Measurement Computing LogBook Series - Manual (Page 111)

LogBook User’s Manual 958896 Using Modems and the Upload Scheduler 7-9
Section Y: Setting up a LogBook with Short-Haul Modems
For a successful modem operation with LogBook, the following must be true:
• Modem support must be enabled via “authorization” from within LogView. (See pg. 7-1)
Use code: ED7B55484273 This code enables complete functionality for LogView.
• The LogBook must become modem capable for “connection at a fixed baud rate” via a
configuration file saved to its PC-Card.
• The host PC must contain a LogBook configuration that is setup for dial-out capability.
• One modem must be connected to or installed within a host PC.
• One modem must be connected to the LogBook’s RS-232 (DB9 SERIAL COM) connector.
A PC and LogBook can communicate over relatively long distances via short-haul modems. Although these
modems can be connected by cable, the more popular versions make use of radio frequency (RF) communications
to eliminate the need for a cable between the PC and LogBook.
From the standpoint of the PC and LogBook, a communication link via short-haul modems looks exactly like a
connection made via standard serial port. In other words, the use of short-haul modems is transparent to the PC and
LogBook. This “transparent aspect” is not true for telephone type modems.
Short-haul Modems, Cable Type
Short-haul Modems, Radio-Frequency Transmitter Type
The configuration for LogBook’s PC-Card is made through LogView. The PC communication settings are made
through the LogBook Control Panel configuration applet.
Under default conditions, when the PC attempts to communicate with the LogBook via its serial port, the LogBook
will initiate an auto-baud sequence that adopts the baud rate of the PC.
Short-haul modems are typically unable to properly negotiate the LogBook’s auto-baud
sequence on the RS-232 port, so the LogBook will need to be setup in fixed baud mode.
Once the configuration is complete you will need to download it to your PC-Card. This configuration download
can be made in either of two ways:
(1) via the PC-Card socket in your PC or
(2) through a parallel port connection to your LogBook.
Both methods are explained in the LogView section of this user’s manual.