Icom IC-7760 Advanced Manual page 100

11
OTHER FUNCTIONS
About the RF/SQL Control
You can set the
AF RF/SQL
following item.
» SET > Function > RF/SQL Control
MENU
• Auto: While in the AM or FM mode, used only
as a squelch control.
While in the SSB, CW, RTTY, or PSK
mode, used only as an RF gain control.
• SQL: Used as only a squelch control.
L RF gain is fixed at maximum sensitivity.
• RF+SQL: Used as an RF gain control, and a noise
squelch or S-meter squelch.
When using as an RF gain/squelch control
Squelch is open
RF gain
adjustable range
"RFG" is displayed
Minimum RF gain
When using as an RF gain control
(Squelch is fixed open: SSB, CW, RTTY, PSK only)
Maximum RF gain
RF gain
adjustable range
"RFG" is displayed
Minimum RF gain
When using as a squelch control
(RF gain is fixed at maximum.)
Noise squelch
threshold
Squelch is open
(outer) control type in the
Noise squelch (FM mode)
Maximum RF gain
S-meter squelch
adjustable range
Maximum S-meter
squelch
Maximum RF gain
range
Noise squelch (FM mode)
S-meter squelch
threshold
S-meter squelch
adjustable range
Maximum S-meter
squelch
About "USB SEND/Keying"
You can control transmit, receive, and CW/RTTY
keying from the PC through the USB port.
Select the control port to be used for communication
between the transceiver and PC in "USB SEND,"
"USB Keying (CW)," and "USB Keying (RTTY)"
according to your operating needs.
» SET > Connectors > USB SEND/Keying
MENU
The IC-7760 has two virtual COM ports, A and B.
The transmit and receive control (USB SEND), CW
Keying, or RTTY (FSK) Keying signals from the PC are
assigned to the DTR/RTS terminals in the virtual port.
L When connecting to a USB port on your PC that is
installed the USB driver, USB (A) and USB (B) are named
"IC-7760 Serial Port A (CI-V)" and "IC-7760 Serial Port B."
USB SEND
USB Keying (CW)
USB Keying (RTTY)
• OFF: Turns OFF the function.
• USB (A) DTR: Uses the DTR terminal on USB (A).
• USB (A) RTS: Uses the RTS terminal on USB (A).
• USB (B) DTR: Uses the DTR terminal on USB (B).
• USB (B) RTS: Uses the RTS terminal on USB (B).
CPU
USB SEND
USB Keying
(CW)
USB Keying
(RTTY)
11-2
(Default: OFF)
(Default: OFF)
(Default: OFF)
TXD
IC-7760
Serial Port A
RXD
Virtual
(CI-V)
COM
RTS
port A
DTR
TXD
[USB B] port
RXD
Virtual
(Controller's rear panel)
COM
RTS
port B
IC-7760
DTR
Serial Port B