Motorola APX 4000, Базовое руководство по обслуживанию

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7-4 Encryption : Erase an Encryption Key
7.4.2 Use the Keypad
To select an index using the keypad:
1. Press
>
until the display shows “ KSet ”.
2. Press
{
,
|
, or
}
directly below “ KSet ”. The display shows the last user-selected and
-stored index.
3. Using the keypad, enter the number of the desired key.
NOTE: If a deleted key is selected, “ ERASED KEY ” will be displayed.
4. Press
{
,
|
, or
}
directly below the desired menu.
• SEL = saves the newly selected key and returns to the home display.
5. Press
o
, the PTT button, or
{
,
|
, or
}
directly below “ Exit ”, or turn the
Multi-function knob to exit this menu.
• If the selected key is erased, the display shows “ KEY FAIL ” and the radio sounds a
momentary keyfail tone.
• If the selected key is not allowed, the display shows “ ILLEGAL KEY ” and the radio sounds a
momentary illegal key tone.
7.5 Erase an Encryption Key
This section describes two methods for erasing an encryption key.
7.5.1 Method 1 – Key Zeroization (Multikey Only)
To zeroize an encryption key:
1. Press
>
until the display shows “ Eras ”.
2. Press
{
,
|
, or
}
directly below “ Eras ”. The display shows the last user-selected and
-stored encryption key.
3. Press
^
or
v
to scroll through the list of encryption keys.
4. Select single encryption key or all encrytion keys deletion from the “ OPTN ” menu.
5. Press
o
, the PTT button, or
{
,
|
, or
}
directly below “ Exit ”, or turn the
Multi-function knob to exit this menu.
• If the selected key is erased, the display shows “ KEY FAIL ” and the radio sounds a
momentary keyfail tone.
• If the selected key is not allowed, the display shows “ ILLEGAL KEY ” and the radio sounds a
momentary illegal key tone.
7.5.2 Method 2 – All Keys Erased
To erase all encryption keys at one time:
With the radio on, press and hold the Top Side button and, while holding this button down,
press the Top button.
NOTE: DO NOT press the Top button before pressing the Top Side button unless you are
in an emergency situation. This sends an emergency alarm.
Before the keys are erased, the display shows “ PLEASE WAIT ”.
When all the encryption keys have been erased, the display shows “ ALL KEYS ERASED ”.