JRC JHS-770S Instruction Manual page 38

Names and Functions
USER ････ User defined key. Registers a desired and assignable menu (e.g. frequently using).
・
DSC
Shortcut key to a DSC routine call menu.
・ ････
RTN
・ CH16 ････ Sets the radiotelephone to the priority channel (CH16) quickly.
3. MENU key
Displays menu list.
4. Jog dial
- On the status display, rotating the jog dial will change the channel.
- On a menu or popup screen, rotating the jog dial will move the cursor position or screen contents.
When selecting a button or an item on the screen, rotate the jog dial until the cursor is on it and then
press the jog dial.
Note
The jog dial is also used to obtain access right by pressing it when multiple controllers are
connected to the VHF transceiver and the access right is occupied by another controller.
5. Handset connector
6. DISTRESS key (Under a clear cover with spring)
When in distress, sends a DSC distress call after pressing for 4 seconds.
7. SQL (Squelch) control
Adjusts squelch level.
8. DIM (Dimmer) key
Adjusts a dimmer level (Max
power off by pressing it with
PWR
CONT
Note
The adjusted dimmer level is not saved. So when the controller is powered off and on
again, the dimmer level is always set to the Typ (default).
9. PWR/CONT (Power/Contrast) key
Turns on the equipment or makes the controller standby from the sleep mode. And after turned on, this key
is also used to adjust the LCD contrast .
10. VOL (Volume) control
Adjusts built-in loud speaker volume.
11. ALM (Alarm) lamp
Lights up red on any malfunction detected in the equipment, or blinks red on sending or receiving a DSC
distress call. And lights up green while the controller is in the sleep mode.
12. CANCEL key
Cancels menus or stops alarms. Additionally, opens the squelch temporally while pressing it on the status
display. (channel monitor function).
13. Handset
When using in the radiotelephone mode, press and hold the PTT key to talk.
14. Cradle (for handset)
2-2
Typ Min off) of LCD display and key switch. Additionally, used to
PWR
key at the same time (a confirmation screen will be displayed).
CONT