Thales 421, Operation And Maintenance, Page: 65 / 256

LLZ 421
Operation and Maintenance Installation
ILS 420
2−37
Ed. 01.10 SOAC
LLZ
ENV. SENSORS, DME,
SK4/AF1
PL1/Port3
24009 xxxxx
DME
415/435
LGM2/DME
RS 232
24009 xxxxx
Adapter
LLZ Shelter
GP Shelter
97240 28166
cable with
open end
AF distribution box
cable with
open end
data cable laid
airport−side
AF distribution box
ID
ID
GP
DETECTOR IN
Fig. 2−32 Collocation ILS 420 LLZ/GP with DME 415/435, overview
33
15
32
14
14
1
15
2
PIN
SIGNAL
DME KEY A
DME KEY B
GND DME
DME INTERLOCK A
DME INTERLOCK B
DIDFAFL
DAFSTH
DIDFAFH
PIN SIGNAL
14
1
15*
2*
33
15
32*
14*
25pin, female
LLZ 421
2)
2a
2b
3a
3b
3a
3b
2a
2b
Connector SK4/AF1
DME 415/435
DAFSTL
23 23 1)
3)
3)
37pin, female
Connect. ENV. SENSORS,DME,DETECTOR IN
AF distribution box 3)
AF distribution box 3)
data cable laid
airport−side
NOTE:
1) Ground not connected between LLZ (pin 23, or alternatively 4,6,25) and DME
2) Shielding of data cable (placed at disposal airport side) connected one−sided to ground
3) Shielding of ID cable connected one−sided to ground on connector shell
24009 xxxxx
(ID cable, approx. 4.5 m)
24009 xxxxx
(ID cable, approx. 4.5 m)
* normally not used
Fig. 2−33 Ident connection LLZ 421 to DME 415/435
2
3
7
SIGNAL PIN
RS232
PIN SIGNAL
2
3
5
RS232
TXD
RXD
PGND
2
3
5
2
3
5
RX
TX
GND
97243 28211
97240 28166 (9pin, female/female, 3 m)
DME 415/435 GP 422
9pin, male
connector LGM2/DME
25pin, male
connector PL1/Port 3
(Adapter, male/female)
NOTE:
The adapter can be ommitted, if a RS232 cable is used with 1:1 through connection (not crossed)
Fig. 2−34 RS 232 connection GP 422 to DME 415/435