ZETRON 748, Техническое руководство

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Feature Set Reference
025-9368H 187
Decode
The Model 748 has the ability to decode CTCSS and DCS. The first 50 users are CTCSS (67.0 Hz -
254.3 Hz). Users 51 - 154 are DCS codes. All 154 tones and codes are always in the “Decode table”
and do not require programming. Airtime records are based on the
Decode tone or code.
To find the user number for a specific CTCSS tone or DCS code, see “CTCSS Tones” or “Digital
Squelch Codes” in Section 7.
Encode
The Model 748 has the ability to encode CTCSS or DCS when it decodes a valid CTCSS tone or
DCS code. The most common use is to encode the same tone or code that is being decoded. The
Model 748 can do cross-tone or cross-code encoding using this command. When the Model 748
decodes a CTCSS tone or DCS code, it takes the user number (corresponding to the decoded tone or
code) and looks up the encode tone or code programmed and then starts encoding that tone or code.
To program the encode for CTCSS, it is not necessary to enter the decimal point (i.e. enter 67 for
67.0 Hz, or 118 for 118.8 Hz), though you may if you wish. When programming the encode for
DCS, start the code with a D and then enter the actual DCS code (i.e. D023 for 023). To clear a tone
or code, simply type “0” and press
ENTER
.
How to program it:
Access the Model 748 through your direct connected PC or terminal, or remotely from your PC
connected to a modem via the Model 748's internal modem.
Once connected to the Model 748 and the Main Menu is on the screen, type “2” and press ENTER ,
and the Repeater Panel Menu will appear. Type “2” and press ENTER , the Repeater Panel User
Menu will be displayed using the currently selected user's data. Select the User number you wish to
program (see “User Range” later in this section). Select the item number for
Encode and press
ENTER .
The current setting for Encode will appear along with a message instructing you to enter the new
encode tone or code. Enter the new encode tone or code and press ENTER when you have finished.
By default, all users 1 - 154 have matching encode tones or codes to the fixed decode tone or code.
Encode is supported by block or range programming. See “User Range” later in this section for
details.