Tektronix WVR6020, Technical Reference

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Speci fi cations
Table 27: Composite analog waveform vertical characteristics (Option CPS) (cont.)
Characteristic Performance requirement Reference information
Line Rate Tilt < 0.5%
Off Screen Recovery ≤ 0.5% variation in baseline of a Chroma
modulated pulse when positioned anywhere
on screen.
X1, X5, or any variable gain setting.
Table 28: Composite analog physical characteristics; composite input characteristics (Option CPS)
Characteristic Performance requirement Reference information
Formats supported
NTSC, NTSC no setup, and PAL, I, B, D,
G, H
Complies with RS170A & ITU-R BT.471. Manual or auto detect of input standard.
Internal Reference Proper horizontal and vertical
synchronization with a composite signal of
appropriate line and
fi eld rate.
Input Dynamic Range (typical) ± 6 dB range
Video Maximum Operating
Amplitude (typical) –1.8 V to +2.2 V, (all inputs) DC + peak AC.
Maximum Absolute Video Input
Voltage –6.0 V to +6.0 V (DC + peak AC).
Input Type Passive loop through 75 Ω compensated
DC Input Impedance 20 k Ω
Return Loss, typical Typically > 46 dB to 6 MHz; > 40 dB to
10 MHz.
Typically 35 dB with power off for standard
amplitude video.
Video Input Cross-talk Between
Channels ≥ 60 dB to 6 MHz.
Loop through Isolation ≥ 70 dB to 6 MHz.
DC Offset with Restore Off (typical) ≤ 10 mV Measured in full screen mode at x5 vertical
gain.
DC Restore Modes Fast, Slow, and Off modes. Slow has a typical bandwidth of 10 Hz, Fast
has a typical bandwidth of 500 Hz.
DC Restore Offset Error <2 mV Registration between back porch and
0 V graticule.
DC Offset between Inputs with
restore off (typical) <7 mV
DC Restore 50 and
60 Hz Attenuation
Fast Mode >95% attenuation
16 Waveform Rasterizers Speci fi cations and Performance Veri fi cation