sokrat
Full Member level 5
telephone capacitance
Hi all
i want to ask about the capacitance between the tip & ring. or what standerd value for this capacitor and how I can modifay this value of the capacitor.
NOT:
When I sent my telephone to the central offece type (5ESS USA DTMF TYPE)
He send this result
1- measurements for normal set
0.0 VDC A-ETH
0.0 VDC B-ETH
0.0 VDC CALC. A-B
.079 VAC A_ETH
.099 VAC B_ETH
.020 VAC CALC. A_B
>10 MOHMS A-BAT
>10 MOHMS A_ETH
>10 MOHMS B_BAT
> 10 MOHMS B_ETH
>10 MOHMS A-B
0.0MADC LOOP
TEARM ? A-B-------------------------------------->?
.145 Uf CAP B-ETH
.145 UF CAP A-ETH
<-30 DBM PWR INF
7.97 DBRNP CCT NOISE
< -40 DBM LVL
29.8 DB CCT BAL
37.7 DBRNP GND NOISE
and tell me to change the capacitor between tip &ring
thanks
yours
SOKRAT
Hi all
i want to ask about the capacitance between the tip & ring. or what standerd value for this capacitor and how I can modifay this value of the capacitor.
NOT:
When I sent my telephone to the central offece type (5ESS USA DTMF TYPE)
He send this result
1- measurements for normal set
0.0 VDC A-ETH
0.0 VDC B-ETH
0.0 VDC CALC. A-B
.079 VAC A_ETH
.099 VAC B_ETH
.020 VAC CALC. A_B
>10 MOHMS A-BAT
>10 MOHMS A_ETH
>10 MOHMS B_BAT
> 10 MOHMS B_ETH
>10 MOHMS A-B
0.0MADC LOOP
TEARM ? A-B-------------------------------------->?
.145 Uf CAP B-ETH
.145 UF CAP A-ETH
<-30 DBM PWR INF
7.97 DBRNP CCT NOISE
< -40 DBM LVL
29.8 DB CCT BAL
37.7 DBRNP GND NOISE
and tell me to change the capacitor between tip &ring
thanks
yours
SOKRAT