LLZ 421
Operation and Maintenance Repair
ILS 420
6−55Ed. 01.10
SOAC
J10 J9 J8 J7
J4
J1
J3
J5
J2 J47 J6 J17 J18 J16 J12
J13
J15
J14
J11
J20
J21
R485
TP65 TP59 TP63 TP64 TP15 TP17 TP16 TP11 TP12 TP9 TP8 TP3 TP4 TP56
TP74 TP76 TP72
TP41 TP77 TP75 TP73 TP51
TP57 TP58 TP55 TP29 TP26 TP27 TP31 TP21 TP23 TP20
TP53 TP47 TP49 TP37 TP39 TP34TP30
TP67
TP69
TP70
TP68
TP71
GND
GND
JP41
JP43
12
R275
R286
R327
R345
R343
R353
R240 R217
R318 R305
R312
TP24 TP25 TP22 TP19
R133
R105
R90 R62 R43
R2 R511
R25
R382
R372
R383
R189
R185
R386
R379
R377
R166
R150
R146
R123 R136
R499
R524
TP62 TP66 TP60 TP61 TP18 TP14 TP13 TP10 TP7 TP6 TP2 TP1 TP5
NFM CRS Posn.
CRS Width
CRS CSB
Stby
CRS SBO
Stby
CLR Width (1)
CLR SBO
Stby
CLR CSB
Stby
open
set
43
21
3
1
42
3
1
42
3
1
42
2
4
13
43
21
2
4
13
43
21
43
21
43
21
3
1
42
2
4
13
43
21
J19
12
2
4
13
2
4
13
2
4
13
2
4
13
RFcwCLR 2 RFcwCRS 2
RFcwCRS 1
RFcwCLR 1
2
4
13
2
4
13
2
4
13
2
4
13
2
4
13
3
1
42
2
4
13
3
1
42
2
4
13
1
3
24
43
21
43
21
12
34
12
34
12
34
43
21
43
21
12
34
12
34
12
34
2
4
13
2
4
13
2
4
13
shielding cover removed, jumpers normally not visible
JP1
JP6
JP25
JP30
JP20
JP22
JP23
JP24
JP16
JP17 JP18
JP19
JP26
1
2
34
12
34
JP12
JP13
JP14
JP15
12
34
JP11
JP7
JP8 JP9
JP10
JP46
JP31JP32
JP33 JP34
JP35
JP36JP37
JP38 JP39
JP40
JP44
JP45
JP2
JP3
JP4
JP5
JP27
JP28
JP29
A2 path (GP) CSB A2 (GP)
Stby
CLR Width (2)
(LLZ) (LLZ)
15 16
NOTE: The jumper setting above is an example setting for LLZ−2F. Actual setting depends on installation !
If a single frequency (1F) installation is used jumper J1 and J6 have to be set to 1−3, 2−4 !
Jumper POSITION DEFINITION REMARKS
RFcw input
JP1 1−2, 3−4 RFcw from CLR SYN TX2 (for 1F: 1−3, 2−4) default setting ILS 420 (2F)
JP6 1−2, 3−4 RFcw from CLR SYN TX1 (for 1F: 1−3, 2−4) default setting ILS 420 (2F)
JP25 1−2, 3−4 RFcw from CRS SYN TX2 default setting ILS 420 (2F)
JP30 1−2, 3−4 RFcw from CRS SYN TX1 default setting ILS 420 (2F)
NFM (1)
JP22 1−2, 3−4
1−3, 2−4
10 dB attenuator bypassed
10 dB attenuator enabled
default setting
−
JP23,JP24
JP23,JP24
1−2, 3−4
1−3, 2−4
+15 dB gain amplifier enabled,
−5 dB attenuator disabled
+15 dB gain amplifier bypassed,
−5 dB attenuator enabled
−
default setting
CRS Posn./A1
JP20 1−2, 3−4
1−3, 2−4
portion of A1 RF input available
portion of A1 RF not available
used for GP applications
default setting LLZ
JP16 1−2, 3−4
1−3, 2−4
10 dB attenuator bypassed
10 dB attenuator enabled
default setting
−
JP17 1−2, 3−4
1−3, 2−4
10 dB attenuator bypassed
10 dB attenuator enabled
default setting
−
JP18,JP19
JP18,JP19
1−2, 3−4
1−3, 2−4
+15 dB gain amplifier enabled,
−5 dB attenuator disabled
+15 dB gain amplifier bypassed,
−5 dB attenuator enabled
−
default setting
6 Stby and On−Air Combiner (SOAC) 120621−0001 (83138 27100) 1 of 3
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