4
12.4
O
VER
-
TEMPERATURE CUT
-
OFF
...............................................................................................................................................20
12.5
O
VER
-
CURRENT CUT
-
OFF
.......................................................................................................................................................21
12.6
I
G
2
BLINKS FAST
-
N
O PLATE VOLTAGE
..................................................................................................................................21
12.7
S
PARKS
/
D
ISCHARGES IN
RF
AREA
........................................................................................................................................21
12.8
SWR
CUT
-
OFF
.........................................................................................................................................................................21
12.9
F
REQUENT OVER
-
DRIVE PROTECTION CUT
-
OFF
......................................................................................................................21
12.10
T
UBE REPLACEMENT
..........................................................................................................................................................21
13
WARRANTY / SERVICE ......................................................................................................................................................21
14
GLOSSARY..............................................................................................................................................................................22
15
APPENDIX 1: SCHEMATIC DIAGRAMS.........................................................................................................................23
15.1
DX-1
D
B
LOCK
D
IAGRAM
.......................................................................................................................................................23
15.2
C
IRCUIT
D
IAGRAM
–
HIGH
VOLTAGE
POWER
SUPPLY.................................................................................................24
15.3
C
ONTROL
B
OARD AND
A
DJUSTMENT
P
OINTS
........................................................................................................................25
15.4
C
IRCUIT
D
IAGRAM
–
AC
INPUT
AND
WIRING
DIAGRAM
–
S
TANDARD
........................................................................26
15.5
C
IRCUIT
D
IAGRAM
–
AC
INPUT
AND
WIRING
DIAGRAM
–
U.S.
V
ERSION
...................................................................27
15.6
C
IRCUIT
D
IAGRAM
–
SOFT
START
(200
TO
240
V
OPERATION)....................................................................................28
15.7
C
IRCUIT
D
IAGRAM
–
QSK......................................................................................................................................................29
15.8
C
IRCUIT
D
IAGRAM
–
RF
MODULE.......................................................................................................................................30
15.9
C
IRCUIT
D
IAGRAM
–
CONTROL
BOARD............................................................................................................................31
15.10
CONTROL
BOARD
–
C
OMPONENT
L
EGEND
(S
ILKSCREEN
TOP)...................................................................................32
C
ONTROL
B
OARD
–
S
OLDER
S
IDE
T
RACK WORK
...............................................................................................................................33
16
APPENDIX 2: WAVEFORMS ..............................................................................................................................................34
16.1
QSK
(O
PTIONAL MODULE
)
S
WITCHING
.................................................................................................................................34
16.2
L
INEARITY
..............................................................................................................................................................................34
17
APPENDIX 3: ADJUSTMENTS ...........................................................................................................................................35
17.1
CONTROL
BOARD..............................................................................................................................................................35
17.1.1
PRE-BIAS ADJUSTMENT (Adjustment: POT7, marked PRE_BIAS) .........................................................................35
17.1.2
BIAS ADJUSTMENT (Adjustment: POT3, marked BIAS) ...........................................................................................35
17.1.3
SWR Protection adjustment...........................................................................................................................................36
17.1.4
EBS ADJUSTMENT (Adjustment: POT4, marked EBS). .............................................................................................36
17.1.5
SCREEN VOLTAGE ADJUSTMENT (Adjustment: POT2, marked SCREEN)............................................................36
17.1.6
SCREEN CURRENT LIMIT ADJUSTMENT (Adjustment: POT1, IG2LIMIT)..........................................................37
17.1.7
IPTRIP ADJUSTMENT (Adjustment: POT6, marking: IP TRIP)................................................................................37
17.2
DISPLAY
BOARD
ADJUSTMENTS ..................................................................................................................................39
17.2.1
PLATE CURRENT (Adjustment: VR4, Marked: AMP) ................................................................................................39
17.2.2
PLATE VOLTATE (Adjustment: VR2, marked: VOLT)................................................................................................39
17.2.3
REFLECTED POWER (Adjustment: VR3, marked: RF R) ..........................................................................................39
17.2.4
FORWARD POWER (Adjustment: VR1, marked: RF F) .............................................................................................39
17.2.5
SCREEN CURRENT (Adjustment: VR6, marked IG2+, VR5, marked IG2-) ..............................................................39
17.3
RF
SENSOR
ADJUSTMENT ...............................................................................................................................................40