E.F. Johnson Company 5300 ES Series, Руководство по эксплуатации

Страница: 77 / 142

March 2008 5300 ES Series Mobile Radio Operating Manual 5-25
Conventional Features
RX NAC - Selects the receive Network Access Code (NAC) which can be any number
from 1-4095. This number is displayed in hexadecimal from 000-FFF. Rotate and press
the Select switch to enter the desired code. The displayed code is stored after the last
digit is programmed. If an invalid code is entered, a beep sounds, “INVALID” is briefly
displayed, and the NAC editing mode continues to be selected.
TX NAC - Selects the transmit NAC the same as RX NAC above.
TX POWER - Selects the desired power output level. Rotate the Select switch to scroll
through the following choices. When the desired setting is displayed, store it by
pressing the Select switch.
- POWER High - High transmit power.
- POWER Low - Low transmit power.
- POWER SW - Switchable power selectable by the High/Low power switch. This
choice is not available if that switch is not programmed.
TX TIMER - Enables or disables the time-out timer on the current channel. Rotate the
Select switch to toggle between the ON and OFF mode, and when the desired setting is
displayed, store it by pressing the Select switch.
Channel Alias - Programs the alias for the channel. Up to ten characters from A-Z and
0-9 and spaces can be entered. Press Select switch once to display the current alias and
then press it again or rotate it to program a new alias. Rotate the Select switch to display
the desired character and then press it to move to the next position. The number is
stored after the Select switch is pressed with the last position selected.
Note
The next two parameters are programmed only if the radio is programmed for encryption.
Strapping - Selects the encryption strapping mode for the channel as Clear, Secure, or
Switched.
Key Select - Selects the encryption key for the channel if applicable. The key storage
location of 0-63 (PID) or 1-64 (SLN) is selected (see Section 10.2.2). If no keys are
programmed, “NO KEYS” is displayed.
CHAN SPACE (Analog Only) - Selects either wide or narrow band channel spacing on
analog channels only. Rotate the Select switch to toggle between “WIDE” and
“NARROW”, and when the desired setting is displayed, store it by pressing the Select
switch.
Note
The channel spacing is not set with P25 channels because it is always narrow, and the
squelch cannot be changed because the setting is critical for proper receiver operation.
SQ ADJUST (Analog Only) - Changes the preset squelch setting on that channel. The
default setting is “0” and values of –7 to +7 can be selected. Increasing this setting
7 causes the squelch to open sooner so that weaker signals can be received,
and decreasing it toward –7 causes the opposite to occur.