Linear AT7400, Руководство пользователя

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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 ? PIN 3 – CON-3 – CIM3297 – SCU
1
2
3
4
5
6
(BK) DATA IN – DATA OUT ? PIN 2 – CON-3 – CIM3297 – SCU
(BL) DATA OUT – DATA IN ? PIN 1 – CON-6 – CIM3297 – SCU
(GR) MODULATOR ENABLE ? PIN 4 – CON-3 – CIM3297 – SCU
(OR) MODULATOR READ ? PIN 5 – CON-3 – CIM3297 – SCU
(OR) +3.3V ? CON-8 – CIM3458 – MOD.4470 – VOLTAGE REGULATORS
5
6
7
8
9
(WH) GROUND ? CON-5 – CIM3458 – MOD.4470 – VOLTAGE REGULATORS
(OR) +3.3V ? CON-8 – CIM3458 – MOD.4470 – VOLTAGE REGULATORS
(OR) +3.3V ? CON-8 – CIM3458 – MOD.4470 – VOLTAGE REGULATORS
(WH) GROUND ? CON-5 – CIM3458 – MOD.4470 – VOLTAGE REGULATORS
(WH) GROUND ? CON-5 – CIM3458 – MOD.4470 – VOLTAGE REGULATORS
1
2
3
4
(YL) +1.2V ? CON-9 – CIM3458 – MOD.4470 – VOLTAGE REGULATORS
(YL) +1.2V ? CON-9 – CIM3458 – MOD.4470 – VOLTAGE REGULATORS
(YL) +1.2V ? CON-9 – CIM3458 – MOD.4470 – VOLTAGE REGULATORS
CON-10
CON-11
2
1
6
5
4
3
(BK) -15V ? CON-3 – CIM3461 – MOD. 4456 – POWER SUPPLY
(WH) GROUND ? CON-5 – CIM3458 – MOD.4470 – VOLTAGE REGULATORS
(BR) +5V ? CON-2 – CIM3459 – MOD. 4456 – POWER SUPPLY
(BL) +15V ? CON-2 – CIM3461 – MOD. 4456 – POWER SUPPLY
(OR) +3.3V ? CON-8 – CIM3458 – MOD.4470 – VOLTAGE REGULATORS
(GY) LOCK CLOCK ALARM ? PIN 4 – CON-6 – CIM3297 – SCU
CON-7
CON-7
CON-6
CON-5
172MHz MASTER CLOCK
CON-5
CON-3
(50O BELDEN CABLE) I
+
SIGNAL ? CON-1 – CIM3442 – MOD.4453 – UHF UPCONVERTER
(50O BELDEN CABLE) I – SIGNAL ? CON-2 – CIM3442 – MOD.4453 – UHF UPCONVERTER
(50 O BELDEN CABLE) Q
+
SIGNAL ? CON-4 – CIM3442 – MOD.4453 – UHF UPCONVERTER
(50O BELDEN CABLE) Q
–
SIGNAL ? CON-5 – CIM3442 – MOD.4453 – UHF UPCONVERTER
(50O BELDEN CABLE) 172MHz MASTER CLOCK ? CON-1 – CIM3456 – MOD.4466 – DDS
172MHz MASTER CLOCK
MASTER CLOCK
CIM3445
8VSB MODULATOR
CIM3444
SMPTE IN
10MHz EXTERNAL REFERENCE IN
MASTER CLOCK
CIM3445
8VSB MODULATOR
CIM3444
CON-4
CON-3
CON-9 CON-4
(WH) GROUND ? CON-5 – CIM3458 – MOD. 4470 – VOLTAGE REGULATORS
1
2
3
4
(WH) GROUND ? CON-5 – CIM3458 – MOD.4470 – VOLTAGE REGULATORS
(WH) GROUND ? CON-5 – CIM3458 – MOD.4470 – VOLTAGE REGULATORS
(OR) +3.3V ? CON-8 – CIM3458 – MOD.4470 – VOLTAGE REGULATORS
(OR) +3.3V ? CON-8 – CIM3458 – MOD.4470 – VOLTAGE REGULATORS
Fig.3.3: Module 4454 – Left: Front View, Right: Top View.