EF-701M interface converts a single channel of standard or TW partyline intercom to four-wire audio, while also converting call signals to RS-422 data (and back). The resulting four-wire audio plus RS-422 data can then be sent to a Clear-Com Matrix port, fiber-optic converter (modem) or connected to another EF-701M over twisted-pair cable such as CAT-5E.
Physical | |
Dimensions | (LxWxH) 122 x 151 x 41 mm |
Weight | 0.8 Kg |
Electrical | |
Voltage | 20 - 30 VDC |
Total Harmonic Distortion | Partyline - Matrix: <=0.5%, Matrix - Partyline: <=0.5% |
Performance | |
Frequency Response | Partyline – Matrix: 200-10KHz ± 3dB, Matrix - Partyline: 200-10KHz ± 3dB |
Maximum Gain | Partyline - Matrix (CC setting): 20dB ± 3dB, Partyline - Matrix (RTS setting): 16dB ± 3dB, Matrix - Partyline (CC setting): -5dB ± 3dB, Matrix - Partyline (RTS setting): -1dB ± 3dB |
Signal to Noise Ratio | Partyline - Matrix: <=-50dBu, Matrix - Partyline: <=-70dBu |
Maximum Input Level | >=20dBu |