HP (Hewlett-Packard) HP 37722A Benutzerhandbuch
3
Telecom specifications
Bit rates:
2.048 Mb/s, 64 kb/s;
optional 8.448 Mb/s, 704 kb/s, sub-
64 kb/s.
Frame structure:
64 kb/s.
Frame structure:
2 Mb/s
unframed, to ITU-T G.704, G.706,
G.732, G.704: with no multiframe;
with CAS multi-frame with/
without CRC4 multiframe;
64 kb/s codirectional; independent
setting for transmitter and
receiver.
Interfaces:
G.732, G.704: with no multiframe;
with CAS multi-frame with/
without CRC4 multiframe;
64 kb/s codirectional; independent
setting for transmitter and
receiver.
Interfaces:
To ITU-T G.703 and
G.823.
Connectors
BNC:
BNC:
75 ohm, unbalanced.
3-pin Siemens:
120 ohm,
balanced.
Modes of operation
Transmit, receive, through mode.
Transmit, receive, through mode.
Auto setup
Bit rate, line code, framing and
pattern.
Bit rate, line code, framing and
pattern.
Test patterns
PRBS:
PRBS:
2
11
−
1 (ITU-T O.153),
2
15
−
1, 2
23
−
1 (ITU-T O.151)
(inverted or non-inverted).
Word:
Word:
Fully programmable n-bit
word (n=8 to 1024); all ones, 1 in 2
(1010).
Timeslot selection:
(1010).
Timeslot selection:
All
timeslots, single timeslot, n
timeslots for n = 1 to 31
(contiguous or non-contiguous).
Receive timeslot as for
transmitter, or independently set.
Deselected timeslots:
timeslots for n = 1 to 31
(contiguous or non-contiguous).
Receive timeslot as for
transmitter, or independently set.
Deselected timeslots:
2
6
−
1
PRBS or all ones (transmit only).
Test period:
Manual, single:
15 min, 30 min, 1 hour, 24 hour,
user defined:
1 to 100 seconds, minutes, hours,
days.
user defined:
1 to 100 seconds, minutes, hours,
days.
Transmitter
Timing:
Recovered (loop timed),
internal, external.
Internal clock:
Internal clock:
2.048 MHz,
64 kHz, (
±
10 ppm).
2 Mb/s transmitter
Output
Ternary:
Ternary:
HDB3 or AMI.
Binary:
TTL, data NRZ, clock
normal or inverted, .
Error insertion
Bit, code:
Bit, code:
Single, variable 10
−
2
to
10
−
8
.
Frame error add
FAS word, NFAS bit, CAS MFAS
word (CAS multiframe mode);
CRC MFAS word and CRC bits
(CRC4 multiframe mode).
Mode:
FAS word, NFAS bit, CAS MFAS
word (CAS multiframe mode);
CRC MFAS word and CRC bits
(CRC4 multiframe mode).
Mode:
Burst, continuous.
Alarm generation:
AIS 2 or 3
zeros in 512; AIS all ones, remote
alarm, remote mutiframe alarm,
no signal.
alarm, remote mutiframe alarm,
no signal.
Signaling bits:
Set ABCD
signaling bits in CAS multiframe
to any 4-bit pattern (all channels
contain the same pattern).
to any 4-bit pattern (all channels
contain the same pattern).
Overhead bits:
Individual setting
of Si, spare MFAS, NFAS bits 4 to
8 (Sa) for all odd-numbered
frames.
8 (Sa) for all odd-numbered
frames.
64 kb/s transmitter
Codirectional data output
Octet timing (to ITU-T G.703):
On, off.
Octet timing (to ITU-T G.703):
On, off.
Bit error add:
Single, variable
10
−
2
to 10
−
8
.
Specifications for telecom testing using the
HP 37722A telecom analyzer or the
HP 37732A telecom/datacom analyzer
HP 37722A telecom analyzer or the
HP 37732A telecom/datacom analyzer
Receiver
2 Mb/s receiver
Timeslot monitor:
Displays
contents of single data timeslot,
FAS timeslot, NFAS timeslot (bits
1 to 8 for all odd-numbered
frames), MFAS, single signaling
channel or all signaling channels.
FAS timeslot, NFAS timeslot (bits
1 to 8 for all odd-numbered
frames), MFAS, single signaling
channel or all signaling channels.
Input
Binary/ternary:
Binary/ternary:
2.048 Mb/s
±
100 ppm (nominal).
Terminate:
0 to 30 dB.
Binary:
TTL, data NRZ, clock
normal or inverted.
64 kb/s receiver
Codirectional data input:
64 kb/s
64 kb/s
±
150 ppm (nominal).
Terminate:
0 to 30 dB.
HP 37722A telecom analyzer