Measurement Computing LogBook Series - Manual (Page 103)

LogBook User’s Manual 958896 Using Modems and the Upload Scheduler 7-1
Using Modems and the Upload Scheduler 7
What is a Modem?
A modem
[ MO (DULATOR) + DEM (ODULATOR)]
is a device which can convert data to a form capable of being
transmitted by wire and/or radio frequency to a second device of the same nature. The second device (also a
modem) reconverts the data to its pre-transmission state. A pair of modems provides a convenient way for two
distant devices to communicate with each other.
Modems typically fall into one of two categories: (1) Telephone modems, and (2) Short-haul modems. This
chapter discusses the use of both types of modems with LogBook. To use a modem system with LogBook you
will need to refer to the documentation that was packaged with your modem, in addition to the applicable
section(s) of this chapter.
Telephone modems take advantage of existing
telephone lines to communicate with other such
modems throughout the world. Short-haul modems communicate via radio frequency
transmitter or cable to a reasonably close device, usually
within a distance of a 1 or 2 kilometers.
Telephone Modem Systems
(See Section X, pg. 7-2)
Short-haul Modem Systems
(See Section Y, pg. 7-9 )
Verify that modem support has been enabled before proceeding through the setup steps.
Modem support can be enabled through an authorization process, as described below.
To verify that modem support is enabled:
1. Run LogView.
2. From LogView’s main window, pull-down the
File menu.
3. Select Authorization. An Authorization box will
appear.
4. If modem support is disabled enter this code
ED7B55484273
This will enable all three features.
Checking that Modem Support is Enabled