Page 4-22
500W Series Installation Manual
Rev. D
190-00357-02
4.10 DME Tuning (GNS 530W Only)
4.10.1 DME Tuning Function
The GNS 530W can channel a DME based on the tuned VLOC frequency. The GNS 530W outputs 2 of
5, BCD or Slip parallel DME and King Serial DME channeling format. When DME COMMON is held
low, the GNS 530W actively tunes the DME.
4.10.2 DME Tuning Electrical Characteristics
4.10.2.1 Parallel DME Tuning
Pin Name
Connector
Pin
I/O
NAV PAR DME - 8MHZ
P5006
14
Out
SER DME – CHAN REQ/PAR DME - 4MHZ
P5006
20
Out*
SER DME – RNAV MODE/PAR DME – 2MHZ
P5006
21
Out*
NAV PAR DME - 1MHZ
P5006
33
Out
NAV PAR DME - 800KHZ
P5006
37
Out
NAV PAR DME - 400KHZ
P5006
39
Out
NAV PAR DME - 200KHZ
P5006
40
Out
NAV PAR DME - 100KHZ
P5006
42
Out
NAV PAR DME - 50KHZ
P5006
43
Out
NAV DME COMMON
P5006
22
In
* These pins are outputs when the GNS 530W 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
μ
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
Ω
. These inputs are considered inactive if the voltage to ground is 11-33 VDC.
4.10.2.2 King Serial DME Tuning
Pin Name
Connector
Pin
I/O
NAV SER DME – DATA
P5006
19
Out
NAV SER DME – CLOCK
P5006
18
Out
SER DME – CHAN REQ/PAR DME - 4MHZ
P5006
20
In*
SER DME – RNAV MODE/PAR DME – 2MHZ
P5006
21
In*
NAV DME COMMON
P5006
22
In
* These pins are inputs when the GNS 530W is configured for King Serial DME tuning
When NAV SER DME – DATA or NAV SER DME – CLOCK is asserted high and driving a 360
Ω
load, the driver output voltage is not less than 8 V, and when asserted low is not 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
Ω
. 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.
Summary of Contents for GNS 530W
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