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14
Setting Up and Using Your
VHF TD Series/ VHF Series System
11. Conversely, if you hear a weak, noisy signal at the desired volume level (and with the
Volume control of the receiver turned fully clockwise), again make sure that the VR3TD or
VR3 rear panel Audio Output Level switch is set correctly and that the gain structure of
your audio system is correctly set. If it is and the signal coming from the VR3TD or VR3 is
still weak and/or noisy, do the following:
• If you are using a VH3 transmitter or an VT3L transmitter with connected lavalier
microphone or headset, its Gain control has been factory preset to provide optimum
level for the particular microphone model being used and so no adjustment should be
necessary. Any weakness of signal should therefore simply be a matter of the
microphone being too far from the mouth; try moving it closer. If this does not solve
the problem, use the supplied plastic screwdriver to turn the Gain control (trimpot) on
the VH3 or VT3L slowly clockwise until the signal reaches an acceptable level.
• If you are using a VT3 transmitter with an instrument such as electric guitar or bass,
raise the output level of the instrument until a good signal is achieved. Alternatively,
you can use the supplied plastic screwdriver to turn the Gain control (trimpot) on the
VT3 slowly clockwise until the signal reaches an acceptable level.
12. Temporarily turn down the level of your mixer/amplifier system and turn off the power
to your transmitter, leaving the VR3TD or VR3 on. Then restore the previously set level of
your mixer/amplifier. With the transmitter off, the receiver output should be totally silent—if
it is, skip ahead to the next step. If it isn’t (that is, if you hear some noise), you may need
to adjust the receiver’s front panel Squelch control. When the Squelch control is at its
minimum setting, the VHF TD Series / VHF Series system always provides maximum
range without dropout; however, depending upon the particular environment your system is
used in, you may need to reduce that range somewhat in order to eliminate band noise or
interference when the transmitter is turned off. To do so, use the provided screwdriver to
rotate the Squelch control completely counterclockwise (to the “Min” position), then slowly
turn it clockwise until the noise disappears. If no noise is present at any position, leave it at
its fully counterclockwise “Min” position (so as to have the greatest overall range available).
13. When first setting up the VHF TD Series or VHF Series System in a new environment,
it’s always a good idea to do a walkaround in order to make sure that coverage is provided
for your entire performance area. Accordingly, turn down the level of your audio system
and turn on both the transmitter and receiver. Then, with the transmitter unmuted, restore
the level of your audio system and while speaking, singing, or playing your instrument, walk
through the entire area that will need to be covered. As you do so, the “TX” LED on the
front panel of the VR3TD or VR3 should always remain lit. If you are using a VHF TD
Series system, one of the yellow “A” and “B” LEDs on the VR3TD receiver should always
be lit, though occasionally switching to show you which antenna is receiving the stronger
signal. Always try to minimize the distance between transmitter and receiver as much as
possible so that the strongest possible signal is received from all planned transmission
points. In fixed installations such as A/V or corporate conference rooms or for extended
range applications (where the transmitter and receiver are more than 150 feet apart), it
may be desirable to angle the receiver antenna or antennas differently from their vertical
position or to install the receiver in the same room as the transmitters (and, if necessary,
to extend the wiring to remote audio equipment).
If you have followed all the steps above and are experiencing difficulties, contact your
local distributor or, if purchased in the United States, call Samson Technical Support
(1-800-372-6766) between 9 AM and 5 PM EST.
ENGLISH