Black Box MD1641A Manuale Utente
18
SERIES II INTELLIGENT DATA/FAX MODEMS
13) FAX (FX).
This LED is lit when the modem is connected in FAX
mode.
14) 336+ (MD1640A) only: ERROR (ERR).
When this LED is lit, either
the leased line is down and the modem is in dial backup mode, or else
the self-test has failed.
the self-test has failed.
1.9 Controls on PC Board
The Series II Modem is designed on a single printed circuit (PC) board.
This board contains one 16-position DIP-Switch (numbered 1-16). The
DIP-Switches are accessible through a cut-out on the side of the
modem. There is also a knob which is used to adjust the speaker
volume. This knob is accessible through the modem's rear panel.
This board contains one 16-position DIP-Switch (numbered 1-16). The
DIP-Switches are accessible through a cut-out on the side of the
modem. There is also a knob which is used to adjust the speaker
volume. This knob is accessible through the modem's rear panel.
The sixteen DIP-Switches control various modem options or set default
values for Command Mode operation. There is a difference in how
several of the switches operate depending on whether you are in syn-
chronous or asynchronous mode. Refer to the switch label on the
bottom of the Modem for an exact list of the switch functions in
asynchronous and synchronous operation.
values for Command Mode operation. There is a difference in how
several of the switches operate depending on whether you are in syn-
chronous or asynchronous mode. Refer to the switch label on the
bottom of the Modem for an exact list of the switch functions in
asynchronous and synchronous operation.
Chapter 9
of this manual also provides detailed instructions on
configuring all of the Modem's PC board options.