HP 37718A Installation And Verification Manual page 28

General Information
Specifications
Signaling bits
Modify and monitor: AB for DS1 SF and
SLC-96 framing.
ABCD bits for DS1 ESF, E1 PCM30
and PCM30CRC framing.
DS1: User selectable Signaling ON or
OFF. When ON user selectable AB bits
for SF, ABCD for ESF and AB bits for
SLC-96 framing.
Receiver capture range:
All rates: ±100 ppm.
Ext DS1 mux input: Weco bantam
connector, AMI or B8ZS.
Ext 2 Mb/s mux input: BNC to ITU-T
G.703, AMI or B8ZS.
Jitter tolerance: To Bellcore TR-TSY-
000009 (DS1/DS3) and ITU-T O.171.
Operating level (terminate):
User selectable as follows:
DS1 (balanced): DSX-1 to DS1-LO
levels.
DS3 (unbalanced): DS3-HI, DSX-3 and
DS3-900 levels.
E1 (balanced): 3.0 V 20% for cable
lengths as per ITU-T G.703.
E1 (unbalanced): 2.37 V 20% for cable
lengths as per ITU-T G.703.
E3 (unbalanced): 1.0 V 20% with
automatic equalization for cable lengths
as per ITU-T G.703.
Synchronization: Sync loss when BER
≥ 20% over 100 ms for PRBS or ≥ 4%
over100 ms for word patterns. Sync
gain when 32 consecutive error free bits
received.
Monitor point compensation:
DS1 (balanced), E1 (balanced and
unbalanced): 20, 26 or 30 dB gain
relative to terminate mode.
1-18
E1 (balanced) is restricted to half cable
length with respect to ITU-T G.703 for
26 and 30 dB gains.
DS3 and E3: 20 or 26 dB gain relative
to terminate mode.
Frame alignment:
2 Mb/s: As ITU-T Rec. G.704
2 Mb/s CRC4: As ITU-T Rec. G.706.
2 Mb/s CAS: As ITU-T Rec. G.732.
8 Mb/s: As ITU-T Rec. G.742
34 Mb/s: As ITU-T Rec. G.751.
DS3 frame alignment: As ANSI
T1.107
2 Mb/s frame gain: 1 correct sequence
of FAS-NFAS-FAS.
2 Mb/s frame loss: 3 consecutive
incorrect FAS or NFAS words.
2 Mb/s CAS frame gain: 1 correct
CAS multiframe and the previous CAS
word is not 0000.
2 Mb/s CAS frame loss: 2 consecutive
errored CAS multiframe patterns or 16
frames with CAS word 0000.
DS1 ESF frame gain: 24 successive
error-free FAS bits followed by 3 error-
free CRC checks.
DS1 ESF frame loss: 2 in any 4 FAS
bits errored.
DS1 D4, SLC-96 frame gain: 24
successive error-free F bits i.e 12 Ft and
12 Fs.
DS1 D4, SLC-96 frame loss: 2 in any
4 Ft bits errored or 2 Fs bits in any 4,
errored.
DS2 frame gain: 16 consecutive error-
free F-bits.
DS2 frame loss: 3 out of 16 F-bits in
error.
DS2 multiframe gain: 2 consecutive