Black Box MD1641A, MD1640A manual Am Getting Garbage Characters on the Monitor

SERIES II INTELLIGENT DATA/FAX MODEMS

•Try entering the L8 (List Online Diagnostics) command in on-line mode, making a screen print of the diagnostics listing, and checking for parameters that may be unacceptable (number of re- trains, round trip delay, etc.).

I Am Getting Garbage Characters on the Monitor

•Your computer and the remote computer may be set to different word lengths, stop bits, or parities. If you have connected at 8-N-1, try changing to 7-E-1, or vice-versa, using your communications software.

•You may be experiencing line noise. Enable error correction, if it is disabled, or hang up and call again; you may get a better connec- tion.

•At speeds above 2400 bps, the remote modem might not use the same transmission or error correction standards as your modem. Try connecting at a slower speed or disabling error correction.

(With no error correction, however, line noise can cause garbage characters.)

•Try entering the L8 (List Online Diagnostics) command in on-line mode, making a screen print of the diagnostics listing, and checking for parameters that may be unacceptable (number of re- trains, round trip delay, etc.).

My Fax and Communications Software Won’t Run at the Same Time

Communications devices can be accessed by only one application at a time. Under DOS or Windows 3.1x, you can run either your fax software or your datacomm software, but not both at the same time, unless you have a special communications device management application. In Windows 95, you can have data and fax communication applications open at the same time, but they cannot use the same modem at the same time.

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