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Performance Tests
STM-0/STS-1 Transmitter Output Waveshape
STM-0/STS-1 Transmitter Output Waveshape
Specifications
Description
An Oscilloscope is connected to the HP 37718A/19A Transmitter STM-0/
STS-1 output and used to check the STM-0/STS-1 waveshape against the
relevant mask.
Equipment Required
Procedure
Positive Pulse
1 Recall HP 37718A/19A DEFAULT SETTINGS as shown on page 3-4
and set up the display as shown on the following page.
Level Pulse Amplitude & Shape
Cross-Connect
(450 feet)
530 mV peak (nominal). Compliant with GR-253, Issue
1, Figure 4-10 and draft recommendation ITU-R F.750,
Appendix1
HIGH 1 V peak (nominal)
LOW 300 mV peak (nominal)
Oscilloscope : HP 54520A Option 001
75Ω Termination
: HP 15522-80010
T Connector : HP 1250-0781
TRANSMIT
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