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4

CONTROLS AND FUNCTIONS

INPUT JACK

The 5-pin input jack accommodates virtually every lavalier, hand-held or shotgun microphone available.  Use a
Switchcraft TA5F connector on the cord.  See the separate sheet titled “Transmitter 5-Pin Input Jack Wiring” regarding
the correct connections for various microphones, and other sources.

ON/OFF SWITCH

Turns the battery power on and off.

“ON” LAMP

Glows brightly when the battery is good.  A weak or dim lamp means that the battery is weak, and has about half an
hour of operation left.  If the lamp fails to light, the battery should be replaced.

The “ON” lamp is connected to a precision battery test circuit that continuously monitors battery voltage.  The LED is
at full brightness with a new 9 Volt battery.  As the battery voltage drops during use, the LED brightness will also
decrease.  When the LED is barely visible, there will still be 30 minutes or more operating time remaining.

Since the internal circuits are all tightly regulated and the RF output stage has a separate discrete regulator, the
transmitter will continue to operate to a battery voltage of 6.5 Volts.  From 6.5 Volts to 6 Volts, the transmitter will still
operate, but with degraded performance.  Please note that a weak battery will sometimes light the POWER LED
immediately after turn on, but will soon discharge to the point where the LED will go out, just like a flashlight with
“dead” batteries.

The combination of an accurate battery condition indicator and regulation of all internal circuits provides much longer
battery life, as well as consistent performance over the life of the battery.

LF

ROLL-OFF

Adjustment

ANTENNA

OFF  ON

–20

0

LECTROSONICS

UM195B

LEVEL

AUDIO

LF ROLL OFF

SN:

XXXX

35

150

75 Hz

FCC ID: DBZUM195

Lectrosonics, Inc.

Made in U.S.A.

Summary of Contents for UM195B

Page 1: ...UM1 95B UHF BELT PACK TRANSMITTER LECTROSONICS INC Rio Rancho NM OPERATING INSTRUCTIONS and trouble shooting guide...

Page 2: ...the input connector to power electret mics with either positive or negative bias Level indicating LEDs are provided on the control panel to make level settings quick and accurate without having to vie...

Page 3: ...ndor are fast enough to keep high frequency transient distortion at a low level and the low frequency compandor uses slower time constants reducing low frequency distortion to well below that of a con...

Page 4: ...ng use the LED brightness will also decrease When the LED is barely visible there will still be 30 minutes or more operating time remaining Since the internal circuits are all tightly regulated and th...

Page 5: ...with the 3dB point adjustable from 35Hz to 150Hz The actual roll off frequency will vary somewhat according to the low frequency response of the mic capsule being used The low frequency roll off contr...

Page 6: ...rtment press outward on the cover door in the direction of the arrow as shown in the drawing Only firm sliding pressure is needed to open and close the battery door Swing the door open and take note o...

Page 7: ...G NOTES The AUDIO LEVEL control knob should not be used to control the volume of your sound system or recorder levels This gain adjustment matches the transmitter gain with the user s voice level and...

Page 8: ...ructions Caution Do not allow the shield wire to touch any metal part of the connector shell The shield wire is the antenna on VHF models and poor operating range will result Shield Wire Crimp Tabs Ru...

Page 9: ...them sensitive to RF which can cause problems with the microphone transmitter compatibility If the electret microphone is not designed properly for use with wireless transmitters it may be necessary t...

Page 10: ...The normal hookup for line level signals is Signal Hot to pin 5 Signal Gnd to pin 1 pin 4 jumped to pin 1 and pin 3 jumped to pin 1 This gives a 40dB attenuator that allows signal levels much higher t...

Page 11: ...F 1 Transmitter mic gain set too low 2 Defective microphone or cord NO SOUND OR LOW SOUND LEVEL RECEIVER MOD LEVEL LEDs ARE ON 1 Receiver output level set too low 2 Receiver output is disconnected cab...

Page 12: ...l LEDs indicate modulation level 20dB below limiting and at the onset of limiting Controls 2 position OFF ON slide switch Front panel knob adjusts audio gain Audio Input Jack Switchcraft 5 pin locking...

Page 13: ...ere is a charge for an exact quotation We will be happy to quote approximate charges by phone for out of warranty repairs RETURNING UNITS FOR REPAIR You will save yourself time and trouble if you will...

Page 14: ...rosonics Inc or an authorized dealer shipping costs prepaid within one year from the date of purchase This Limited Warranty is governed by the laws of the State of New Mexico It states the entire liab...

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