SW
No.
Bit
No.
ITEM
Soft SW setting and function
Factory Setting
6
1
2
3
4
Signal send level
This mode is used to set the FAX signal send level.
The effective set range is –1 dBm to –16 dBm.
The values are mere estimation figures because they are
affected by DAA.
LEVEL = –8
×
Bit1 –4
×
Bit2 –2
×
Bit3 –0
×
Bit4 –1 dBm
Factory setting = –9 dBm (Set for each destination)
(When modem speed
≥
7200 bps :
If setting is –1 or –2 dBm , the level is forced to –3 dBm.)
1
0
0
0
5
Reserved
0
6
Reserved
0
7
Dial tone detection
Used to set ON/OFF of dial tone detection before dialing
for FAX sending.
When this function is set to ON, dialing is started after
detection of the dial tone.
When this function is set to OFF, dialing is started after the
set time of “Interval between OFF-HOOK and dial send”
regardless of dial tone detection.
1
8
Busy tone detection
Used to set ON/OFF of busy tone detection. When this
function is set to ON, if busy tone is detected, transmission
is interrupted and the machine enters the recall mode.
1
7
1
2
3
4
Reception sensitivity offset
Used to set the FAX signal reception level offset. The set
range is –8dBm to +7dBm.
The values are mere estimation figures because they are
affected by DAA.
When “Auto reception sensitivity adjustment” is set to
Enable, this setup is disabled.
Sensitivity offset =
–8
×
Bit1 + 4
×
Bit2 + 2
×
Bit3 + Bit4 dBm
Factory setting = 0 dBm
0
0
0
0
5
Auto reception sensitivity
adjustment
When this function is set to Enable, the Modem
automatically adjusts the received signal gain.
1
6
7
Transmission
Line Equalizer
Used to select the frequency characteristics in the signal
send level.
This function is provided to absorb the difference in
frequency characteristics between lines.
When communication errors occur frequently, another
equalizer must be selected.
0
1
8
Reserved
0
1 : ON
0 : OFF
1 : ON
0 : OFF
1 : Enable
0 : Disable
Gain (dB) for 2000Hz
Frequency
None
Equalizer
1
Equalizer
2
Equalizer
3
500
0
+1.2
–1.0
–1.5
1000
0
–0.4
–1.1
–4.1
1500
0
–0.4
–0.6
–3.6
2500
0
+0.7
+0.9
+2.4
3000
0
+2.5
+2.5
+4.9
Bit No.
None
Equalizer 1
Equalizer 2
Equalizer 3
6
0
0
1
1
7
0
1
0
1
FO-3800M
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