“Display:” field in the Display Zone. Select
SET UP using the SET UP softkey. This will
access the SET UP display screen (Figure 21-6).
You can use a customer key to program the
analyzer and operate in private mode with a
keyed radio. The customer (external) key, once
loaded, is saved in memory by the analyzer until
the operator erases it. The key is stored in non-
volatile memory and will be retained even if
power to the analyzer is turned off.
Move the cursor to the “Encrypt:” field and select
the ON softkey (Figure 21-7). Move the cursor to
the "Algorithm Sel:" field and select the desired
algorithm using softkeys (Figure 21-8). Move
cursor to the "Key Type:" field and select the
TEST KEY softkey (Figure 21-9). The analyzer
is now programmed with the Test Key.
Project 25 radios also have an internal Test Key
which is the same as the analyzer’s. Refer to the
radio service manual to determine if this key can
be activated in your particular radio. If the
internal Test Key cannot be activated, it must be
loaded from a KVL.
Follow the procedure in the KVL instruction
manual to load the 707070…..hex key into the
radio. The radio encrypter is now keyed to match
the analyzer.21-7.3 Programming with External Key
21-7.3.1 Connecting the KVL
The KVL plugs into the KVL port (Figure 21-1)
on the side of the analyzer opposite the carrying
handle. Connect the KVL to the analyzer and
then use the following instructions to load the
External Key.
CAUTION
Use only DX key loaders, or any KVL 3000 with
the ASN option. Other types of key loaders (AX,
BX or CX) may cause the encryption hardware
to malfunction. To recover, press the encrypt
reset softkey under the “Special Functions”
(SPF) menu.
Figure 21-9. Test Key Programming Display
265
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