Tektronix WFM601, Service Manual

Page: 24 / 304

Specification
WFM 601 - Service Manual
1–5
Table 1–2:
SERIAL DIGITAL INTERFACE (Serial A & Serial B)
CATEGORY DESCRIPTION
Format
REF: 270 Mbit/s component. Complies with SMPTE 259M & CCIR 656.
Input Type REF:
Passive loop-through 75 compensated.
Input Level
REF: 800 mV peak-to-peak
$
10%.
REF: Input voltages outside this range may cause reduced receiver
performance.
Return Loss
w
25 dB 1-270 MHz. channels on or off, power on.
w
15 dB 1 -270 MHz, power turned off.
Performance Verification Procedure Step 20
Insertion Loss
v
1.5%.
Transmission Bandwidth
50 kHz – 300 MHz
$
1.0 dB.
REF:
–3 dB at not less than 500 MHz.
Performance Verification Procedure Step
:
21
Loop–Through Isolation REF:
w
50 dB to 300 MHz.
Serial Receiver Equalization Range
Proper operation with up to 17 dB loss at 135 MHz using coaxial cable
having 1/
√
F
loss characteristics. 800 mV launch amplitude.
REF:
Nominally 175 meters of Beldon 8281 coaxial cable.
Performance Verification Procedure Step : 18
Table 1–3:
SERIAL VIDEO OUTPUT (Follows Serial A/B Selection)
CATEGORY DESCRIPTION
Format
REF:
270 Mbit/s component. Complies with SMPTE 259M & CCIR 656.
Output Level
800 mV peak-to-peak
$
10%.
REF: Internal jumper can change output to 740 mV peak-to-peak
$
10% .
Performance Verification Procedure Step : 8
Return Loss
w
15 dB 1–270 MHz.
Performance Verification Procedure Step : 20