Download K151/-K152/-K153 Avionics Standards GBAS

Avionics Standards
DME Configuration and Settings
System Configuration Settings
Table 7-1: Pulse spacing and reply delay
Channel
Pulse spacing
Pulse spacing
Reply delay
Reply delay
interrogation
mode
reply mode
1st pulse
2nd pulse
X
12 µs
12 µs
50 µs
50 µs
Y
36 µs
30 µs
56 µs
50 µs
Remote command:
[:SOURce<hw>]:BB:DME:CSUFfix on page 165
Carrier Frequency
Available only for "Channel Mode > X Channel"/ "Channel Mode > Y Channel".
Sets the carrier frequency of the signal.
Remote command:
[:SOURce<hw>]:BB:DME:FREQuency on page 166
ICAO Channel
Available only for "Channel Mode > ICAO".
Selects the corresponding channel as indicated by ICAO. Refer to chapter A.2.3, "DME
Channel Frequencies", on page 196 for an overview of the standard defined DME
transmitting frequencies.
Remote command:
[:SOURce<hw>]:BB:DME:ICAO:CHANnel on page 166
Range Distance
Available only for "DME Mode > Reply".
Sets the simulated distance between the interrogator and the transponder for reply
mode. The distance can be given in nautic miles (NM) or µs. 1 nm is 1852.01 meters
and corresponds to a run time of 12.359 µs.
The range distance and the external trigger delay are dependent according to:
"Range Distance" = ("Trigger Delay" – X/Y mode delay)/12.359 µs/nm, where
X mode delay = 50 µs, Y mode delay = 56 µs
Changing one value automatically changes the other value.
Remote command:
[:SOURce<hw>]:BB:DME:RDIStance on page 168
[:SOURce<hw>]:BB:DME:RDIStance:UNIT on page 169
Pulse Squitter
Enables/disables squitter pulses.
Operating Manual 1176.8600.02 ─ 05
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