Packet Operation - Icom IC-2820H Instruction Manual

15
OTHER FUNCTIONS

■ Packet operation

D Data speed
For packet operation, the transceiver can be set to one of two
data speeds: 1200 bps
q Push [F•
] to display function guide.
w Push [MENU](V/MHz•SCAN)
screen.
e Rotate [DIAL] to select "PACKET" then push [MAIN•BAND].
r Rotate [DIAL] to select "PACKET BPS" then push
[MAIN•BAND].
t Rotate [DIAL] to select desired data transmission speed
from 1200 bps
[MAIN•BAND].
y Push [BACK](V/MHz•SCAN)
to frequency indication.
For 1200 bps operation—
• Disconnect the microphone plug from the microphone
connector during data transmission, otherwise the data
signal and voice signal are simultaneously transmitted.
For 9600 bps operation—
• When the transceiver is set for 9600 bps data transmis-
sion in set mode, the microphone signal is automatically
cut. Therefore, it is not necessary to disconnect the mi-
crophone plug from the connector in this case.
• When pushing [PTT] during data transmission, data trans-
mission is interrupted and voice signals have priority.
119
or 9600 bps.
(default)
to enter MENU
(Right band's)
and 9600 bps, then push
(default)
twice to return
(Right band's)
DPACKET JACK PIN ASSIGNMENT
q
e
t
q DATA IN
Input terminal for data transmit. See left for details on how
to toggle data speed between 1200
.
(G3RUH, GMSK)
w GND
Common ground for DATA IN, DATA OUT and AF OUT.
e PTT P
PTT terminal for packet operation only. Connect ground to
transmit data.
r DATA OUT
Data out terminal for 9600 bps operation only.
t AF OUT
Data out terminal for 1200 bps operation only.
y P SQL
Output is high (+5 V) when the transceiver receives a sig-
nal which opens the squelch.
• To avoid unnecessary TNC transmission, connect squelch to the
TNC to inhibit transmission when receiving signals.
• Keep audio output at a normal level, otherwise a "P SQL" signal
will not be output.
w
r
Front panel view
y
and 9600 bps
(AFSK)