363-206-305
Technical Specifications
10-70
Issue 3 June 2000
Table 10-31. Transmission Specifications — AUA45 Dual Ringing Repeater
Channel Unit
Parameter Value (Measured at 25
°
C
)
Loop Design The AUA45 channel unit is not limited to CSA
design rules. Maximum cable loss should not
exceed 9 dB, split in any proportion between
the two end cable links. Total combined loop
resistance (not including the terminating
equipment) should not exceed 1500 ohms.
Structural Impedance 900 ohms
+
2.16
µ
F
Balance Impedance 900 ohms
+
2.16
µ
F
1,000-Hz Loss * (
±
0.5 dB typical,
±
1.0 dB max)
0 dB or 3 dB (switch selectable)
Bandwidth (Relative to the 1000-Hz
loss)
+
1 to
−
0.5 dB at 400 Hz and 2,800 Hz
Return Loss†(end-to-end) ERL
≥
26 dB, SRL
≥
20 dB
Idle Channel Noise ‡ 20 dBrnC Maximum
Signal-to-Distortion Ratio
(at
−
10 dBm)
> 33 dB
Peak to Average Ratio (PAR)
(dial pulse distortion) at
−
13 dBm
> 90
Gain Tracking (1,004 Hz)
−
37 dBm0 to
+
3 dBm0
−
50 dBm0 to
−
37 dBm0
±
0.5 dB Maximum
±
1.0 dB Maximum
Intermodulation Distortion
(
−
13 dBm0 Input)
A-B (R2) Product: > 43 dB
2A-B (R3) Product: > 44 dB
Single Frequency Distortion
(0-12 kHz 0 dBm0)
<
−
28 dBm0
Impulse Noise at 47 dBrnC0
≤
15 Counts in 15 Minutes
Overload at COT and HDT at
+
3 dBm0 is
≤
0.5 dB compression
See footnotes at end of table.
Continued on next page
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