Nady Systems U-800 User manual

U-800
UHF 800-Channel Wireless System
OWNER’S MANUAL

CONTENTS
2
1. INTRODUCTION
2. USING THIS MANUAL
This booklet provides instructions for the operation of the U-800 and includes a
description of features, a quick user controls guide, a step-by-step guide to operations
for each unit, system specifications, a troubleshooting guide, miscellaneous tips, and
servicing information.
1. INTRODUCTION................................................................................2
2. USING THIS MANUAL .......................................................................2
3. SYSTEM FEATURES ............................................................................3
4. QUICK USER CONTROLS GUIDE........................................................4
5. SYSTEM OPERATION .........................................................................8
6. SELECTING GROUP/CHANNEL, IR PROGRAMMING
AND SIMULTANEOUS MULTICHANNEL OPERATION ........................14
7. CAUTIONS AND TROUBLESHOOTING.............................................17
8. MISCELLANEOUS TIPS .....................................................................18
9. SPECIFICATIONS .............................................................................19
10. FREQUENCY PLAN ........................................................................20
11. FREQUENCY LISTS.........................................................................21
12. OPTIONAL ACCESSORIES .............................................................22
13. SERVICE INFORMATION................................................................22
14. ONE YEAR LIMITED WARRANTY ....................................................23
Thank you for choosing the Nady U-800 wireless system, and congratulations on
your choice. The U-800 has the best performance and price value in professional
UHF wireless, offering clear-channel, frequency-agile operation on the UHF band for
interference-free performance in any application or locale. The U-800 delivers 800
user-selectable, frequency synthesized channels in the US frequency band 470MHz-
490MHz. The Nady U-800 offers built-in Autoscan for quick and convenient open
channel selection and set up of one system, or many wireless systems at the same
location for simultaneous multichannel operation. The U-800 features proprietary
companding and low-noise circuitry for an industry-best 120dB dynamic range, and
the clearest, most natural sound available in wireless today

3
U-800 RECEIVER

range operation, up to 500 ft. (line-of-sight)
 
selection
 
transmitter via IR sender for easy frequency synchronization
 
same location
 
available from 10 optimized factory pre-set groups of up to 14 compatible channels and 5
additional user-select groups, all offering 800 channels each. All groups retain in memory the
previously selected channels for that group for easy setup subsequently in the same location.
 
 
 
transmitter ON/OFF switching
 
 
status, RF/AF level, Mute (squelch) level, and push On/Off power switch
 

 
or dual receivers (side-by-side) optional rack mounting
 
 

UH-800 HANDHELD MIC TRANSMITTER

 

 
receiver’s selected channel
 
 

 
 
UB-800 BODYPACK INSTRUMENT TRANSMITTER

 
selected channel
 
 
 
 
 
for mic or instrument cable
3. SYSTEM FEATURES

4
1. POWER BUTTON BUTTON push in to power receiver ON or OFF
2. POWER LED LED indicates receiver is turned ON
3. DUAL ANTENNAS permanently mounted., rotate to 45° as shown for optimal
reception
4. ASC/IR infrared LED window for sync receiver and transmitter. Transmits LED
Infrared signal for linking the receiver to the transmitter for frequency downloads
5. LCD DISPLAY shows receiver current status
6. MUTE ICON indicates audio muted
7. AF INDICATOR displays received Audio level
8. RF INDICATOR displays received radio signal level
9. A/B INDICATORS indicates diversity A or B antenna reception when
transmitter is on
10. IR INDICATOR
sync is in progress
11. GROUP indicates group number
12. CHANNEL indicates channel number
13. MUTE LEVEL shows muting level
14. SCAN ICON indicates scanning is in progress
15. FREQUENCY indicates frequency in MHz
16. UP BUTTON BUTTON to change the receiver MUTE level up, GRP/CH up by

17. DOWN BUTTON to change the receiver MUTE level down, GRP/CH down by
one step at a time
18. MENU BUTTON
once to start the Auto Scan/IR/Sync function or to manually select GR/CH
Use MENU BUTTON for easy set up with ONE TOUCH PROGRAMMING. Start
the IR link download of the receiver’s selected channel to the transmitter. Position

IR window, press the MENU button once and wait five second, the receiver will
4. QUICK USER CONTROLS GUIDE

1
2
3
4
5
16
3
18
17
11 10 12
14
15
13
9
6
7
8

SCAN and IR automatically for the open channel. The IR INDICATOR will flash
for 2 seconds. If the IR data download is successful, the receiver’s RF (8) and
A/B INDICATORS (9) will also be on, indicating channel transfer is complete.
See also section “6. Selecting Group/Channel, IR Programming and
Simultaneous Multichannel Operation”
5
19. UNBALANCED LINE OUT ¼” JACK 
with Volume control
20. DC INPUT JACK
(DC22VDC/400mA)
21. VOLUME CONTROL Selects desired output volume level for the Unbalanced
Line Out
22. BALANCED MIC OUT XLR JACK
23. DC POWER SUPPLY ADAPTER 120VAC/22VDC/400mA
24. SIDE MOUNT CLIP removes to leave space for optional rack ears
25. ERM-12 SINGLE RACK KIT optional rack ears for single receiver rack
mounting
26. EJC-3 JOINING CLIP
side-by-side for dual rack mounting
27. ERM-22 DUAL RACK KIT optional rack ears for rack mounting two
receivers side by side

19 20 21 22
25
24
25
23
24
27
26
27


6
28. MIC BALL/ ANTENNA windscreen also functions as antenna, so for best
operating range do not handle this antenna during use
29. BATTERY COVER unscrew CCW to open battery tube to insert batteries
30. AUDIO INPUT LEVEL normally set at middle position, turn knob with small
flat head screw driver for optimum sound
31. TWO AA BATTERIES operating from two AA batteries
32. BATTERY COMPARTMENT holds two AA alkaline or NiMH batteries,
observe correct polarity
33. POWER ON LED indicates the transmitter ON (green)
34. LOW BATTERY LED indicates the batteries are weak (red)
35. RF POWER slide the switch to power the transmitter ON or OFF
36. AUDIO MUTE slide the switch to ON or OFF to mute audio with transmitter
powered on
37. IR RECEPTOR SENSOR/WINDOW infrared LED sensor for linking the
transmitter to the receiver during IR selected frequency downloads
OFF ON
29
28
30
31
33 34
36
35
37 32

7

38. ANTENNA 
39. INPUT JACK 

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
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
48. INSTRUMENT CORD 

49. HEADMIC™ 

50. LAVALIER MIC

48
49
50
38
39 40 41 42
43 44
45
46
47

8
U-800 RECEIVER
Button Function
The POWER ON Button (1) is used to power receiver ON or OFF. When the
power button is pressed, the POWER LED (2) and the white backlight on the LCD
DISPLAY (5) will light up indicating the receiver is ready. Press the Power button
again to turn off the receiver. The power LED and the backlight on the LCD will be off
indicating the receiver is off. At power-off the U-800 receiver will store the last set-
tings entered and re-display them at power-on. It can be reprogrammed to any new
Group/Channel, or Mute level. The default factory setting is Group 11, Channel 01
and Mute 0 on the first LCD menu screen.
The UP BUTTON (16) is pressed one step at a time to SCAN, IR or to increase
GROUP, CHANNEL, MUTE by one level each time
The DOWN BUTTON (17) is pressed one step at a time to decrease GROUP,
CHANNEL, MUTE by one level each time
The MENU BUTTON (18) is pressed one step at a time for Auto Scan Frequency

menu will cycle through the following screens.v
During manual programming, press the MENU BUTTON (18) to confirm the selec-

after 5 sec.
Rack Mounting the Receiver

by-side with another U-800 receiver.
 SIDE MOUNT CLIP (24) from each side of
the receiver (as shown) and slide in the optional ERM-12 RACK EARS (25).
 SIDE MOUNT CLIPS (24)
EJC-3 JOINING CLIP
(26) and attach the ERM-22 RACK EARS (27) as shown.


adequate airflow and heat dissipation in any rack configuration.)
5. SYSTEM OPERATION

9
Powering the Receiver
Plug the AC/DC ADAPTER (23) provided into the DC INPUT JACK (20)

Any 22V DC source with 400mA capability can also be used.) Press the POWER
SWITCH (1) once to turn on the receiver. The POWER ON LED (2) and the LCD
DISPLAY (5) will now light and the receiver is operational.
Adjusting Antennas
ANTENNAS (3) for diver-
sity reception. Unfold and rotate these antennas to operate the receiver. The optimal
positions of the antennas are flared 45° out from the receiver sides and 90° from each

between the receiver antennas and the transmitter at all times whenever possible.
Adjusting the Mute Level/ RF Squelch
The MUTE LEVEL/RF SQUELCH (13) can be changed anytime during the main
screen display to quiet the receiver in high noise environment condition. The control

for the minimum RF squelch setting at which the RF INDICATOR (8) will remain on
-
pated in use for your application. However, in areas of high RF activity, the squelch

receiver’s signal RF INDICATOR (8) or the diversity A or B INDICATOR (9) flickers

the flickering. Be careful not to select too high a number setting as this may reduce
the operating range to below what is needed. A range walk test will help in select-

squelch) setting will also yield a quieter mute function, which might be desired in


Note: For easier intuitive operation, the MIN and MAX indications for this control
refer to the minimum and maximum operating range settings, not to the actual mute
levels selected, which are the opposite as per above.

10
SYSTEM OPERATION
Audio Level and Peak LED Indicator
The U-800 receiver has a 5 bar AF LCD (7) display that typically shows a few bars
indicating normal level audio signal from the transmitter. Occasional flickering of
the fifth AF LCD (peak level) on loud inputs to the transmitter is normal. If the AF LCD
lights up full bars continuously decrease the input audio level to the transmitter or
overload distortion may result.
Connecting the Audio Output

UNBALANCED LINE OUT (19) BALANCED MIC
OUT XLR JACK (22)VOLUME
CONTROL (21).




(Note: When using the UB-800 instrument transmitter system, connect the
Unbalanced Line Out directly to your instrument amp or preamp. At maximum
receiver volume setting, the system output is approximately +4dB higher than a direct
cord-to-amp connection.)


amplifier and control the audio levels from there.


drawing for the audio cable/connector wiring.
Your U-800 receiver is now operational and ready to use. Proceed to the following
instructions for the UH-800 handheld microphone transmitter or UB-800 bodypack
transmitter included with your system.
Note: As when making any connection, make sure the amplifier or mixing board
volume is at the minimum level before plugging in the receiver to avoid possible
sound system damage.
Note: : Only one transmitter can be used with one receiver. It is not possible to use
two transmitters on the same frequency and mix the output of these transmitters into
one wireless receiver.
F-XLR
Pin 2: +
Pin 2: +
1/4” Plug
SLEEVE TIP
Pin 1: Ground
Tip = signal (+)
Sleeve = ground