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SECTION FIVE: Checking out the system
Page 36 957 INSTALLATION MANUAL, Revision C1
Selecting differential
options
The 957 has several settings for differential reception. To select
one, press the STAR key to display the OPTIONS/SERVICE INFO
screen, then press the RECEIVER OPTIONS key to display the
RECEIVER OPTIONS screen. The DIFFERENTIAL OPERATIONS
field offers the following options (depending on the equipment
that’s connected to the 957):
• DISABLED - to turn off all differential corrections
• RADIO BEACON - to force radiobeacon differential if the
957 is connected to a radiobeacon source (for example, the
optional 2701)
• WAAS - to force WAAS differential corrections if the 957 is
connected to a WAAS-capable unit (for example, the 2201
or optional 2701)
• AUTO - (the default setting) to prefer WAAS differential
corrections, but if the 957 is connected to the optional
2701, the 957 will automatically switch to radiobeacon
corrections if and when WAAS becomes unavailable or is
less accurate than radiobeacon
About auto-dimming
mode
When the display screen is at full brightness, if the 957 gets too
hot inside due to the outside temperature and sunlight, the
display screen will automatically dim. Auto-dimming helps
maintain the integrity of the display and reduce power
consumption when the 957 is on and running too hot for its
current environment. You can override the auto-dim function
at any time by increasing the brightness with the BRIGHTNESS
key. The 957 may dim again as required so as not to exceed the
maximum internal temperature.
Using the remote control If you point the remote directly at the 957 and are within nine
feet, you can operate all of the 957’s keys except the PWR key.
Turning off the 957
To turn off the 957, press and hold the PWR key for a few
seconds until the screen goes dark.