System True digital. Second generation Texas Instruments. TMS320C25 processor. 8khz sampling rate. Digital input and output gain processing, filtering. Trans-hybrid Loss >40dB with pink noise or voice as test input. Test set-up as specified in our Telephone Q & A. Send Level to Phone Line -lOdBm average level. Maintained by internal digital AGC. Frequency Response (caller to intercom) 200—3400Hz, ±1 dB. Noise and Distortion (caller to intercom) Distortion: <0. 5% THD+N, measured @ 1khz at any caller level from -48dBm to -8dBm. Signal-to-Noise >60dB referenced to -l8dBm phone level. >72 dB referenced to OdBm phone line level. Monitor Audio Output Three-pin male XLR connector. Active differential. Typical output level OdBrn. Will drive 600Q.

Intercom Interface Bi-lateral current source interface for standard intercom systems. Three-pin XLR female connector.  Selectable via front panel swiitch for channel 2, or balanced mode operation. Intercom send and receive level variable from approximately -2OdBv to -OdBv. Channel 2/wet mode provides 18V at UI) to 10 standard belt packs. Four-wire interface is provided via rear panel 15 connector. Unbalanced, 600~, level variable from -2OdBv to -OdBv. Physical Dimensions 7 W’ x I ~4" x 9 ‘3’32" 18.4cm x 3.8cm x 24cm Weight 3 pounds (8 pounds shipping weight) 1.3 kilograms (3.6 kilograms shipping weight Power supply External plug transformer. 9V DC, 500ma. A~ for I 17V/6OHz or 230 V/50Hz AC.