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15
OTHER FUNCTIONS
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
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 oscilloscope, 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 (0.1–0.25 V rms)
: acceptable level
2. When NOT using a measuring device.
q
Connect the transceiver to a TNC.
w
Enter a test mode (“CALL”, etc.) on the TNC, then trans-
mit some test data.
e
When the transceiver fails to transmit the test data or
transmits sporadically (TX indicator doesn’t appear or
flashes):
- Decrease the TNC output level until the transmit indi-
cator lights continuously.
When transmission is not successful even though the
TX indicator lights continuously:
- Increase the TNC output level.
D
Packet operation band selection
Both bands, or either the left or right band only, can be spec-
ified for packet operation to suit your preference.
q
Push [
F
•
] to display function guide.
w
Push [MENU](V/MHz•SCAN)
(Right band’s)
to enter MENU
screen.
e
Rotate [DIAL]
to select “PACKET” then push
[MAIN•BAND].
r
Rotate [DIAL] to select “PACKET BAND” then push
[MAIN•BAND].
t
Rotate [DIAL] to select desired band from MAIN
(default)
,
left (L) and right (R), then push [MAIN•BAND].
• MAIN
: The main band is used for packet op-
eration.
• Left (L)/Right (r) : The selected left or right band can only
be used for packet operation.
y
Push [BACK](V/MHz•SCAN)
(Right band’s)
twice to return
to frequency indication.
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