|
Specification |
Description |
|---|---|
|
Connectors |
RJ-21x |
|
Return loss (ref. 600 Ohms +2.2 uF standard) |
20 dB min. (ERL) |
|
4 to 2 wire gain Tolerance |
+/- 1 dB |
|
4 to 2 wire gain range |
+6 to -6 dB |
|
2 to 4 wire gain Tolerance |
+/- 1 dB |
|
2 to 4 wire gain range |
+6 to -6 dB |
|
Frequency response |
+/- 1 dB |
|
Trans-hybrid loss |
17 dB min. @ 300 Hz-3.0 KHz into 600 Ohms + 2.2 uF |
|
Signal overload level |
+3 dBm at 0 dB gain |
|
CMRR |
> 80 dB |
|
T-R input impedance |
Voice band 600 Ohms +2.2 uF standard |
|
Idle channel noise through connection |
< 20 dB rnC |
|
Crosstalk transmit to receive channels |
< -70 dB @ 1 kHz |
|
T-R isolation to SELV |
>1500VRMS |
|
Off-hook detect |
Guaranteed Detect : Current > 10 mA Guaranteed No Detect: Current < 3.3 mA |
|
Operating loop current |
18 mA to 70 mA |
|
Loop current and polarity detect |
Single bit indicates if the current is flowing from Tip to Ring or Ring to Tip. |
|
Ring detection |
Guaranteed Detect: 30 VRMS 17 - 33 Hz (US version) Guaranteed No Detect: No detect <15 VRMS (0 - 5 kHz) |