曝光臺 注意防騙 網曝天貓店富美金盛家居專營店坑蒙拐騙欺詐消費者

GENERAL DESIGN
ITEM DESCRIPTION
External Dimensions Refer to Figure 1.
Mass (Weight) 11.24 pounds (5.1 kg) maximum.
External Connector J1 (ARINC 600 size 1 on the rear side). Refer to
Figure 1A for the pin/contact assignments.
Case Size ARINC 600-4MCU.
MODULATOR CHANNELS
ITEM DESCRIPTION
Number of Modulator
Channels
Twelve (12).
Carrier Frequencies · One of the frequencies between 139.25 MHz and 295.25
MHz in increments of 1 MHz for RD-AA5002-12.
· One of the frequencies between 90.25 MHz and 345.25
MHz in increments of 1 MHz for other part numbers.
Modulation External input of composite video signal (NTSC or PAL)
for each channel, or internal video signal (80% white
raster) for modulator channel 2 and this channel only.
RF Outputs Four power-divided outputs with output impedance of 50
W unbalanced, each a mixture of 12 RF video signals.
RF Output level 102 dBμV into a 50-W load for each channel carrier.
The tolerance is as follows:
· +3 dB or -4 dB for 151.25 thru 283.25 MHz
· +3 dB or -10 dB for 90.25 thru 345.25 MHz.
Signal-to-Noise Ratio 45 dB minimum (unweighted).
Page 4
Feb 20/2002
Matsushita Avionics Systems Corporation
COMPONENT MAINTENANCE MANUAL
PART NUMBER RD-AA5002 SERIES
23-32-47
MODULATION SPECIFICATIONS
ITEM DESCRIPTION
Video Inputs Twelve composite video inputs for modulator channels 1
thru 12 plus one test video input, each 1 Vp-p
balanced (unbalanced input is also permitted).
For modulator channel 1, there is selection of video
channel 1 input or test video input.
Input impedance is as follows:
AA5002-12 and RD-AA5002-22
50 W for modulator channels 1 thru 12.
RD-AA5002-23
50 W for modulator channels 1 thru 11 and
100 W for modulator channel 12.
RD-AA5002-25
50 W for modulator channels 1 thru 6 and
100 W for modulator channels 7 thru 12.
Internal Video Monochrome video signal for 80% white raster from
internal video signal generator. This video signal is
applied to modulator channel 2 during the BITE mode.
Modulation Negative-polarity amplitude modulation of picture
carrier.
Modulation depth of 87.5% ± 6% with 1 Vp-p video
input.
DATA COMMUNICATIONS
ITEM DESCRIPTION
RS-232C Port (J1) For serial data communications between VMU and system
control unit (VSCU, EVSCU, etc.), 1200 bits/s.
ENVIRONMENT
ITEM DESCRIPTION
Operating Temperature -15°C thru +55°C (5°F thru +130°F).
Storage Temperature -55°C thru +85°C (-67°F thru +185°F).
Cooling Convection.
Page 4.01
Feb 20/2002
Matsushita Avionics Systems Corporation
COMPONENT MAINTENANCE MANUAL
PART NUMBER RD-AA5002 SERIES
23-32-47
ELECTRICAL CHARACTERISTICS
ITEM DESCRIPTION
Input Power 115 V AC, 400 Hz, single phase.
Power Dissipation 65 W maximum.
Power Factor 0.75 minimum.
Circuit Protection All active circuits are given protection for their
open and short circuit conditions.
Page 4.02
Feb 20/2002
Matsushita Avionics Systems Corporation
COMPONENT MAINTENANCE MANUAL
PART NUMBER RD-AA5002 SERIES
23-32-47
J1 CONNECTOR TOP PLUG (J1A)
CONTACT FUNCTION
J1A-A1 RS-232C DATA RETURN
J1A-B1 RS-232C DATA OUT
J1A-C1 RS-232C DATA IN
J1A-D1 SHIELD *1
J1A-A2 SPARE
J1A-B2 SPARE
J1A-C2 SPARE
J1A-D2 SPARE
J1A-A3 VIDEO CH12 HI
J1A-B3 VIDEO CH12 LO
J1A-C3 VIDEO CH12 SHIELD
J1A-D3 SPARE
J1A-A4 VIDEO CH11 HI
J1A-B4 VIDEO CH11 LO
J1A-C4 VIDEO CH11 SHIELD
J1A-D4 SPARE
J1A-A5 VIDEO CH10 HI
J1A-B5 VIDEO CH10 LO
J1A-C5 VIDEO CH10 SHIELD
J1A-D5 SPARE
J1A-A6 VIDEO CH9 HI
J1A-B6 VIDEO CH9 LO
J1A-C6 VIDEO CH9 SHIELD
J1A-D6 SPARE
J1A-A7 VIDEO CH8 HI
J1A-B7 VIDEO CH8 LO
J1A-C7 VIDEO CH8 SHIELD
J1A-D7 SPARE
*1- There is no internal connection to this contact.
PIN/CONTACT ASSIGNMENTS OF EXTERNAL CONNECTOR J1
Figure 1A (Sheet 1)
Page 4.03
Feb 20/2002
Matsushita Avionics Systems Corporation
COMPONENT MAINTENANCE MANUAL
PART NUMBER RD-AA5002 SERIES
23-32-47
J1 CONNECTOR TOP PLUG (J1A) (CONT'D)
CONTACT FUNCTION
J1A-A8 VIDEO CH7 HI
J1A-B8 VIDEO CH7 LO
J1A-C8 VIDEO CH7 SHIELD
J1A-D8 SPARE
J1A-A9 VIDEO CH6 HI
J1A-B9 VIDEO CH6 LO
J1A-C9 VIDEO CH6 SHIELD
J1A-D9 SPARE
J1A-A10 VIDEO CH5 HI
J1A-B10 VIDEO CH5 LO
J1A-C10 VIDEO CH5 SHIELD
J1A-D10 SPARE
J1A-A11 VIDEO CH4 HI
J1A-B11 VIDEO CH4 LO
J1A-C11 VIDEO CH4 SHIELD
　
中國航空網 m.k6050.com
航空翻譯 www.aviation.cn
本文鏈接地址：COMPONENT MAINTENANCE MANUAL Video Modulator Unit (VMU)(16)