Telex UR-700 Manuale utente
Telex®
Operating Instructions
UR-700
GENERAL INFORMATION
The Telex Model UR-700 Receiver and associated Transmitters is a
full diversity system operating within the frequency range of 690 to
725 MHz on specific pre-set frequencies. Systems consisting of the
UR-700 and its companion transmitter are capable of operating on
at least 5 frequencies in a TV channel simultaneously, sometimes
more depending on the individual venue. Certain frequencies can be
combined to form a set of systems compatible for simultaneous use.
Posi Phase Diversity
The UR-700 receiver utilizes Telex’s patented Posi Phase auto diver-
sity circuit. Unlike other types of diversity which receive with only
one antenna at a time, Posi Phase utilizes both antennas at all times.
This results in a stronger signal from the microphone for cleaner
audio and greater range.
If the microphone signal begins to go out of phase (a common cause
of “drop outs” with other types of diversity) the Posi Phase circuit
adjusts the phase angle between the two antennas’ receiving circuits
to prevent phase cancellation. This action is indicated by the 0 and
180 degree diversity lights on the front panel
Antennas
There are two TNC type antenna connectors on the rear panel. These
connectors are superior to the more common BNC connectors, both
electrically and mechanically. TNC connectors are becoming the
standardduetotheirheavyuseintheCellularPhoneindustry.Quarter
wave antennas are supplied for normal use or an optional antenna
accessory kit can be used to rack mount the antennas. Optional half
wave antennas with coax can be used for remote installations. Both
antennas must be used as both are active at all times, unlike other
types of diversity that only use one antenna at a time.
-1-
Displays
1. A5segmentLEDlightarrayforAFthataidsinsettingmicrophone
gains and monitoring receiver microphone and line level outputs.
Light numbers 4 and 5 have a Peak Hold feature.
2. A1segment LED light for RF that aids in checking the transmitter
and monitoring for the possibility of initial interference.
3. A 2 segment LED array that indicates diversity action and antenna
configuration.
Audio Outputs
An XLR type connector and 1/4" phone jack are located on the rear
panel providing either line level or microphone level audio output.
The line output level is adjustable with a screwdriver accessible
potentiometer.
Power
The UR-700 will operate from the supplied AC adapter or any
nominal 12-15 volt AC/DC 300 mA supply.
Audio
The UR-700 audio circuitry is designed to complement the transmit-
ter audio. A compandor circuit is utilized to enhance the dynamic
range.
-2-
UR-700 Receiver
Specifications
Frequency Range. . . . . . . . . . . . . . . . . . . . . . . 690-725 MHz
R.F. Stability . . . . . . . . . . . . . . . . . . . . . . . . 0.005% or better
Modulation Type. . . . . . . . . . . . . . . . . FM, 40 KHz nominal
Type. . . . . . . . . . . . . . . . . . Single Conversion, 10.7 MHz I.F.
I.F. Bandwidth. . . . . . . . . . . . . . . . . 230 KHz at -3 db points.
Image Rejection . . . . . . . . . . . . . . . . . . . . . . . 65dB or better
Squelch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Amplitude
Audio Output . . . . Line Level: 0.775V RMS/100k load (MAX.)
Mic Level: -20 dBV, 600 Ohm load
Receiver Sensitivity . . . Less than 0.8 uV for 12 dB SINAD
FCC. . . . . . . . . . . . . . . . . . . . . . . . . . . . Notification, Part 15
Diversity . . . . . . . . . . . . . . Continuous Posi Phase Diversity
Both antennas are fully employed at all times
to maximize signals.
FCC I.D. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B5DR307
-3-
Model HT-700 Transmitter
Specifications
Power Output (Terminated). . . . . . . . . . . . . . . . . . . . 10 mW,
Antenna. . . . . . . . . . . . . . . . . . . . . . . . Permanently attached.
Modulation . . . . . . . . . . . . . . . . FM, +/- 40 KHz Deviation,
50 us pre-emphasis.
Frequency Response (System) . . . . . . . . 50 Hz to 15000 Hz
Microphone. . . . . . . . . . . . . . . . . . . . . . Dynamic or Electret
DC Power . . . . . . . . . . . . . . . . . . . . 9 volt Alkaline Batteries
Battery Life. . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 to 12 Hours
Approvals . . . . . . . . . . . . . . . . . . . . . . . . . . . . FCC, Part 74H
Industry Canada, RSS123
FCC I.D. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B5DH208A
-4-
Model WT-700 Transmitter
Specifications
Power Output (Terminated). . . . . . . . . . . . . . . . . . . . . 10 mW
Antenna. . . . . . . . . . . . . . . . . . . . . . . . Permanently attached
Modulation . . . . . . . . . . . . . . . . . FM, +/- 40 KHz Deviation,
50 us pre-emphasis.
Frequency Response (System) . . . . . . . . 50 Hz to 15000 Hz
Microphone. . . . . . . . . . Dynamic or Electret, + 5 VDC Bias
Microphone Sensitivity. . . . . . . . . . 7.8 mV for full deviation
DC Power . . . . . . . . . . . . . . . . . . . . 9 volt Alkaline Batteries
Battery Life. . . . . . . . . . . . . . . . . . . . . . . . . . . 8 to 12 Hours
Approvals . . . . . . . . . . . . . . . . . . . . . . . . . . . . FCC, Part 74H
Industry Canada, RSS123
FCC I.D. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B5DB108A
-5-
Figure 1
Front Panel
Power Switch: When turned on, one of the diversity lights will
illuminate.
RF Display: A 1-segment LED Display indicates the presence of the
signal from the transmitter.
Diversity Display: LED’s indicate diversity operation.
AF Display: A 5-segment 3 color LED Display indicates the relative
modulation of the microphone.
Squelch: Adjustable for maximum range or minimum interference.
-6-
Figure 2
Rear Panel
Antenna Jacks: Two antenna jacks for posi phase diversity recep-
tion. Attach an antenna to each jack.
Mic Level: XLR type jack connects to balanced mic input of audio
sound system (Amplifier/Mixer). Pin 1 ground, Pin 2 +, Pin 3 -.
Line Level: 1/4" jack with screwdriver adjustable unbalanced audio
output. Use supplied screwdriver to adjust to desired level.
Power Jack: For external AC wall supply adapter (supplied). Will
accept 12-15 volts AC/DC at 300 mA. Plug size is 2.1mm x 5.5 mm.
Power Cord Retainer: To prevent accidental pull out of the power
plug.
-7-
Receiver Set-up
Connect the supplied AC power adapter to an AC outlet supplying
105 to 125 volts AC, 60 Hz. The 230 volt export model should
connect to an AC outlet supplying 210-240 VAC, 50-60 Hz.
Connect the UR-700 to your equipment:
Insert the appropriate audio connector and cable into the mic or
line receptacle on the rear of the UR-700.
Insert the other end of the audio cable into the input of your
Mixer/Amplifier.
If utilizing the two 1/4 wave antennas supplied, connect both of them
tothebackofthereceiverata90 angleas showninFigure 3.Tighten
the connectors securely. (If using other types of antennas, refer to the
placement instructions on page 14 of this manual.)
Figure 3
Antenna Mounting
-8-
Figure 4
HT-700
HT-700
Power and Mute Switches: Located on the bottom of the handle.
Microphone Gain: Controls the gain of the audio circuit to prevent
under or over modulation.
Set-Up
NOTE: Do not use carbon-zinc batteries. 8.4 volt Ni-Cad batteries
may be used but will yield shorter run times.
Unscrew the handle and install a 9 volt alkaline battery. Be sure
the battery polarity matches the diagram inside the battery holder.
Screw the handle back on.
Do not turn on at this time. -9-
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