NADY 151 VR
SPECIFICATIONS
Overall System Performance
TABLE OF CONTENTS
Frequency Response ....................................................................................25 - 20,000 Hz ± 3 dB
Dynamic Range..........................................................120 dB (max SPL to A-weighted noise level)
Harmonic Distortion ..............................................................................................................< 0.3%
RF Carrier Frequency....................................One of four standard channels in the VHF high band
Frequency Stability ..................................................................................±.005%, crystal controlled
Modulation ..................................................................................................................FM, ± 15 KHz
Operating Range ......................................................up to 250 feet (depending on site conditions)
Using this Manual..................................................................3
151 VR Receiver ..................................................................4
WLT Lavalier Bodypack Transmitter ......................................6
WHT Handheld Microphone Transmitter ..............................8
Specifications ......................................................................10
Service ................................................................................10
151 VR Receiver
Controls ......................................................Headphone volume controls with unit OFF/ON switch,
Mute adjust, Audio output level adjust
Audio output ....................................................................................................600 ohm unbalanced
Connectors ..............................Audio output; 3.5 mm mini jack; Headset output; 3.5 mm mini jack
LED Indicators .............."TX" on; “LOW BATT”: unit "ON" (single flash), Low Battery Alert (steady)
Mute ............................................................................Externally adjustable; 1 µV preset minimum
Unwanted Signal Rejection ....................................................................60 dB image and spurious
Power Requirements ..............................................................................Single 9V alkaline, internal
Antenna ................................................................................................................Attached Softwire
WLT Lavalier Bodypack Transmitter
Audio Input ..............................3.5 mm mono locking jack for connecting to omni or unidirectional
Thank you for purchasing a Nady 151 VR wireless camcorder microphone
system—and congratulations on your choice. The 151 VR operates on long-
range interference-free VHF high band frequencies. It also utilizes a patented
companding noise reduction system for excellent dynamic range (120 dB) and
hiss-free performance. The 151 VR will make a tremendous difference in your
videos, adding professional quality audio to ever y production.
lavalier mic or unidirectional head worn mic, with phantom power.
Controls......................................................................OFF/STANDBY/ON switch, input level adjust
LED Indicators..................................................Unit "ON" (single flash), Low Battery Alert (steady)
RF Power Out..........................................................................50 mW (maximum allowed by FCC)
Harmonic and Spurious Emissions ....................................................................................> -40 dB
Battery ............................................................................................................................9V alkaline
Battery Life ................................................................................................................Up to 15 hours
Using this Manual
WHT Handheld Microphone Transmitter
Please read these instructions completely before operating your unit. This
booklet gives instructions for the operation of the Nady 151 VR wireless
system which consists of a wireless receiver, an audio cord to connect the
receiver to your camcorder, and a wireless microphone transmitter—either the
WLT lavalier or Nady WHT handheld.
Audio Input................................................................Nady DM-10D neodymium dynamic cartridge
Controls ..................................................................................................OFF/STANDBY/ON switch
LED Indicators..................................................Unit "ON" (single flash), Low Battery Alert (steady)
RF Power Out..........................................................................50 mW (maximum allowed by FCC)
Harmonic and Spurious Emissions ....................................................................................< -40 dB
Battery ............................................................................................................................9V alkaline
Service for your Nady Wi reless System
(U.S.) Should your wireless system require service, please contact the Nady Service Department
via telephone at (510) 652-2411 or e-mail to service@nady.com for a Return Authorization (R/A)
Number and a service quote (if out of warranty). Make sure the R/A Number is clearly marked on
the outside of the package and enclose a cashier's check or money order (if not prepaid with a
credit card). Ship the unit prepaid to: Nady Systems, Inc., Service Department, 6701 Shellmound
Street, Emeryville, CA 94608. Include a brief description of the problem you are experiencing.
The warranty card enclosed with this system contains additional valuable warranty and
s e rvice information. Keep it in a safe place for possible future reference. Do not attempt to
s e rvice this unit yourself as it will void the warranty.
(International) For service, please contact the Nady distributor in your country through the dealer
from whom you purchased this product.
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NADY 151 VR RECEIVER
• Rugged receiver can be camera mounted or worn on the body (with
removable belt clip)
• Easy hookup to camcorder with supplied connecting cable
• Powered by a 9V Alkaline battery in a convenient “pop-open” battery
compartment
• LED lights indicate low battery and receiver signal
• Attached softwire antenna extends from the top of the receiver
(22)
• Convenient operation with Output Level and Mute Adjusts, separate
3.5mm Audio Output and Monitor Headphone mini jacks and Headphone
Volume thumbwheel control with integrated unit OFF/ON switch
Battery Indicator LED
Operating Instructions
Powering the Receiver
Slide the receiver’s battery cover open and place a fresh 9V battery in the
BATTERY COMPARTMENT (1), observing the correct polarity. Although a
fresh alkaline battery can last up to 8-10 hours in use in the receiver, in order
to ensure optimum performance it is recommended that the receiver battery
be replaced after 5 hours of use. Turn the receiver on by rotating the
ON/OFF/VOLUME WHEEL (8) clockwise. The LOW BATT LED (9) will flash
briefly, indicating adequate battery strength. If the LOW BATT LED (9) lights
during use, replace battery.
(21)
OFF/STANDBY/ON Switch
Antenna
When the system is in use, the 151 VR receiver's ANTENNA (2) should be
fully extended to obtain maximum range.
Mute Adjustment
In normal operation, the MUTE CONTROL (3) should be set fully counter-
clockwise to the factory preset RF level of 1 µV. However, in areas of high
RF activity, the mute may need to be adjusted. If, with transmitter off, the
receiver’s TX LED (4) flickers or stays on, the MUTE CONTROL (3) should
be turned clockwise until the TX LED (4) extinguishes.
(19)
Battery Holder
When the mute is properly adjusted, the TX LED will light only when the
system transmitter is turned on.
a quieter mute function, but reduce your operating range.
(20)
9V Alkaline Battery
Note: Turning the mute control too far clockwise will yield
Connecting Audio Output
Plug one end of the audio cable provided into the RECEIVER OUTPUT
JACK (5). The other end should be plugged into your camcorder.
9
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Connecting Headphone to Monitor
WHT HANDHELD MICROPHONE TRANSMITTER
You can monitor the received signal through headphones to set the
transmitter’s level trim properly. Any “Walkman” type headset with a mini plug
or mini plug adaptor can be used, although the signal may be heard in only
one ear unless a stereo-to-mono adapter jack is used.
• Features the Nady DM-10D unidirectional neodymium dynamic cartridge
for optimum true sound, maximum feedback rejection and minimal
handling noise
• OFF/STANDBY/ON switch allows convenient audio muting with the
transmitter "ON"
Monitoring through Receiver
Plug headphones into HEADPHONE JACK (6) on the receiver. The
ON/OFF/VOLUME WHEEL (8) controls volume to the headset. Set the
volume to a comfortable level by rotating the VOLUME WHEEL (8). You will
be able to hear the received signal to the receiver when the system is
operational.This is the monitoring method necessary when adjusting the WLT
transmitter’s microphone input level per page 6.
• Low battery LED indicator flashes once for unit "ON"; lights steady for low
battery alert
Operating Instructions
1. U n s cwr ethe BATTERY COMPARTMENT COVER (18) and remove,
exposing the BATTERY HOLDER (19). Inser t a fresh 9V ALKALINE
BATTERY (20), observing the correct polarity as marked, and screw the
cover back on to the microphone. Make sure the cover is screwed on
completely. A fresh alkaline battery can last up to 15 hours in use, but in
order to ensure optimum performance, it is recommended that you replace
the battery after every 10 hours of use.
Monitoring through Camcorder
Many camcorders allow the user to monitor by providing a headphone jack. If
you plug your headphones into the camcorder, you may need to make a
simple adjustment on the 151 VR receiver. If the sound you hear is
uncomfor tably loud or sounds distorted, turn the OUTPUT LEVEL
CONTROL (7) counter-clockwise until good audio quality is obtained. If
volume is too low, turn
the OUTPUT LEVEL
CONTROL (7) clock-
wise until you obtain
comfortable volume.
(2)
(6)
(5)
(9)
2. Turn on the WHT by sliding the OFF/STANDBY/ON SWITCH (21) to the
STANDBY position (transmitter on, audio muted) or the ON position
(transmitter and audio both on). The BATTERY INDICATOR LED (22) will
g i ev a single quick flash, indicating usable battery strength. In the case of a
dead or low battery, the LED will either not go on at all or will stay on
continuously, indicating that the battery should be replaced with a fresh one.
To preserve battery life, turn the transmitter off when not in use.
(8)
Transmitter Set-Up
(4)
After completing the
above steps, proceed
to instructions fo r
operating the Nady
transmitter included
with your system.
(7)
3. The microphone is now ready to use. The TX LED (4) on the 151 VR
receiver should now be lit, indicating a received signal from the transmitter.
When ready to speak, slide the transmitter switch to the ON position.
Receiver Volume Control Adjust
Turn volume control on the 151 VR receiver clockwise to near full gain.
Wearing a monitor headset plugged into the receiver's headset jack, speak
into the lavalier microphone. Adjust the receiver's volume to a comfortable
listening level.
(3)
Note: Microphone elements can easily be destroyed by the buildup of salts and minerals from
perspiration and saliva. It is good practice to put a windscreen on the mic element at all times to
protect it.
(1)
(on back)
8
5
(Note: Microphone elements can easily be destroyed by the buildup of salts and minerals from
perspiration and saliva. It is good practice to put a windscreen on the mic element at all times to
protect it.)
WLT LAVALIER BODYPACK TRANSMITTER
• OFF/STANDBY/ON switch allows convenient audio muting with the
transmitter “ON”
• Low battery LED indicator flashes once for unit “ON”; lights steady for low
battery alert
(17)
• Locking 3.5mm mini-jack provides secure connection for removable
microphone or instrument cable
Audio Input
Level Control
• Easily accessible input level adjust control for optimum sound
(12)
(16)
3.5 mm
Operating Instructions
Locking Jack
Battery Indicator LED
1. Snap open the BATTERY COMPARTMENT (10) and insert a fresh 9V
BATTERY (11), observing the correct polarity. Close the compartment.
(14)
(15)
Headworn
Microphone
OFF/STANDBY/
ON Switch
2. The WLT is provided with a 3.5 mm LOCKING JACK (12) for connecting
the microphone. Plug in either the LAVALIER/LAPEL (13) or the
HEADWORN MICROPHONE (14), as supplied. To secure the connection,
turn the metal slip ring on the plug clockwise to thread it on to the jack. To
unplug, reverse the process. Slip the transmitter into a pocket or clip on to
your clothes. To use the lavalier mic, attach it at chest level. Do not place
too close to the mouth – a distance of about six inches usually works best.
To use the headworn mic, place it on the head and adjust the mic boom so
that the mic is about one inch to the side of the front of the mouth.
(Note: The lavalier or headworn mic wire is also the transmit antenna, and rolling up or
shortening the wire may reduce the effective operating range. Extend the wire fully during use,
and keep it as straight as possible.)
(13)
Lavalier/Lapel
3. Turn on the WLT by sliding the OFF/STANDBY/ON SWITCH (15) to the
STANDBY position (transmitter on, audio muted) or the ON position
(transmitter and audio both on). The BATTERY INDICATOR LED (16) will
give a single quick flash, indicating usable battery strength. In the case of a
dead or low battery, the LED either will not go on at all or will stay on
continuously, indicating that the battery should be replaced with a fresh
one.
(10)
Battery
Compartment
4. The microphone is now ready to use. The TX LED INDICATOR (4) on
the 151 VR receiver should now be lit, indicating a received signal from the
transmitter. When ready to speak, slide the transmitter switch to the ON
position and adjust the volume of the receiver as per instructions on page
5. Re-position the microphone farther from the source or adjust the AUDIO
INPUT LEVEL CONTROL (17) if the monitored volume is to loud or
distorted afer adjusting the receiver as per instructions on page 5.
(11)
Opening Battery Compartment
9V Alkaline Battery
7
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