Specifications

19A705178
REV NO. TITLE
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23
ROCKWELL MODEM TEST
SPECIFICATION/PURCHASE PART DRAWING
CONT ON SHEET SH NO. FIRST MADE FOR
F. C. F. O.
MADE BY
R. Sager
APPROVALS
DCB
M. R. P. D.
DIV OR DEPT.
19A705178
ISSUED
Nov. 19, 1986
11-18-86
LYNCHBURG
LOCATION
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REVISIONS
L30
PRINTS TO
of 15° peak-to-peak phase jitter at 150 Hz, or with a signal-
to-noise ratio of 15 dB in the presence of 30° peak-to-peak
phase jitter at 120 Hz (scrambler inserted).
At 4800 bps (V.27 bis/ter), the modem exhibits a bit error
rate of 10
-6
or less with a signal-to-noise ratio of 19 dB in
the presence of 15° peak-to-peak phase jitter at 60 Hz.
At 9600 bps, the modem exhibits a bit error rate of 10
-6
or
less with a signal-to-noise ratio of 23 dB in the presence of
10° peak-to-peak phase jitter at 60 Hz. The modem
exhibits a bit error rate of 10
-5
or less with a signal-to-noise
ration of 23 dB in the presence of 20° peak-to-peak phase
jitter at 30 Hz.
Typical BER Performace
3002 Unconditioned Line, -20 dBm Receive Signal Level
An example of the BER performance capabilities is given
in the following diagrams:
Typical BER Performace
Back-to-Back, -20 dBm Receive Signal Level
The BER performance test set-up is shown in the following diagram: