HP 37718A Installation And Verification Manual page 127

Performance Tests
STM-0/STS-1 Transmitter Output Waveshape
STM-0/STS-1 Transmitter Output Waveshape
Specifications
Level
Cross-Connect 530 mV peak (nominal). Compliant with GR-253, Issue
(450 feet) 1, Figure 4-10 and draft recommendation ITU-R F.750,
Appendix1
HIGH 1 V peak (nominal)
LOW 300 mV peak (nominal)
Description
An oscilloscope is connected to the HP37718A/19A Transmitter STM-0/
STS-1 output and used to check the STM-0/STS-1 waveshape against the
relevant mask.
Equipment Required
Oscilloscope
Ω
75 Termination
T Connector
Procedure
Positive Pulse
1 Recall HP37718A/19A DEFAULT
SETTINGS as shown on page 3-2
and set up the
TRANSMIT
as shown opposite.
2 Connect the 52/155 Mb/s 75Ω
DATA OUT port to the
Oscilloscope CHAN 1, terminate
in 75Ω.
3 Select CHAN 1 on the oscilloscope
Pulse Amplitude & Shape
: HP 54520A Option 001
: HP 15522-80010
: HP 1250-0781
display
3-59