As a troubleshooting aid, each Video Remote has an LED (next to its Ham
mer icon) which will light when it has received a trigger signal from the Video
Test Module and is transmitting its 430MHz 50dBmV response message.
Each Video Remote also has a low battery alert LED which will light when
it has received a trigger signal from the Video Test Module but doesn't have
adequate battery power remaining to transmit messages.
8. Video Module Test #7 (BNC SDI Signal Level Measurement)
This test uses the BNC coaxial cable connector of the Video Test Module
and it is used to measure the broadband signal power level in a coaxial cable
installation with any general video signal source, such as an SDI camera. An
example application might be to verify that an SDI camera signal is reach
ing a new video recorder installation endpoint. The Video Test Module will
display (in dBmV units) the broadband signal level of any signal it measures
on the coaxial cable attached to the BNC coaxial cable input. The frequency
response range of the measurement is from approximately 15MHz to 3 GHz.
9. Video Remote Unit
The Video Remote Unit is tested and configured at the factory for optimum
performance. It doesn't have a power switch and the supplied CR2450 3V
coin cell battery will provide power for hours of testing. If the unit indicates a
low battery condition, or doesn't seem to respond even when directly plugged
into one of the Video Test Module's coaxial ports and test #4 or test #6 is
activated, it is recommended to replace the battery. Follow the Instructions in
the section titled "Replacing Video Remote Unit Battery".
The Video Remote is used in combination with the Video Test Module for per
forming HDMI cable test #1, as well as video coaxial cable tests #4 and #6.
It remains in an extremely low-power state except when activated by these
tests and therefore cannot be used as a general signal source for performing
tests #5 and #7.
10. Replacing Video Remote Unit Battery
When it becomes necessary to replace the battery in the Video Remote Unit
follow these steps:
1. If possible, perform the procedure in a static free environment.
2. Replace battery with Panasonic CR2450, Energizer CR2450, or equivalent
Lithium 3V coin cell battery only. Rechargeable Li-Ion battery replacements
are NOT recommended.
3. Using a small Philips (PH1) screwdriver, remove the (4) corner screws
which hold the upper and lower case halves together. (See picture below).
4. Separate the case parts to expose the circuit board assembly with the coin
cell battery holder facing upward.
5. Push the retaining tab to the right to release the coin cell battery. Remove
the battery from the battery holder.
6. Observing proper polarity (flat side with engraved "+" facing upward), insert
the new battery into the coin cell battery holder and press downward until the
retaining tab clicks into place, securing the battery.
7. Position the case parts together in proper alignment, and reinstall the (4)
corner screws.
8. You may check/verify that the battery is fully charged by selecting and
running Video Test #4 with the Video Remote unit plugged directly into the
F-Type coaxial connector on the Video Test Module. If the displayed signal
level is 46db or greater, the battery is fully charged
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11. Troubleshooting
The Video Test Module is powered by the same (4) AA batteries which pro
vide power to the LVPro20 or LVPro30 which it is connected to. While it does
power down various internal components to save energy whenever it can do
so, the battery life expectancy of the LVPro will be shortened with use of the
video test module.
You may find that it becomes necessary to replace batteries slightly more
often with frequent use of the Video Test Module. To maximize LVPro battery
life when you aren't planning to use the Video Test Module, simply unscrew
the retaining thumbscrew, disconnect the RJ11 interface cable and remove
the Video Test Module. Reinstall the snap on adapter cover on the back of
the LVPro case to prevent debris from entering your LVPro20 or LVPro30's
instrument casing.
Assembled in U.S.A. from domestic and foreign parts
UM-VTMMAIN
10/15
99 Washington Street
Melrose, MA 02176
Phone 781-665-1400
Toll Free 1-800-517-8431
Visit us at www.TestEquipmentDepot.com
