Tektronix WFM 601A, Service Manual

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Specifications
1–4
WFM 601A, WFM 601E, & WFM 601M Service Manual
Table 1–1: Electrical specifications (cont.)
Characteristic Reference information Performance requirement
Loop-through Input Isolation
50 dB to 300 MHz
Serial Receiver Equalization Range Proper operation with 19 dB loss
at 135 MHz using coaxial cable
having 1/
√
F loss characteristics.
800 mV launch amplitude and 200
meters (655 feet) of Belden 8281
coaxial cable
Serial Video Output (follows SER A/B
channel selection)
Format 270 Mbit/s component; complies with SMPTE
259M and CCIR 656
Output Level
800 mV p-p 10% into 75
W
load
Internal adjustment can change output to less than
600 mV and greater than 1000 mV
Return Loss
15 dB 1–270 MHz
Eye Pattern Display
(WFM 601E, WFM 601M)
Type Equivalent time sampler
Bandwidth 50 kHz to 450 MHz: –3 dB to
+1 dB Low frequency –3 dB point is 500 Hz
Rise Time 500 ps (20-80%), 775 ps (10-90%)
Aberrations < 10%, 800 mV step
Time Base Jitter < 200 ps peak-to-peak
Jitter Attenuation
10 Hz Clock Bandwidth < 10% for frequencies > 20 Hz. –3 dB at
approximately 10 Hz
100 Hz Clock Bandwidth < 10% for frequencies > 300 Hz. –3 dB at
approximately 100 Hz
1 kHz Clock Bandwidth < 10% for frequencies > 3 kHz. –3 dB at
approximately 1 kHz
Up to 3 dB jitter gain from 2–4 kHz
Display Modes
Overlay Overlays bits 0-9 of a serial word to form each Eye
opening
10-Eye Parades bits 0-9 in a 10-Eye display