HP 37732A User Manual

Page 6

8 Mb/s measurements
(Option 002)

Adds framed and unframed
pattern generation and
measurements at 8 Mb/s. All
specifications same as 2 Mb/s
except:

Clock:

8.448 Mb/s (internal),

500 kHz to 9 MHz (external).
Line code:

HDB3.

Ternary data input:

8.448 Mb/s

100 ppm.

704 kb/s measurements
(Option 003)

Adds framed/unframed pattern
generation and measurements at
704 kb/s. All specifications same
as 2 Mb/s except:

Clock:

704 kb/s.

Frame error simulation

: No

CRC4 mode.
Timeslot selection

: For n up to

10.
Timeslot monitor:

No CRC4;

MFAS replaced by timeslot 0
frames 1, 13, 15.
Overhead bits setting:

Si,

unassigned frame, spare service,
spare MFAS bits.

Sub-64 kb/s testing
(Option 005)

Testing of sub-64 kb/s data signals
to ITU-T X.50 and X.58.

Structured bearer signal:

Either

64 kb/s codirectional signal or one
timeslot within a 2.048 Mb/s signal
(without CAS multiframe).

Test patterns
PRBS:

−

1, 2

−

1 (ITU-T O.151).

Word:

Fully programmable user

word (octet aligned); 14 bits for
X.50; 16 bits for X.58.
External pattern:

Via X.21-

leased port.

Deselected sub-rate channel
contents
X.50:

F0000000; F1111111;

F1111110; F0000001.
X.58:

11111111; 01010101.

Error add
Bit:

Single; variable rate 10

−

where n = 2 to 6.
Frame:

1 to 32 consecutive frame

bits (burst).
Frame error add ratio: 10

−

where

n = 2 to 6.

Measurements
Errors:

Bit, frame.

Alarms:

Frame loss; pattern loss;

remote alarm.
User channel interface:
Conforms to ITU-T X.50 divisions
2 and 3, X.50 bis, and X.58 as
appropriate for 0.6, 1.2, 2.4, 4.8,
9.6, 14.4, 19.2, 48 kb/s. Circuit
numbering to ITU-T X.53.

Octet monitor
Displays contents of any selected
8-bit envelope. Monitors
information bits and network bits.

Generate and measure:

X.50

and X.58, AIS (all ones).

Timeslot access
(Options 005 and 006)

Adds external X.21 data access
and 600 ohm audio access, and
internal talk/listen to a (64 kb/s)
timeslot of the primary data
stream.

X.21 data access
External drop/insert.
Rate

: Unstructured n

64 kb/s,

n = 1 to 6.
Rate

: Structured sub-64 kb/s

(option 005 only).
Single X.50, X.58 circuit mux/
demux to 2 Mb/s, mux to 64 kb/s
via X.21 interfaces.
Mode

: DCE.

Connector:

15-pin D-type.

Audio access
External drop/insert.
600 ohm (0 dB TLP nominal).
A-law codec. Single timeslot.
Connectors:

3-pin Siemens.

Input and output level:

3 dBm

to –50 dBm (nominal).

Internal talk/listen

Tone generation
and measurement
(Options 005 and 006)

2.048 Mb/s only

Generation
Into n

64 kb/s timeslots

(n = 1 to 31).
Level:

0 to

−

55 dBm0, 5 dB steps.

Fixed frequencies:

404, 1008,

2100, 2804 Hz,

1 Hz.

Variable frequency:

100 Hz to

3.9 kHz,

15 Hz.

Measurement
In selected 64 kb/s timeslot.
Code word:

Measurements with

offsets.
Signal level:

−

80 to

3 dBm0.

Channel frequency:

40 Hz to

3.99 kHz.

Specifications of options available
for both analyzers