System Operation, UWS-100 Receiver | Nady Systems UWS100LTHM20U

System Operation

UWS-100 Receiver

Powering the Receiver

To power the receiver, plug the provided DC POWER SUPPLY UNIT (14) adapter into the DC INPUT JACK (8) on the back of the receiver, then plug the adapter into a 120VAC outlet.

Note: Any 15-18VDC source with minimum 400mA capacity can also be used.

The Power Rocker Switch (9) is used to turn the receiver on or off. To turn on, press down the right side of the switch (“I”). The LED Display (3) will light, showing Channel 00‑99. The AF LED (4) and RF A/B LEDs (5) remain dark. They will display the received RF A/B and audio level when the transmitter is activated and audio transmitted. To turn off, press down the left side of the switch (“O”). The receiver will turn off. All the LEDs will be turned off, indicating the receiver is off. At power off the UWS-100 receiver will store the last selected channel and re-display them at power on. It can be reprogrammed to any new channel. The default factory setting is Channel 14.

Rackmounting Receivers

A single or dual UWS-100 receivers can be rackmounted with the optional RMT-1KUD rack tray.

Adjusting the Squelch

The MUTE LEVEL/RF SQUELCH (13) controls the mute circuits in the receiver. The control should be adjusted clockwise to the minimum RF squelch setting at which the RF A/B LED (5) will remain on while your transmitter is in normal use, up to the maximum operating range anticipated in use for your application. However, in areas of high RF activity, the squelch control may need to be adjusted counterclockwise. If the transmitter is off and the receiver signal diversity A or B LED indicator flickers or stays on continuously, the squelch should be adjusted counterclockwise to a higher level to stop the flickering. Be careful

not to select too high a counterclockwise setting as this may reduce the operating range to below what is needed. A range walk test will help in selecting the proper level. If the range is not critical, note that a counterclockwise (maximum squelch) setting will also yield a quieter mute function, which might be desired in certain applications. The squelch level is factory preset at maximum sensitivity and operating range (i.e. clockwise for minimum squelch level—maximum usable range).

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.

Press the Select button for one second to start the 100 channel (00-99) Autoscan for open frequencies. A running bar in a clockwise direction shows the scanning process which normally takes ten seconds. When it finds an interference-free channel, it will stop and store the channel for use.

If manual channel selection is preferred, press and hold the Select button for at least two seconds to start programming to a desired channel. The right digit will flash for five seconds. Select the desired digit by briefly pressing the Select button to scroll though choices 0-9 until the desired number is displayed. Then, to switch between the right and left digits, press and hold the Select button for two seconds. As with the right digit, briefly pressing the Select button again will advance the left digit displayed to the next higher number

0 to 9. This completes the manual channel programming.

Note: If the Select button is not pressed within the five seconds flashing period during either the right or left digit selection, the program is terminated and the process needs to be repeated.

The ASC Sync Button (7) is used to transfer the selected channel info from the receiver to the transmitter for easy synchronization prior to use. Briefly press the ASC Sync button to start the transfer. A red LED inside the IR LED (6) window will flash twice quickly within two seconds. This LED indicates

IR transmission is in progress. If needed, press the ASC Sync button again, to restart

Instructions for Setup of Simultaneous Multichannel Operation

The UWS-100 receiver is capable of finding an open channel with its Autoscan capability. This built-in feature is a quick, convenient way to set up many wireless systems at the same location for simultaneous multichannel operation.

If you are using multiple transmitters at the same location, set up the first transmitter and leave it ON and keep 10 feet away from the receivers and 1 foot away from transmitter to transmitter. This avoids possible duplicate selection of the same channel as already selected for the first receiver. Then start the Autoscan function on the second UWS-100 receiver. Repeat this procedure for all receivers/transmitters to be used in your system. Finally with all the transmitters ON, perform a range walk test in the location these systems will be used in to check for potential crosstalk interference in this application.

If you are not satisfied with any of the channels scanned, repeat the Autoscan procedure for that receiver again anytime for finding another free channel.

Audio Level and Peak LED Indicator

The UWS-100 receiver has a bi-color AF LED (4) that lights up green indicating normal level audio signal from the

Adjusting Antennas

The UWS-100 has two permanently attached, flexible elbow antennas (1) for diversity 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 other. For maximum range, it is always best to maintain a line-of-sight (no obstructions) between the receiver antennas and the transmitter at all times whenever possible.

Selecting the UWS-100

Receiver Channel

See RF Interference and Finding Open Channels in the Cautions and Troubleshooting section. This section will also aid in finding desired channel(s) of operation when setting up your system(s).

The Select Button (2) has two functions. A short press (~1 second) scans for a clear channel and a long press (> 2 seconds) manually programs a desired channel.

synchronization. When the synchronization is completed successfully, either the diversity RF A or B LED (5) on the receiver will light up.

To program the preselected channel into the transmitter, place the transmitter’s

IR Receptor Sensor Window (17, 29)

6-12” away from the receiver’s IR Window

(6). Press the ASC Sync Button (7) once to start programming. (See Programming the UHT/UBT-100 Transmitters to the Selected Channel in the following section.)

transmitter. Occasional flickering of the

AF LED as orange (peak level) on loud inputs to the transmitter is normal. If the LED lights orange continuously, decrease the input audio level to the transmitter or overload distortion may result.

Connecting the Audio Output

The UWS-100 audio output is set up for either adjustable level ¼” Unbalanced Line Out (11) or fixed level XLR Balanced Mic Out (10). The ¼” unbalanced line out