation
Audio Video Delay measurement
Display
s the delay of embedded audio
relative to SDI v ideo. Shows delay in
milliseconds and in fields. Requires SDI
signal
from TG700 in AV Timing mode.
Measurement Range
At leas
t –150 to +150 fields; a negative
reading indicates audio is advanced with
respect to video; a positive reading indicates
it is d
elayed. Range depends on the
repetition rate of the test signal. Specification
applies for TG700 AV Timing mode, which
has a
nominal 5 second repetition rate.
Measurement Accuracy
±1vi
deo field
Table 23: AES Audio Inputs
Characteristic Performance requirement Reference inform ation
Inputs 2 sets with 8 channels each, 32-192 kHz,
24 bit, meets requirements of AES-3ID and
SMPTE 276M-1995
Input Connector BNC, terminated, unbalanced
Input Impedance
75 Ω
Input Return Loss Typically better than 30 dB to 24 MHz
Input A has passive terminations, so they
are the same with power on or off. Input B
has active terminations that go to a higher
impedance with the power off
Input Amplitude Range 0.1 V to 2 V peak-to-peak
Input Sample Rate 32k to 192k samples/sec
Input Lock Frequency Range
>± 5% . If input sample rate changes more
than 5%, then the instrument may search
again for a new lock point. Typically stays
locked to 12.5%
Waveform Monitors Specifications and P erformance Verification 21

Tektronix WFM7020 Specifications

General

Brand	Tektronix
Model	WFM7020
Category	Monitor
Language	English