HP 37717C, Calibration Manual, Page: 39 / 399

1-18
General Information
Specifications
FEAC code generation: With C-Bit
parity framing loopback and alarm/
status codes as per ANSI T1.107-1995
can be generated. Loopback codes: A
single burst of N loopback codes and M
messages where N and M are in the
range 1 through 15.
Alarm/status codes: Any ANSI T1.107-
1995 message or any
0xxxxxx011111111 message where x is
selectable may be transmitted either in
a single burst of 1 to 15 times or
continuously.
Spare bits generation: The following
spare bits can be modified;
34 Mb/s: FAS bit 12
2 Mb/s Si bits (international bits):
Timeslot 0 bit 1 in both FAS and NFAS
frames.
2 Mb/s E bits: CRC4 frames 13 and 15;
timeslot 0 bit 1.
2 Mb/s Sa bit (national bits): NFAS
timeslot bits 4 to 8.
2 Mb/s Sa bit sequences: An 8 bit
sequence may be transmitted in any
selected NFAS Sa bit when CRC4
framing has been selected. The
sequence appears in odd-numbered
CRC4 frames, starting at frame 1.
2 Mb/s CAS multiframe: MFAS
timeslot bits 5, 7 and 8.
Signaling bits generation: 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.
Background patterns: Unframed 2
9
-1
PRBS, AIS or same as test pattern as
foreground test signal.
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.
DSn/PDH receiver
Type, connectors, rates, line code and
framing: As for DSn/PDH transmitter.
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 ñ 20% for cable
lengths as per ITU-T G.703.
E1 (unbalanced): 2.37 V ñ 20% for
cable lengths as per ITU-T G.703.
E3 (unbalanced): 1.0 V ñ 20% with
automatic equalization for cable lengths
as per ITU-T G.703.
Monitor point compensation:
DS1 (balanced), E1 (balanced and
unbalanced): 20, 26 or 30 dB gain
relative to terminate mode. 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.
Framing: All rates: Unframed, framed
and structured. DS1: ESF (D4).
DS1: ESF to ANSI T1.403-1989,
Bellcore TR-TSY-000499 and ITU-T
G.704; the ESF data link (DL) defaults
to repetition of idle code (01111110);
DS3: M13 to ANSI T1.107-1995.