User's Manual

173
15
DATA COMMUNICATION
When the data transmission speed is set to 9600 bps,
the data signal coming from the TNC is applied exclu-
sively to the internal limiter circuitry to automatically
maintain band width.
NEVER apply data levels from the TNC of over
0.6 Vp-p. Otherwise the transceiver will not be able to
maintain the band width, and your transmitted signal
may possibly interfere with other stations.
D5SINGALEVELMETERORSYNCHROSCOPE
When using a level meter or synchroscope, adjust the
TX audio output level (DATA IN level) from the TNC as
follows.
0.4 Vp-p
(0.2 Vrms) : recommended level
0.2–0.5Vp-p
(0.1–0.25 Vrms) : acceptable level
D.OTUSINGAMEASURINGDEVICE
q Connect the TNC to the transceiver. (p. 171)
w Enter a test mode (“CAL,” etc.) on the TNC, then
transmit some test data.
e If the transceiver fails to transmit the test data, or
transmits sporadically, (TX/RX indicator doesn’t
light or it flashes):
- Decrease the TNC output level until the transmit
indicator lights continuously.
If transmission is not successful, even though the
TX indicator lights continuously:
- Increase the TNC output level.
N!DJUSTINGTHE4.#OUTPUTLEVEL
N$ATATRANSMISSIONSPEED
In the FM data mode, the transceiver can be set to a
maximum data speed of 9600 bps.
q Hold down [MENU] for 1 second to enter the Set
mode.
w Push [Y](F-1) or [Z](F-2) to select “9600bps
Mode.”
e Rotate [MAIN DIAL] to turn the 9600 bps mode ON
or OFF.
 s/. BPSDATASPEED
 s/&&$ISABLESDATA TRANSMISSION AT  BPS
This is used for only regular audio or slower
data transmission.
r Push [MENU] to save and exit the Set mode.
[][]
[MAIN DIAL][MENU]
OFF (default)
Ù 57 Ú OFF
SET 9600bps Mode
INFORMATION!
7HENh2449vISSELECTEDASTHE
“ USB2/DATA1 Func ” (63) item option in THE3ETMODETHE53"PORTSENDS2449
decode signal. In this case, you must connect a USB cable* between the transceiver’s USB port on the rear panel
and the PC. (p. 167)
*Purchase separately
s4HE53"DRIVERANDTHEINSTALLATIONGUIDECANBEDOWNLOADEDFROMOURWEBSITE
URL: http://www.icom.co.jp/world/index.html).