98
RS-232C Command Set
Set Backlight: (OFF, ON, AUTO)
Command:
Ln
Format:
n = mode: 0 = OFF, 1 = ON, 2 = AUTO
Where:
OFF
= disabled
ON
= continuously on
AUTO = active for 30 seconds after last key press
Response:
<
CR
><
LF
>
11.2.8
IRIG-B Data Output Commands
IRIG Data IEEE C37.118.1
Command:
In
Activates the IEEE C37.118.1 IRIG-B control bits, providing two-digit year, local offset, time quality, and
notification of pending leap second and Daylight Saving Time changeovers.
Format:
n = mode: 0 = OFF, 1 = ON
Response:
<
CR
><
LF
>
IRIG Data: Local, UTC
Command:
IL, IU
Configures all IRIG-B outputs to local time or UTC.
Format:
IL = local time
IU = UTC
Response:
<
CR
><
LF
>
Return Elevation
Command:
LH
Returns the current antenna elevation referenced to the WGS-84 datum.
Response: nnnnn.nn
<
CR
><
LF
>
Where:
nnnnn.nn = -1000.00 to +18000.00 meters.
Return Latitude
Command:
LA
Returns the current antenna latitude.
Response: xdd:mm:ss.sss
<
CR
><
LF
>
Where:
x
= hemisphere: N = North, S = South
dd
= degrees
mm
= minutes
ss.sss
= seconds
<
CR
>
= Carriage Return = Hex 0D
<
LF
>
= Line Feed = Hex 0A
Return Longitude
Command:
LO
Returns the current antenna longitude.
Response: xddd:mm:ss.sss
<
CR
><
LF
>
Where:
x
= hemisphere: W = West, E = East
ddd
= degrees
mm
= minutes
ss.sss
= seconds
<
CR
>
= Carriage Return = Hex 0D
<
LF
>
= Line Feed = Hex 0A