HP 37717C Calibration Manual

2-7
Installation
Connecting to the Network
DS1 100 Ω,
2Mb/s 120 Ω IN
PDH / DS1 receiver input interface. Allows the connection of 100 Ω
balanced DS1 and 120 Ω balanced 2 Mb/s data signals.
DS1 100 Ω,
2Mb/s 120 Ω OUT
PDH / DS1 transmitter output interface. Provides 100 Ω balanced DS1
and 120 Ω balanced 2 Mb/s data signals. A “keep alive” signal is output
when the transmit signal is SDH/SONET.
75 Ω OUT 1 Replica of PDH / DSn OUT delayed by 4 bits at all rates except 140 Mb/s.
75 Ω OUT 2 Replica of PDH / DSn OUT delayed by 8 bits at all rates except 140 Mb/s.
75 Ω OUT 3 Replica of PDH / DSn OUT delayed by 12 bits at all rates except
140 Mb/s.
ERROR OUT Provides an ECL pulse each time an error occurs. If 2 or more errors
occur within 16 clock periods only 1 pulse is output.
STM-1 IN SDH receiver input interface. Allows the connection of 75 Ω unbalanced
STM-1 electrical signals.
STM-1 OUT SDH transmitter output interface. Provides a 75 Ω unbalanced STM-1
electrical output.
EXT MTS CLOCK Allows connection of a, 75 Ω or 120 Ω, timing reference as per CCITT
G.811. The reference format may be either clock or data. Options
US1[US5] and A1T[A1U] only.
CLOCK IN Allows connection of SDH/SONET binary clock to Options 130 or 131.
CLOCK OUT
(Opt OYH)
Provides a STM-1/STM-4 binary clock from Options USN or UKT.

HP 37717C Specifications

General

Brand	HP
Model	37717C
Category	Measuring Instruments
Language	English