Icom IC-2800H - Manual (Page 77)

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15
OTHER FUNCTIONS
D Adjusting the transmit signal output from
the TNC
When setting data transmission speed to 9600 bps, the data
signal coming from the TNC is applied exclusively to the in-
ternal limiter circuitry to automatically maintain band width.
NEVER apply data levels from the TNC of over 0.6 V p-p, oth-
erwise the transceiver will not be able to maintain the band
width and may possibly interfere with other stations.
1. When using a level meter or synchroscope, adjust the
TX audio output level (DATA IN level) from the TNC as
follows.
0.4 V p-p (0.2 V rms) : recommended level
0.2 V p-p–0.5 V p-p (0.1 V rms–0.25 V rms) : acceptable level
2. When NOT using a measuring device.
q Connect the transceiver to a TNC.
w Enter a test mode (“CAL”, etc.) on the TNC, then transmit
some test data.
e When the transceiver fails to transmit the test data or trans-
mits sporadically (TX indicator doesn’t appear or flashes):
- Decrease the TNC output level until the transmit indicator
lights continuously.
When transmission is not successful even though the TX
indicator lights continuously:
- Increase the TNC output level.
■ Video monitor function
The LCD can be used as a video monitor for an NTSC or PAL
video signal.
NTSC : U.S.A., Australia, Asia, Latin America, Korea and
Taiwan versions
PAL : Europe and Italy versions
q Push [DISP] to enter display set mode.
• Push [CHG/L] if [DISP] is not displayed.
w Push [ ] to monitor a video signal.
• The video signal is displayed on the LCD.
e Push any switch except [POWER] to return to display set
mode.
r Push [ ï ] to exit display set mode.
to
[VIDEO IN]