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VMU tuner RD-AX8308-01 VMU Tuner or its equivalent.
Click (verb) Put the pointer on an item on the PC's screen with the mouse
or equivalent pointing device, then quickly push and release
the left mouse button.
Double-click
(verb)
Put the pointer on an item on the PC's screen with the mouse
or equivalent pointing device, then quickly push and release
the left mouse button two times.
Type (verb) Put alphanumeric characters into the PC from its keyboard.
The typed characters are shown in italics. You must use the
Shift key to type CAPITALS and some special characters such as
"*".
G. Figure Numbers
In this section, the figure number starts from "111" as continued from
the TESTING AND FAULT ISOLATION - PART 1 section.
T&FI-2
Page 103
Jul 20/2005
Panasonic Avionics Corporation
COMPONENT MAINTENANCE MANUAL
PART NUMBER RD-AA5002 SERIES
23-32-47
2. Equipment and Materials Necessary for Testing and Fault Isolation
NOTE: You can use alternatives for the items given in the list. The source
is as follows:
· Panasonic for Panasonic Avionics Corporation
· C/A for available from commercial sources
· Trademarks or company names for other sources.
ITEM (SOURCE) DESCRIPTION/MINIMUM REQUIREMENTS
VMU Tester,
RD-AX8308 (Panasonic)
It gives the electrical connections between the VMU and
the test equipment or other units. AC power of 115 V,
400 Hz is supplied to the VMU through the VMU tester.
Refer to Figure 101 for the front and rear views of the
VMU tester.
Test Harness,
RD-AM9341-02
(Panasonic)
It connects the VMU to the VMU tester. Refer to the OMM
TZZX830800 for full data on this harness.
Serial Port Adapter
(accessory of test
harness, RD-AM9341-02)
25P to 9P serial port adapter. This adapter is necessary
only if the PC's COM1 or COM2 port connector is a 9-pin
type (DB-9M).
Personal Computer
(C/A)
IBM PC/AT or compatible system with:
· 1.44-MB 3.5-inch floppy disk drive
· COM1 or COM2 serial port available for testing
· Windows 95 or 98 as operating system
· VGA color monitor
· Keyboard.
VMU Tester Software
(Ver. 1.00),
MD2HD256199A
(Panasonic)
A 1.44-MB 3.5-inch floppy disk that contains one selfextracting
file "VMUTESTER.EXE". The disk is supplied as
an accessory of the tester.
NTSC or PAL Video
Pattern Generator
(C/A)
This unit is necessary as a video source for the
modulation depth adjustment with the requirements as
follows:
· 50-W or 75-W output impedance
· 100% white raster (or other pattern that contains 100%
white part)
· Color-bar pattern
· Variable output with a center value of 1 Vp-p into
50-W or 75-W load.
T&FI-2
Page 104
Jul 20/2005
Panasonic Avionics Corporation
COMPONENT MAINTENANCE MANUAL
PART NUMBER RD-AA5002 SERIES
23-32-47
(Cont’d)
ITEM (SOURCE) DESCRIPTION/MINIMUM REQUIREMENTS
Impedance Converter,
RD-AM8285 (Panasonic)
This unit is necessary if the video pattern generator has
an output impedance of 75 W. The impedance converter
operates on 115 V, 400 Hz. Refer to Figure 102A for the
front and rear views of the impedance converter.
Impedance Selector,
RD-AM8285-01
(Panasonic)
This unit gives an output impedance selection of 50 W,
75 W or 100 W for a video signal source with an output
impedance of 50 W. Refer to Figure 102B for the front
and rear views of the impedance selector.
Spectrum Analyzer
(C/A)
It has a 50-W unbalanced input and is good for
measurement of VHF carrier signals from 100 to 110 dBmV
(precision of ±0.3 dB or better) in level and from 130
to 330 MHz in frequency.
BNC 50-W Terminator
(C/A)
Three sets are necessary to give termination for three RF
outputs of the VMU. Each must be 0.5 W or more in
rating.
20-dB RF Attenuator
(C/A)
Type good for VHF applications, 50 W input impedance,
0.5 W or greater. It must give an attenuation of
approximately 20 dB for the VMU tuner.
VMU Tuner,
RD-AX8308-01
(Panasonic)
This unit tunes to one of the RF video carriers from the
VMU and makes demodulation of the RF video (NTSC or PAL).
It gives a calibrated video output (1 Vp-p for 87.5%
modulation) to measure and adjust the modulation depth of
the RF video signal. Refer to Figure 102 for more data
on the VMU tuner.
NOTE: As an alternative for this unit, you can use your
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COMPONENT MAINTENANCE MANUAL Video Modulator Unit (VMU)(62)
