General Dynamics R2600 Series, Operator'S Manual, Page: 353 / 402

traffic. This section describes how to enable
voice channel encryption and how to setup
encryption keys.
25-3.1 SET UP Encryption Display
The SET UP display places the analyzer in
encryption setup mode and allows the operator
to select the desired algorithm. The SET UP
display is accessed from the Display Zone. To
use SET UP display, move the cursor to the
“Display:” field and select SET UP using the
SET UP softkey. The Display Zone will show
a menu of SET UP options as shown in Figure
25-2.
25-3.1.1 Encrypt
The analyzer operates in either clear or
encrypted modes. In the Display Zone, scroll
the cursor to the “Encrypt:” field and select ON
as shown in Figure 25-3 for encrypted PROJ 25
TRK, or OFF for clear PROJ 25 TRK
operation.
25-3.1.2 Algorithm Select
Within the SET UP display, the type of
algorithm can be selected. Algorithm is a term
that describes the method of coding data or
audio so that only equipment having the same
algorithm selected and the same key are able to
exchange voice and data information. The
analyzer includes several algorithms recognized
by radios using Project 25. You will need to
select these algorithms to use for processing
messages.
In the Display Zone, move the cursor to the
“Algorithm Sel:” field as shown in Figure 25-4.
Softkeys will provide for selection of the
available algorithms. Select the appropriate
algorithm.
Figure 25-2. SET UP Display Screen
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