
4
HARDWARE INSTALLATION
Be certain to follow standard anti-static procedures when handling any of Midian’s products.
VX-350: Remove the battery, exposing the option board cover and remove the cover. Plug the scrambler onto
the options connector. Replace the option board cover and battery. The scrambler requires this radio have
firmware version 1.0 or higher.
VX-410 & VX-420: Remove the battery, exposing the option board cover and remove the cover. Remove the
dummy board from the radio and replace with the scrambler. Replace the option board cover and battery. The
scrambler requires this radio have firmware version 1.04 or higher.
VX-450 & VX-460: Remove the battery, exposing the option board cover and remove the cover. Plug the
scrambler onto the Options Connector. Replace the option board cover and battery. The scrambler has been
tested in firmware version 1.10.00.00.
VX-600 & VX-900: Remove the battery, exposing the option board cover and remove the cover. Remove the
dummy board from the radio and replace with the scrambler. Replace the option board cover and battery. The
scrambler requires this radio have firmware version 1.22 or higher.
VX-800: Remove the battery, exposing the option board cover and remove the cover. Remove the dummy board
from the radio and replace with the scrambler. Replace the option board cover and battery. The scrambler
requires this radio have firmware version 1.28 or higher.
VX-820/920: Remove the battery, exposing the option board cover and remove the cover. Plug the scrambler
onto the options connector. Replace the option board cover and battery. The scrambler requires this radio have
firmware version 1.19 or higher.
VX-2100/VX-2200: Remove the cover of the radio exposing the options connector. Plug the scrambler onto the
Options Connector. Replace the cover of the radio. The scrambler has been tested in firmware version 1.00.
Note: Some versions of this radio may have a large diode (D1002) installed under the options connector that can
cause a short on the unit. If this diode is present protect the option board using electrical or kapton tape.
VX-4100/VX-4200: Remove the cover of the radio exposing the options connector. Plug the scrambler onto the
Options Connector. Replace the cover of the radio. The scrambler has been tested in firmware version 1.25.
VX-4500/VX-4600: Remove the cover of the radio exposing the options connector. Plug the scrambler onto the
Options Connector. Replace the cover of the radio. The scrambler has been tested in firmware version
1.10.00.00.
VX-4000, VX-5500 & VX-6000: Remove the cover of the radio exposing the options connector. Plug the FIF-7A
(from Vertex) onto the options connector per Vertex’s instructions. Then plug the scrambler onto the FIF-7A.
Replace the cover of the radio. The scrambler requires firmware version 2.02 or higher in the V -4000. The V -
5500 has been tested with firmware version 0324. The V -6000 has been tested with firmware version 4.02.
NOTE: The scrambler should be ordered for the specific radio model. However, if you need to change radio
models please see the tables under technical notes at the end of this manual for necessary component changes.