EFJohnson 7780 service manual Supervisory Tones

TRANSCEIVER OPERATION

currently registered on a site, “SITE x” is displayed, where “x” is the site number. If the site is locked (see following), “LOCK x” is displayed instead. The display then indicates the RSSI (Receive Signal Strength Indicator) value of the current site as “RSSI x” and then returns to displaying the channel alias.

Searching For a New Site

To display the RSSI level of the current site, press the Site Search option switch (if programmed). The current site number is then displayed as “SITE x” followed by the RSSI level as “RSSI x”. If the Site Search option switch is not pressed again, this mode is automatically exited and the normal channel informa- tion again displayed.

To scroll through the other programmed sites, repeatedly press the Site Search option switch while “SITE x” or “RSSI x” is displayed. Each time it is pressed, the information for the next site is displayed. To select the displayed site, simply do not press the switch again and that site is selected when the normal channel display returns. If site lock is on when site search is entered (see following), the radio will be locked on the new site when this function is exited.

Locking/Unlocking a Site

It is sometimes desirable to stay on the current site regardless of signal level. To lock the radio on the current site so that it does not search for another, press the Site Lock option switch (if programmed). The display then momentarily indicates “LOCK x” to indi- cate that the current site is locked (“x” is the current site number). To unlock the site, press the Lock switch again and “UNLOCK” is momentarily displayed.

When locked on a site, it is still possible to search for a different site using the site search function described in the preceding section. When a new site is found, the radio is then locked on that site.

2.6 SUPERVISORY TONES

Single Beep (Alert Tone)

•Power was turned on and a successful power-up sequence occurred (Section 2.3.2).

•The time-out timer is about to expire or the penalty timer has expired (Sections 2.3.9 and 2.4.7).

•The conversation timer is about to expire (Section 2.4.8).

•The system received your page but the paged mobile is not on the air (Section 2.5.7).

•Telephone interconnect is not operational (Section 2.5.6).

Continuous Tone (Invalid or No Acknowledge Condition)

•A transmission is being attempted on an unpro- grammed channel or a conventional channel programmed as receive-only.

•The transmitter is disabled by the busy channel lockout feature (Section 2.4.5).

•The transmitter has been disabled by the time-out timer feature (Section 2.3.9).

•The transmitter has been disabled by the conversa- tion timer (Section 2.4.8).

•An out-of-range condition exists (SMARTNET/ SmartZone only).

•A transmission is being attempted before the penalty timer has expired (Section 2.4.7).

•Dynamic regrouping has been exited but the dynamic regrouping channel is still selected (Section 2.5.13).

•The paged mobile did not acknowledge the page (Section 2.5.7).

•The message that was sent has not been acknowl- edged (Section 2.5.8).

•The status condition that was sent has not been acknowledged (Section 2.5.9).

Single Short Medium-Pitch Tone

•A valid key has been pressed. Single Short Low-Pitch Tone

•An invalid key has been pressed. Six Beeps (Recurring)

•The page was received (Section 2.5.7). Three Beeps (Recurring)

•A unit-to-unit call was received (Section 2.5.4).

November 1999
Part No. 001-7780-500	2-20