Dme Tuning (Gns 430W Only) - Garmin GPS 400W Installation Manual

4.10 D ME Tuning (GNS 430W Only)
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4.10.1 D ME Tuning Function
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The GNS 430W can channel a DME based on the tuned VLOC frequency. The GNS 430W outputs 2 of
5, BCD or Slip parallel DME and King Serial DME channeling format. When DME COMMON is held
low, the GNS 430W actively tunes the DME.
4.10.2 D ME Tuning Electrical Characteristics
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4.10.2.1 P arallel DME Tuning
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NAV PAR DME - 8MHZ
SER DME – CHAN REQ/PAR DME – 4 MHz
SER DME – RNAV MODE/PAR DME – 2 MHz
NAV PAR DME – 1 MHz
NAV PAR DME – 800 kHz
NAV PAR DME – 400 kHz
NAV PAR DME – 200 kHz
NAV PAR DME – 100 kHz
NAV PAR DME – 50 kHz
NAV DME COMMON
* These pins are outputs when the GNS 430W is configured for 2 of 5 parallel DME tuning.
For each of the parallel DME tuning discrete outputs, the driver output voltage is not more than 1.0 V
while sinking 20 mA. The maximum off state leakage current with respect to ground is less than 10 A.
NAV DME COMMON must be pulled low to indicate to the NAV module that it is the device channeling
the DME.
NAV DME COMMON is considered active if either the voltage to ground is < 1.9 V or the resistance to
ground is< 375 . These inputs are considered inactive if the voltage to ground is 11-33 VDC.
4.10.2.2 K ing Serial DME Tuning
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NAV SER DME - DATA
NAV SER DME - CLOCK
SER DME – CHAN REQ/PAR DME - 4MHZ
SER DME – RNAV MODE/PAR DME – 2MHZ
NAV DME COMMON
* These pins are inputs when the GNS 430W is configured for King Serial DME tuning
When NAV SER DME – DATA or NAV SER DME – CLOCK is asserted high and driving a 360
the driver output voltage is not less than 8 V, and when asserted low shall not be greater than 10 mV.
SER DME – CHAN REQ/PAR DME – 4MHZ, SER DME – RNAV MODE/PAR DME – 2MHz, and
NAV DME COMMON are considered active if either the voltage to ground is < 1.9 V or the resistance to
ground is< 375 . These inputs are considered inactive if the voltage to ground is 11-33 VDC.
NAV DME COMMON must be pulled low to indicate to the NAV module that it is the device channeling
the DME.
400W Series Installation Manual
190-00356-02
Pin Name
Pin Name
Connector Pin
P4006 14
P4006 20
P4006 21
P4006 33
P4006 37
P4006 39
P4006 40
P4006 42
P4006 43
P4006 22
Connector Pin
P4006 19
P4006 18
P4006 20
P4006 21
P4006 22
I/O
Out
Out*
Out*
Out
Out
Out
Out
Out
Out
In
I/O
Out
Out
In*
In*
In
load,
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