User's Manual Part 1
AT7400 Owner Manual Rev. 2.0 – October 2006-10-23 Section 3 - 3/39
2.GAV4452 – 30W UHF/ATSC Exciter – Block Diagram
+3 2 V
RESTARTED
RF OUT
30W UHF ATSC EXCITER
MO DULE 4455
+12V+5V
S UBORDINATE
CONTROL UNIT
(SCU)
CIM 3 297
5 32
RS 232
32
RS48 5
DAT AI N – DATAOUT
DATAO UT– DATAIN
MODULATORCLOCK
MODULATORENABLE
MODULATORREAD
L OCK CLO CKAL ARM
ALC (POWER CONTRO L)
VCO1 C ONTROL
VCO2 CONTROL
VCO3 C ONTROL
VCO4 CONTROL
DIV0
DIV1
DIV2
DIV3
DIV4
DIV5
NO IF ALARM
L OCK DETEC TOR AL ARM
UHF
UPCONVERTER
MO DULE 4453
IO RESET
SEND I O
SEND CL OCK
IO UP DAT EC LOCK
MAST ER RESET
SERIAL DATA OUT
DIRE CT DIGIT AL
S YNTHESIZER
(D DS )
MO D ULE 4 466
8V SB
M ODULATOR
AN D M A ST E R
CLOCK
MO DULE 4454
I I’ Q Q’
172MHz
14M Hz
+15V
DIRECT
PO WER SUP PL Y
MO DU LE 4 456
10AFUSE
+32V REST.
+32V
+32V
+15V DIR.
+15V
SUPPLY
FAN 1
63
52
41
ON/OFF
SWITCH
12
PHA SE 2
O R NE UTR AL
3
PHASE1
4
FA N 2
PHASE 1
PHASE2
ORNEUTRAL
+5V
+2.5V
+ 32 V O UTPUTCURR ENTREADING
32V O UTPUT VOLTAGE READING
POWER SUPP L Y RECONNECT I O N
POW ERSUP PL YS HUTDO WN
EXCITER TEMPERATURE ALARM
+15V +5 V
RS232RX
RS2 3 2 TX
RS2 3 2 GND
RS485B
RS485A
SM PT E I N
10MHz RE F IN
20 8V
AC
20 8V MO NOPHASI C AND 36 0 V TRIPHASIC EQ UIPAMENT S:
•
PHASE 1: 20 8 V
AC
•NE UTRA L
20 8V BIPHASIC AND 2 08 VT RI PHASI C EQUIPAM ENTS
:
•
PHASE 1 / PHASE 2:120V
AC
-15V
UHF ATSC
CHANN ELTV
+15V+1.2V -15 V+3.3V +5V
+32V+15V+5 V -15 V+3 . 3V + 12 V
+15V
MO DULE 4470
VO LTAGE
REGULATORS
+5V +2 . 5V
+1 . 2V+3.3V+8V+12V
+3 2 V
RESTARTED
RF OUT
30W UHF ATSC EXCITER
MO DULE 4455
+12V+5V
S UBORDINATE
CONTROL UNIT
(SCU)
CIM 3 297
5 32
RS 232
32
RS48 5
DAT AI N – DATAOUT
DATAO UT– DATAIN
MODULATORCLOCK
MODULATORENABLE
MODULATORREAD
L OCK CLO CKAL ARM
ALC (POWER CONTRO L)
VCO1 C ONTROL
VCO2 CONTROL
VCO3 C ONTROL
VCO4 CONTROL
DIV0
DIV1
DIV2
DIV3
DIV4
DIV5
NO IF ALARM
L OCK DETEC TOR AL ARM
UHF
UPCONVERTER
MO DULE 4453
IO RESET
SEND I O
SEND CL OCK
IO UP DAT EC LOCK
MAST ER RESET
SERIAL DATA OUT
DIRE CT DIGIT AL
S YNTHESIZER
(D DS )
MO D ULE 4 466
8V SB
M ODULATOR
AN D M A ST E R
CLOCK
MO DULE 4454
8V SB
M ODULATOR
AN D M A ST E R
CLOCK
MO DULE 4454
I I’ Q Q’
172MHz
14M Hz
+15V
DIRECT
PO WER SUP PL Y
MO DU LE 4 456
10AFUSE
+32V REST.
+32V
+32V
+15V DIR.
+15V
SUPPLY
FAN 1
63
52
41
ON/OFF
SWITCH
12
PHA SE 2
O R NE UTR AL
3
PHASE1
4
FA N 2
PHASE 1
PHASE2
ORNEUTRAL
+5V
+2.5V
+ 32 V O UTPUTCURR ENTREADING
32V O UTPUT VOLTAGE READING
POWER SUPP L Y RECONNECT I O N
POW ERSUP PL YS HUTDO WN
EXCITER TEMPERATURE ALARM
+15V +5 V
RS232RX
RS2 3 2 TX
RS2 3 2 GND
RS485B
RS485A
SM PT E I N
10MHz RE F IN
20 8V
AC
20 8V MO NOPHASI C AND 36 0 V TRIPHASIC EQ UIPAMENT S:
•
PHASE 1: 20 8 V
AC
•NE UTRA L
20 8V BIPHASIC AND 2 08 VT RI PHASI C EQUIPAM ENTS
:
•
PHASE 1 / PHASE 2:120V
AC
-15V
UHF ATSC
CHANN ELTV
+15V+1.2V -15 V+3.3V +5V
+32V+15V+5 V -15 V+3 . 3V + 12 V + 32 V+15V+5 V -15 V+3 . 3V + 12 V
+15V
MO DULE 4470
VO LTAGE
REGULATORS
+5V +2 . 5V
+1 . 2V+3.3V+8V+12V