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Metering Characteristics (Determinized by MTC-20232 CODSP)
Table 11: Metering Characteristics (Determinized by MTC-20232 CODSP)
Conditions: see paragraph "operating conditions"
Parameter
Conditions
Fml
Metering frequency, 12kHz
Fmh
Metering frequency, 16kHz
SFN1
Single-frequency noise, subharmonics
for 12kHz, 30Hz to 12 kHz
for 16kHz, 30Hz to 12 kHz
SFN2
Single-frequency noise, mixed products
12kHz, 12kHz to 20kHz
12kHz, 20kHz to 132kHz
16kHz
Nmc
In-band noise due to metering signal
Nmt
Transient noise due to metering pulse
THDm
Metering total harmonic distortion,
30 Hz to 132 kHz, out of CODSP
Dm
Metering signal distortion at load
Vlm
Metering pulse amplitude, maximum
level with Zco=900Ω, Rline=130Ω
SYMm
Metering symmetry, a and b wires
SFNtx
Single frequency noise, mixed products,
10Hz to 4 kHz, TX path
Note:
Measured in accordance to ITU-T speci-
fication 071 (Blue Book)
MTK-40131
Min
Max
-60
+60
-80
+80
-69
-69
-51
-69
-69
-60
-35
0.5
5
207
253
24
-63
22
Units
Note
Hz
(≈ ±0.5%)
Hz
(≈ ±0.5%)
dBm0
dBm0
dBm0
dBm0
dBm0
dBmp
1
dBm0
1
%
%
on 200Ω
mVrms
(≈ ±10%)
dB
(≈ max 6%)
dBm
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