User's Manual Part 1

AT7400 Owner Manual Rev. 2.0 – October 2006-10-23 Section 3 - 4/39
3.GAV4452 - Module 4454 – 8VSB Modulators and Master Clock
3.1. General Functional Description
The module 4454 can be break down in 2 printed circuit boards. These boards are physically located as the
figure below:
(YL) MODULATOR CLOCK ? PIN3–CON-3–CIM3297–SCU
1
2
3
4
5
6
(BK) DATA IN – DATA OUT? PIN2–CON-3–CIM3297–SCU
(BL) DATA OUT – D ATA IN ? PIN1–CON-6–CIM3297–SCU
(GR) MODULATOR ENABLE ? PIN4–CON-3–CIM3297–SCU
(OR) MODULATOR READ ? PIN5–CON-3–CIM3297–SCU
(OR) +3.3 V ? CO N-8 – CIM34 58 – MOD.4470 – VOLTAGE REGULAT ORS
5
6
7
8
9
(WH) GROU ND ? CON-5 – CI M34 58 – MOD.44 7 0 – VOL TAGE REGUL ATORS
(OR) +3.3 V ? CO N-8 – CIM34 58 – MOD.4470 – VOLTAGE REGULAT ORS
(OR) +3.3 V ? CON-8 – CIM3458 – MOD.4470 – VOLTAGE REGULATORS
(WH) GROU ND ? CON-5 – CI M34 58 – MOD.44 7 0 – VOL TAGE REGUL ATORS
(WH) GROU ND ? CON-5 – CI M34 58 – MOD.44 7 0 – VOL TAGE REGUL ATORS
1
2
3
4
(YL) +1.2V ? CON-9 – CIM3458 – MOD.4470 – VOLTAGEREGULATORS
(YL) +1.2V ? CON-9 – CIM3458 – MOD.4470 – VOLTAGEREGULATORS
(YL) +1.2V ? CON-9 – CIM3458 – MOD.4470 – VOLTAGEREGULATORS
CON-10
CON-11
2
1
6
5
4
3
(BK) -1 5V ? C ON-3 – CIM3461 – MOD. 4456 – POWER SUPPL Y
(WH) GROUND ? CON-5–CIM3458–MOD.4470–VOLTAGEREGULATORS
(BR) +5V ? CON-2–CIM3459–MOD.4456–POWERSUPPLY
(BL) +15V ? CON-2–CIM3461–MOD.4456–POWERSUPPLY
(OR) +3. 3V ? CON-8–CIM3458–MOD.4470–VOLTAGEREGULATORS
(GY) LOCK C LOCK ALA RM ? PIN4–CON-6–CIM3297–SCU
CON-7
CON-7
CON-6
CON-5
172MHz MASTER CLOCK
CON-5
CON-3
(50 O BELDEN CABLE) I
+
SIGN AL ? CON-1 – C IM3442 – MOD. 4453 – UH F UPCONVERTER
(50 O BELDEN CABLE) I
–
SIGN AL ? CON-2 – C IM3442 – MOD. 4453 – UH F UPCONVERTER
(50 O BE LDEN CABL E) Q
+
SIGNAL? CON-4–CIM3442–MOD.4453–UHFUPCONVERTER
(50 O BELDEN CABLE) Q– SIGNAL ? CON-5 – CIM 3442 – MOD.4453 – UHF UPCONVERTE R
(50 O BELDE N CABLE) 1 72MH z MASTER CLOCK ? CON-1 – CIM3456 – MOD.4466 – DDS
172MHz MASTER CLOCK
MA STER CLOCK
CIM3445
8VSB MODULATOR
CIM 3444
SMPTE I N
10 MHz EXT ER N AL R EF ER EN CE I N
MASTER CLOCK
CIM 3445
8VSB MODULATOR
CIM3444
CON-4
CON-3
CON-9
CON-4
(WH) GROUND ? CON-5–CIM3458–MOD.4470–VOLTAGEREGULATORS
1
2
3
4
(WH) GROU ND ? CON-5 – CI M34 58 – MOD.44 7 0 – VOL TAGE REGUL ATORS
(WH) GROU ND ? CON-5 – CI M34 58 – MOD.44 7 0 – VOL TAGE REGUL ATORS
(OR) +3.3 V ? CO N-8 – CIM34 58 – MOD.4470 – VOLTAGE REGULAT ORS
(OR) +3.3 V ? CO N-8 – CIM34 58 – MOD.4470 – VOLTAGE REGULAT ORS
Fig.3.3: Module 4454 – Left: Front View, Right: Top View.