363-206-305
Technical Specifications
Issue 3 June 2000
10-67
Table 10-29. Transmission Specifications — VF Channel Units with Fixed
Settings —
Continued
Value (Measured at 25
°
C
)
Parameter POTS
SPOTS
®
Unit
Coin
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 ¶
≤
15 Counts in 15 Minutes
Overload at COT and HDT
≥
+
3 dBm0
Longitudinal Balance at the HDT **
(Minimum)
200 Hz, 500 Hz, 1,000 Hz:
≥
58 dB
3,000 Hz:
≥
53 dB
* Measured as insertion loss between 900-ohm terminations. R
EXT
includes
both the loop resistance and the station set resistance. Actual threshold
value for R
EXT
is 1100 ohms
±
100 ohms.
† Measured as the ICL with the HDT terminated in 600 ohms and with the
COT terminated in 900 ohms.
‡ Measured with respect to 900 ohms and 2.16
µ
F with the 4-wire path
broken or with the other end terminated in 1,100 ohms in parallel with 0.03
µ
F.
§ Measured with respect to 600 ohms and 2.16
µ
F with the 4-wire path
broken or with the other end terminated in 900 ohms and 2.16
µ
F.
¶ Measured with a holding tone of
−
13 dBm0 and a threshold of 59
dBrnC0.
** Measured by Institute of Electrical and Electronics Engineers (IEEE)
method 455-1976.
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