HP 37718A Installation And Verification Manual page 31

Ω,
DS1 100
Ω
2Mb/s 120 IN
Ω,
DS1 100
Ω
2Mb/s 120 OUT
52/155 Mb/s
DATA IN
52/155 Mb/s
DATA OUT
64k REF IN
1.5M REF IN
2M REF IN
REF OUT
MUX
Ω
MUX DS1 100
Ω
MUX 2 Mb/s 75
DEMUX DS1
Ω
100
DEMUX
Ω
2 Mb/s 75
Installation
Connecting to the Network
PDH / DS1 receiver input interface. Allows the connection of 100
balanced DS1 and 120
PDH / DS1 transmitter output interface. Provides 100
Ω
and 120 balanced 2 Mb/s data signals. A "keep alive" signal is output
when the transmit signal is SDH/SONET.
SDH/SONET receiver input interface. Allows the connection of 75
unbalanced STM 0/1, STS 1/3 electrical signals.
SDH/SONET transmitter output interface. Provides a 75
STM 0/1, STS 1/3 electrical output.
These ports allow connection of timing reference signals.
Provides a 2 MHz reference Clock Output.
Allows the insertion of an external 2 Mb/s tributary into the transmitted
payload.
Allows an externally supplied DS1 signal to be inserted in any or all
timeslot(s) of a DS3 signal. In conjunction with the SDH/SONET module
a DS1 signal can be inserted into a VT1.5 or TU-11.
Allows an externally supplied 2.048 Mb/s signal to be inserted in any or
all timeslot(s) of a 34 Mb/s signal. In conjunction with the SDH module a
2.048 Mb/s signal can be inserted into a TU-12.
Allows a DS1 signal to be dropped from any timeslot of a DS3 signal. In
conjunction with the SDH/SONET module this port allows the
demultiplexing of a DS1 signal carried in a VT1.5
Allows a 2.048 Mb/s signal to be dropped from any timeslot of an 8.448
Mb/s, 34.368 Mb/s or 139.264 Mb/s signal.
Ω
balanced 2 Mb/s data signals.
Ω
Ω
balanced DS1
Ω
Ω
unbalanced
2-7