363-206-305
Technical Specifications
10-80
Issue 3 June 2000
Tabl e 10-37.
SPQ
®
909 Electrical and Transmission Specifications —
Continued
Parameter Value
Output impedance
(structural impedance, hybrid impedance)
600
Ω
Minimum longitudinal balance (measured by
IEEE Method 455-1985)
200 Hz to 1,000 Hz:
≥
45 dB
3,000 Hz:
≥
40 dB
Idle channel noise, end-to-end
≤
20 dBrnC
Frequency response (loss relative to 1,004
Hz)
End-to-end 300 Hz to 3,000 Hz:
−
0.5 dB to
+
1 dB
3,200 Hz:
−
0.5 dB to
+
1.5 dB
SPQ
909 alone 300 Hz to 3000 Hz:
−
0.25 dB to
+
0.5 dB
3200 Hz:
−
0.25 dB to
+
0.75 dB
60-Hz Rejection (loss relative to 1,004 Hz) > 20 dB
Cross talk (0 dBm0 input, 200 Hz to 3,400 Hz)
−
65 dBm0
Impulse noise at a threshold of 47 dBrnCO
for 15 minutes
≤
15 counts
Data pulse distortion (PAR)
End-to-end > 90
SPQ
909 alone
≥
94
Single frequency distortion with input of:
0 Hz to 12 kHz, 0 dBm0 <
−
28 dBm0 at 0 Hz to 12 kHz
1,004 Hz to 1,020 kHz, 0 dBm0 <
−
40 dBm0 at 0 Hz to 4000 Hz
Signal-to-distortion with input of:
0 dBm0 to
−
30 dBm0 > 33 dB
−
30 dBm0 to
−
40 dBm0 > 27 dB
−
40 dBm0 to
−
45 dBm0 > 22 dB
Continued on next page
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