Enable Secure On Desired | To actually use the secure option, Secure must be enabled on the |
Channels | channels for which it is desired. A channel can be strapped to secure- |
| only, or |
| For conventional channels, proceed as follows: Press F4 at the Main |
| Menu to see the CHANGE/CREATE/VIEW menu. Press F6 to see |
| Conventional Systems, Personalities, MDC, Options. Press F3 to see |
| Conventional Personalities, Options. Press F6 to see the SECURE |
| OPTIONS screen. Press Tab to select the Secure/Clear Strapping field. |
| For trunking channels, proceed as follows: Press F4 at the Main Menu |
| to see the CHANGE/CREATE/VIEW menu. Press F4 to see Trunking |
| Systems, Personalities, Call Lists, Options screen. Press F4 to see |
| Trunking Personalities: Talk Groups, Emergency Options, etc. Press Tab |
| to select the Strapping field. An Announcement Group must be |
| specified for the Strapping parameter to appear. This selects the |
| Announcement Group Strapping. Press F7 to select Talk Groups. Press |
| Tab to select the strapping of each Talk Group. |
Other Secure Options | There are other secure options that can be changed on a |
| basis, such as: Proper Code Detection, Transmit XL, or CFB. For |
| conventional channels, these options are found on the same screen as |
| Secure/Clear Strapping (F4/F6/F3/F6). These options are XL Transmit, |
| Scan Holdoff Strapping, RX Modulation, and Proper Code Detect. For |
| trunking channels, the only selectable option is Proper Code Detect. |
| This can be found by going to the MORE OPTIONS screen (F9) from |
| the screen that was used to select secure/clear Strapping for trunking |
| channels. |
Secure Retrofit Tuning | After installing a |
| deviation and the secure RX discriminator level must be tuned. Follow |
| the procedure outlined in Section 9 “Secure Alignment Procedure” |
| in this publication for the tuning of these two |
| alignments. |
| The TX deviation balance (compensation) does not need to be |
| performed as part of the secure retrofit procedure. Use the transmit |
| deviation balance (compensation) procedure as outlined in this |
| appendix, only when a complete radio alignment is being performed |
| with a secure board installed. |
Secure Alignment
Procedure
General | For optimum radio performance, the secure transmit deviation and |
| the receive discriminator level must be set. Refer to Section 5, “Radio |
| Alignment Procedure”, for a description of the radio alignment test |
| setup, an RSS service menu overview, and for general radio tuning |
| procedures. All normal radio tuning should be performed in the |
| proper sequence before proceeding with secure tuning. |
| Note that the transmit deviation balance (compensation) tuning must |
| be performed differently if a secure board is installed in the radio. |
| Follow the procedure changes outlined below when tuning transmit |
| deviation balance, and complete the normal tuning. Then proceed |