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TECHNICAL NOTES
Radio Compatibility:
Midian has taken the utmost care to ensure the option board integrates into the radio with
minimal impact to the features of the radio. However, some features may not be available in the radio when an
option board is used. If a feature is not available, please contact Midian to see if the feature can be added.
Radio Firmware:
Midian recommends installing the module into the radio with the existing firmware of the radio
provided the firmware is at least R05.00.00. If the radio has a firmware version older than R05.00.00, it
must
be
upgraded. If there are any issues with the firmware then the firmware should be upgraded to the latest. However,
it should be noted that occasionally firmware updates may cause a conflict with proper option board/radio
communications. This may appear that the SVR is not working properly, but it is a conflict in the serial
communication between the option board and radio. Please note that firmware versions between the EMEA
region and the Asia and America regions might be different.
Accessory Pin Features:
Upon power-up, the radio does not always report the state of the accessory pins to
the option board. It may be necessary to toggle the state of these inputs once after power-up to ensure correct
operation.
Option Board Feature:
Enabling the option board feature tells the radio to report events such as button press,
PTT press, carrier detect, etc. to the option board. This feature enables communication between the option board
and the radio.
When controlling the SVR with a radio button, it is absolutely required to enable this feature on all channels. For
repeat enable/disable on a per channel basis only enable the option board on repeat channels and the power up
mode of the unit should be Power Up In Store/Retransmit Mode. On display models, the following icon appears
on the LCD when option board mode is on:
MIDIAN CONTACT INFORMATION
MIDIAN ELECTRONICS, INC.
2302 East 22
nd
Street
Tucson, Arizona 85713 USA
Toll-Free:
1-800-MIDIANS
Main:
520-884-7981
E-mail:
HU
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Web:
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www.midians.com
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