4.4.2. Parameters
Byte 1
FUNCTION
COMMENTS
0
1
Initial Tx modem rate
Bit 1 Bit 0 Setting
0 0 9,600 bps
0 1 7,200 bps
1 0 4,800 bps
1 1 2,400 bps
If training with a particular remote terminal
always takes too long, the initial modem rate
may be too high. Reduce the initial Tx modem
rate using these bits.
2
3
4
5
Tx level
Bit 2 3 4 5 Level
(dBm)
0 0 0 0 0
0 0 0 1 -1
0 0 1 0 -2
0 0 1 1 -3
and so on until
1 1 1 1 -15
If communication with a particular remote
terminal often contains errors, the signal level
may be inappropriate. Adjust the Tx level for
communications with that terminal until the
results are better.
6
Not used
Do not change the factory setting.
7
Dedicated transmission parameters
for this Quick/Speed Dial number
0: Disabled 1: Enabled
0: The parameters in these three bytes will be
ignored. The current settings of the relevant bit
switches, NCU parameters, and RAM addresses
will be used.
1: The parameters in these three bytes will be
used when transmitting to the fax number
stored in the Quick Dial Key or Speed Dial Code
that these bytes are allocated to.
Byte 2
FUNCTION
COMMENTS
0
DIS/NSF detection method
0: First DIS or NSF
1: Second DIS or NSF
Set this bit to 1 if echoes on the line are
interfering with the set-up protocol at the start of
transmission. The machine will then wait for the
second DIS or NSF before sending DCS or NSS.
1
ECM during transmission
0: Enabled
1: Disabled
For example, if ECM is switched on but is not
wanted when sending to a particular terminal,
set this bit to 1.
2
Not used
Do not change the factory settings.
3
4
Continued on the next page
November 30th, 1991
SERVICE TABLES AND PROCEDURES
DEDICATED TRANSMISSION PARAMETERS
4-28
Summary of Contents for FAX500
Page 1: ...FAX550 SERVICE MANUAL...