2400/9600 BPS Faxmodem  (250-3027)   Specifications    Faxback Doc. # 4876

Physical Specifications                      Electrical Specifications

Configuration: Internal Half Card            Power Req:
   Jacks: 2-RJ11                             +5.0v: 200 ma
    Size: 5.25" x 3.90" (w/o connector)      +12.0v: 15 ma (85 w/speaker
          5.25" x 4.20" (with connector)             speaker @ max. vol.)
  Height: .625" max. from top of board       -12.0v: 10 ma

Performance Specifications

          Transmit Signal Level: -10 dBm +/- 1 dBm
   Transmit Frequency Tolerance: +/- O.O1 %
           Receive Signal Level: - 9 dBm to -43 dBm
          Carrier Detect Levels: ON   -43 dBm
                                 OFF  -48 dBm
    Receive Frequency Tolerance:

BIT ERROR RATE (BER) @ 2400 bps: 10 to the 5th power at 17 dB SNR
BIT ERROR RATE (BER) @ 1200 bps: 10 to the 5th power at 9 dB SNR
BIT ERROR RATE (BER) @  300 bps: 10 to the 5th power at 7 dB SNR

(dtc-07/28/93)