Connectors, Pin Siemens 120 ohm, Modes of operation

Specifications for telecom testing using the

HP 37722A telecom analyzer or the

HP 37732A telecom/datacom analyzer

Telecom specifications

Transmitter

Receiver

Bit rates: 2.048 Mb/s, 64 kb/s; optional 8.448 Mb/s, 704 kb/s, sub- 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: To ITU-T G.703 and G.823.

Connectors

BNC: 75 ohm, unbalanced.

3-pin Siemens: 120 ohm,

balanced.

Modes of operation

Transmit, receive, through mode.

Auto setup

Bit rate, line code, framing and pattern.

Test patterns

PRBS: 211 − 1 (ITU-T O.153), 215 − 1, 223 − 1 (ITU-T O.151) (inverted or non-inverted).

Word: Fully programmable n-bit word (n=8 to 1024); all ones, 1 in 2 (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: 26 − 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.

Timing: Recovered (loop timed), internal, external.

Internal clock: 2.048 MHz, 64 kHz, (± 10 ppm).

2 Mb/s transmitter

Output

Ternary: HDB3 or AMI.

Binary: TTL, data NRZ, clock normal or inverted, .

Error insertion

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: Burst, continuous.

Alarm generation: AIS 2 or 3 zeros in 512; AIS all ones, remote 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).

Overhead bits: Individual setting of Si, spare MFAS, NFAS bits 4 to

8(Sa) for all odd-numbered frames.

64 kb/s transmitter

Codirectional data output Octet timing (to ITU-T G.703):

On, off.

Bit error add: Single, variable 10− 2 to 10− 8.

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.

Input

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 ± 150 ppm (nominal). Terminate: 0 to 30 dB.

HP 37722A telecom analyzer