Agcmode - Novatel WAAS G-III User Manual

Commands
4.4.1

AGCMODE


The AGCMODE 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.
This command controls the automatic gain control (AGC) mechanism for the receiver. The AGC controls the
analog voltage of the down converted Radio Frequency (RF) signal sent to the Analog-to-Digital Converter
(ADC). Precise control of the voltage of the analog signal is required to optimize receiver tracking
performance. Setting this command to manual dictates the gain used to condition the input signal and may
degrade or prevent the receiver from acquiring or tracking all signals on a specified frequency.
Valid States:
Valid Modes:
Acceptable Ports:
Syntax:
AGCMODE frequency mode [pulsewidth modulus]
Example:
AGCMODE L5 MANUAL 40 50
Field Field Name
1 frequency
2 mode
3
pulsewidth
a
4
modulus
a. The pulsewidth value must be less than or equal to the modulus value.
WAAS G-III Reference Receiver User Manual Rev 1
Configuration, Operational
Normal
Data
Specifies the signal type to which you want to apply
the command.
Specifies whether to use the default or custom
values for the pulse width and modulus.
Select AUTO to use the default values for pulsewidth
and modulus.
Select MANUAL to use custom values for pulsewidth
and modulus. When you select MANUAL, you must
enter values for pulsewidth and modulus.
VARF pulse width for manual mode.
a
This number has no effect when in auto mode.
[Optional]
VARF modulus for manual mode.
This number has no effect when in auto mode.
[Optional]
Description
Chapter 4
Range Precision
L1
L2 N/A
L5
auto
N/A
manual
35-262144 Ulong
35-262144 Ulong
45