RFX144V24-S23 and RFX96V24-S23 Modem Designer’s Guide
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13-1
13. PERFORMANCE
13.1 TYPICAL BIT ERROR RATES
Typical bit error rate (BER) performance of the modem is shown in Figure 13-1. Performance is specified for a test
configuration conforming to that specified in CCITT Recommendation V.56. Bit error rates are measured for a flat line at a
received line signal level of -20 dBm.
13.2 TYPICAL PHASE JITTER
At 2400 bps, the modem exhibits a bit error rate of 10-6 or less with a signal-to-noise ratio of 12.5 dB in the presence 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-noise phase jitter
at 120 Hz.
At 4800 bps (V.27 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 7200 bps (V.29), the modem exhibits a bit error rate of 10-6 or less with a signal-to-noise ratio of 25 dB in the presence of
12° peak-to-peak phase jitter at 300 Hz.
At 9600 bps (V.29), 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 ratio of 23
dB in the presence of 20° peak-to-peak phase jitter at 30 Hz.
13.3 DTMF PERFORMANCE
DTMF performance is described in Table 13-1.
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