Appendix A: Specifications
A–2 WFM 601A, WFM 601E & WFM 601M User Manual
Table A–1: Electrical specifications (cont.)
Characteristic Reference informationPerformance requirement
Serial Digital Video Interface
(SER A and SER B inputs)
Format 270 Mbit/s component. Complies with SMPTE
259M and CCIR 656.
Input Type Passive loop-through, 75 compensated.
Input Level 800 mV peak-to-peak $10%. Input voltages
outside this range might cause reduced receiver
performance.
Return Loss
Power on w25 dB 1–270 MHz, channels on or off.
Power off w15 dB 1–270 MHz.
Insertion Loss v1%.
Transmission Bandwidth 50 kHz – 300 MHz $1.0 dB.
–3 dB at not less than 500 MHz.
Loop-through Input Isolation w50 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 load Internal adjustment can change output to less than
600 mV and greater than 1000 mV.
Return Loss w15 dB 1–270 MHz
Eye Pattern Display
(WFM601E and WFM 601M Only)
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