Nady Systems U-800 Owner's Manual - page 6
18
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possible as they can reflect away or shield the incoming RF signal.
UÊvÊÌ iÊÀiViÛiÀ½ÃÊÛÕiÊVÌÀÊÃÊÃiÌÊÌÊ } ]ÊÌÊ>ÞÊÛiÀ`ÀÛiÊÌ iÊ«ÕÌÊvÊÌ i
attached audio mixer, causing distortion. Conversely, if the output is set too low, the
overall signal-to-noise ratio of the system may be reduced, causing noticeable hiss.
If such noise occurs, adjust the output level of the receiver so that highest sound
pressure level going into the microphone transmitter causes no input overload in
the mixer, but permits the mixer level control to operate in the normal range (not
too high and not too low). This provides the optimal signal-to-noise for the entire
system.
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UÊivÀiÊ«iÀ>Ì]ÊVwÀÊÌ >ÌÊÌ iÊÀiViÛiÀÊ>`Ê>ÃÃV>Ìi`ÊÌÀ>ÃÌÌiÀÊ>ÀiÊÌÕi`ÊÌ
the same frequency group and channel number.
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also made on the matching transmitter.
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Ê «ÕÀ«Ãi»ÊV>ÀLÊL>ÌÌiÀiðÊ7 iÊL>ÌÌiÀiÃÊ>ÀiÊÜi>]ÊÀi«>ViÊ>ÊÌ iÊL>ÌÌiÀiÃÊ>ÌÊÌ i
same time. Do not mix new and old batteries.
UÊ*ÃÌÊÌ iÊÀiViÛiÀÊÃÊÌ >ÌÊÌÊ >ÃÊÌ iÊi>ÃÌÊ«ÃÃLiÊLÃÌÀÕVÌÃÊLiÌÜiiÊÌÊ>`ÊÌ i
transmitter. Line-of-sight is best!
UÊÕÀ}Ê«iÀ>Ì]ÊÌ iÊÌÀ>ÃÌÌiÀÊ>`ÊÌ iÊÀiViÛiÀÊÃ Õ`ÊLiÊ>ÃÊVÃiÊ>ÃÊ«ÃÃLiÊvÀ
optimum results but never closer than 3 ft. (1 m) as that may overload the receiver’s
input circuitry and cause noises.
UÊvÊÀ>VÊÕÌ}ÊÌ iÊÀiViÛiÀ]Êii«Ê>Ü>ÞÊvÀÊ i>ÌÊÃÕÀViÃÊÃÕV Ê>ÃÊ>«ÃÊLÞ
allowing enough space between them for adequate ventilation.
UÊÀÊÌ iÊLiÃÌÊ«iÀ>Ì]ÊÌ iÊÀiViÛiÀÊà Õ`ÊLiÊ«>Vi`Ê>ÌÊi>ÃÌÊÎÊv̰ʣʮÊ>LÛiÊÌ i
ground and 3 ft. (1 m) away from a wall or metal surface. The transmitter should
also be at least 3 ft. (1 m) from the receiver. Keep antennas away from noise
sources such as motors, automobiles, neon lights, signal processors, computers, as
well as large metal objects.
UÊÊÀiViÛiÀÊV>ÌÊÀiViÛiÊÃ}>ÃÊvÀÊÌÜÊÀÊÀiÊÌÀ>ÃÌÌiÀÃÊÃÕÌ>iÕÃÞ°
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the unit is not to be used for a long period as the transmitters draw a tiny residual
current to maintain the programmed settings, even when turned off. Also, since
batteries installed for a long time can sometimes corrode and/or leak, causing
damage, it is generally recommended that batteries be removed whenever the
transmitters are not being used.
UÊ7Ê iÊÕÃ}ÊÌ iÊL`Þ«>VÊvÀÊÃÌÀÕiÌÊÕÃi\Ê-VÀ>ÌV ÞÊÃiÃÊV>ÊÃiÌiÃÊVVÕÀ
when an electric guitar with dirty pots or connections is used with a wireless system.
Therefore, the supplied capacitor provides first-order filtering of the RF signal from
the cord into the guitar and eliminates virtually all scratchy noises. Should your
equipment still produce scratchy noise, we suggest these steps to eliminate prob-
lems:
1) Make sure all guitar volume and tone pots are clean and all contacts are
solid. This is very important.
2) Solder a 47pF capacitor across the pot to ground terminal of the guitar’s
volume and tone pots to provide extra filtering.
8. MISCELLANEOUS TIPS
7
UB-800 BODYPACK TRANSMITTER: FRONT VIEW
38. ANTENNA removable antenna—should be attached during operation
39. INPUT JACK locking 3.5mm mini-jack for connecting audio input cord from
lapel mic (LT), Headmic™ (LT/HM), or instrument (GT) cable
40. AUDIO MUTE slide the switch to ON or OFF to mute audio with transmitter
powered
on
41. BI-COLOR BATTERY STATUS LED indicates green for strong usable battery
and red for low battery needing replacement
42. POWER ON/OFF slide switch to power receiver ON or OFF
43. INPUT VOLUME LEVEL adjusts input (LT/HM) audio level for optimal sound
44. IR RECEPTOR SENSOR infrared LED sensor for linking the transmitter to the
receiver during IR selected-frequency download
45. BATTERY COMPARTMENT holds two AAA alkaline or NiMH batteries
46. LATCHING BATTERY DOOR open fully to insert batteries
47. BELT CLIP on back of unit, rotates 180
o
for optimum mounting
48. INSTRUMENT CORD GT cable—connects instrument’s audio output to TX
input
jack
49. HEADMIC™ headworn microphone (choice of models)—connects to
transmitter input jack
50. LAVALIER MIC lavalier (lapel) microphone (choice of models)—connects to
transmitter input jack
48
49
50
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39 40 41 42
43
44
45
46
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