MT-4E ANALOG & P25 DIGITAL RADIO SYSTEMS | MAINTENANCE GUIDE
Chapter 5: Codan Radio System Testing Page 19
Radio Service Software (RSS)
Start the RSS program on the computer and ensure you are connected to the receiver or transmitter via
the type A to 5 pin mini-type B USB cable. Read the transmitter or receiver programming and familiarize
yourself with the settings (RF frequency, wide / narrowband, digital / analog, CTCSS / NAC, etc.).
Control Cards
Some Codan MT-4E radio systems may have an AC-3E Audio Control Card or CI-BC-4E Base Control
Card for use in the radio system. The Control Cards connect to the receiver and transmitter balanced
audio lines with an unbalanced load, which could cause some measurements to be in error. If the radio
system includes an AC-3E Audio Control Card or CI-BC-4E Base Control Card, remove the control card
from the rack for the individual receiver and transmitter tests unless otherwise noted.
Adapters, Cables and Extender Cards
Various adapters, cables and extender cards are required for the diff erent radio tests. Extender cards
and adapters are available from Codan Communications. The receiver reference oscillator and RF
preselector fi lter tests require an SMB - BNC adapter and a small SMB - SMB cable is required for the
reference oscillator test as well. The SMB adapters and cables are included in the A-TK-04 Tool Kit.
Codan MT-4E Radio System Test Sheet
A Codan MT-4E Radio System Test Sheet is included in Chapter 7 of this Maintenance Guide. It is
recommended that this test sheet be fi lled out each time the radio system is tested. If two or more pairs
of transceivers are tested, use a second test sheet to record the results. The test sheet will record
settings for a single Tx and Rx frequency, however other frequencies can be tested and recorded if
desired.
Summary of Contents for MT-4E
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