A.W. Communication Systems DRC1 Configuration Handbook - page 16
Installer Password
This item sets the PIN code lock to prevent unauthorised access to the installation menu. 4
digits may be set. Press [
menu
] to access this item. Password is set to NONE by default, enter
4 digits then press [
menu
] to store the selection, then [
clear
] twice to exit the menu system
and implement the changes.
Selective Calling System.
The DRC1 has been equipped with a very flexible selective calling system. The number of
digits, digit purpose, and digit position within a string can all be configured. The menu system
provides prompts as the system is programmed, but within the limitation of the two line LCD
display.
Turning the Status facility on or off affects the rest of the selective calling process. The
number of status digits programmed in that step is checked by the system and an error
message issued if the quantity disagree. For example, if status is turned off, and the
programmer then enters status digits in the code field, the system will inform the programmer
“status digits bad”.
In essence, the code field can consist of variable digits, fixed digits, and status digits. The
system uses numbers for fixed digits, the # symbol for variable ident digits, and the * symbol
for variable status digits. The position of the # and * within the string determines where the
DRC1 expects to find the ident and status numbers
Here are a few examples:-
In a system requiring 99 idents and no status signalling, the programmer will decide to fix the
first 3 digits in a five-digit system. The fixed digits provide a filter when the radio frequency
is shared with other users. By entering 123## in the RX code field the programmer has set
123 as fixed digits, and the DRC1 will not decode any number not prefixed in this way. The
## digits are variable and indicate the mobile identity.
In the above system to add a status digit but keep the overall number of digits at 5, then the
fixed number would be reduced by one place, and a status digit added, thus.
12##*, or leading status *12##.
The relationship between the total number of digits, and the position within the string of the *
and # symbols holds true for all of the selective calling programming, and so no further
individual examples are given .
The Menu Items For Selective Calling
In the install menu, items [
Selective Calling Ident Size
], and [
Selective Calling Status Size
]
determine how many digits the DRC1 expects for these functions, not including any fixed
digits you may use. These options do not limit the overall number of digits used in the total
string.
From the user menu select RX call