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Commands
Chapter 5
EuroPak-15a Receiver User Manual Rev 5
45
5.3
Command Reference
All syntax strings and command examples given in this section are in the
Abbreviated ASCII
format, unless
otherwise indicated. The tables provided show the fields necessary for all formats unless otherwise noted.
As mentioned in
, all command strings must be followed by
<Enter>
.
5.3.1
AGCMODE
Control Automatic Gain Control
1.
This command can fundamentally change the way that the receiver operates. Do not alter the default
settings unless you are confident that you understand the consequences.
2.
When the AGC mode is disabled, the
Receiver Status
word in the message header, discussed in
, reports the AGC as
GOOD
as long as the control metric used in
the feedback loop is within 7.5% of the set point.
This command controls the EuroPak-15a’s Automatic Gain Control (AGC) mechanism, which has two primary
functions:
•
To perform the analog-to-digital conversions in the receiver’s front end.
•
Mitigate jamming.
Table 15: Frequency Values for AGCMODE Command
Table 16: AGC Mode Values
ASCII
Description
L1
L1 GPS and Galileo channels
a
a. Changing GPS L1 affects Galileo L1 and
changing GPS L5 affects Galileo E5a
L5
L5 GPS and E5a Galileo channels
a
ASCII
Description
AUTO
Specifies that the default pulse width
and load values should be used.
MANUAL
Specifies that the values specified in the
pulsewidth
and
loadvalue
fields should
be used.