Tuneup
Calibration basics
30
August 2004
© Tait Electronics Ltd
Calibration basics
Tait TM8000 radios are designed to be totally electronically tuned. No
physical tuning is required, as all tuning is done by electronic trimming
usually in the form of a digital-to-analog converter (DAC). The calibration
process uses a PC running the calibration software, which is connected to a
radio via an RS232 programming cable. RF in/out and audio in/out from
the radio are also provided for connection to test equipment.
Calibrating the radio
To calibrate the radio
1.
Connect a radio to your PC and test equipment. For more informa-
tion, refer to the section on calibration equipment setup in the
TM8200 Service Manual.
2.
Read the radio.
3.
Select the File > Save menu command to save the radio’s current
calibration database to disk. This will enable you to view data (see
“Viewing calibration files” on page 32) and re-program with a
previous calibration database if necessary.
4.
Either:
■
Change deviation or squelch settings (see “Deviation and squelch
thresholds” on page 36), or
■
Complete some calibration tests (see “Calibration tests” on page
34).
5.
View and check the calibration data calculated (optional - see
“Viewing calibration test results” on page 32).
6.
Program the radio.
Note
Before performing some tests, the radio must contain at least
approximate receiver calibration settings. If the radio being cali-
brated has had settings deleted or default data programmed, then
program another radio’s calibration database into the radio before
starting the tests.
Using the calibration application
The following controls are unique to the Calibration Application.
■
■
