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Lectronics IFBT4-VHF Instruction Manual

Manual is about: Synthesized VHF IFB Transmitter

Summary of IFBT4-VHF

  • Page 1

    Ifbt4-vhf synthesized vhf ifb transmitter instruction manual rio rancho, nm, usa www.Lectrosonics.Com fill in for your records: serial number: purchase date: featuring digital hybrid wireless ® technology u.S. Patent 7,225,135.

  • Page 2

    Ifbt4-vhf lectrosonics, inc. 2.

  • Page 3

    Synthesized vhf ifb transmitter rio rancho, nm 3 table of contents general technical description ............................................4 introduction .........................................................................4 audio input interface ..................................................

  • Page 4

    Ifbt4-vhf lectrosonics, inc. 4 introduction this version of the ifb “base station” transmitter oper- ates in the television broadcast band from 174 to 216 mhz (us tv channels 7 through 13). It will tune across the entire band, so clear frequencies can be found almost anywhere. The vhf spectrum has n...

  • Page 5

    Synthesized vhf ifb transmitter rio rancho, nm 5 digital hybrid wireless ® technology the design is based upon the patented lectrosonics digital hybrid wireless ® system.* while at the time of the first release of the product, there is only a compan- ion analog receiver, the digital hybrid wireless ...

  • Page 6

    Ifbt4-vhf lectrosonics, inc. 6 the main window navigates to the frequency window. The frequency window displays the current operating frequency in mhz, as well as the standard lectrosonics hex code. Also displayed is the uhf television channel to which the selected frequency belongs. In xmit mode, i...

  • Page 7

    Synthesized vhf ifb transmitter rio rancho, nm 7 ifbt4 menu diagram of a 4 pole lowpass digital filter. The 50 hz setting is the default, and should be used whenever wind noise, hvac rumble, traffic noise or other low frequency sounds may degrade the quality of the audio. The 35 hz setting may be us...

  • Page 8

    Ifbt4-vhf lectrosonics, inc. 8 rear panel controls and functions ifbt4 rear panel xlr jack a standard xlr female jack accepts a variety of input sources depending on the setting of the rear panel mode switches. Xlr pin functions can be changed to suit the source depending on the positions of the ind...

  • Page 9

    Synthesized vhf ifb transmitter rio rancho, nm 9 frequency selection the r1a-vhf receiver provides two 16-position rotary switches to select the frequency, adjusted with a small screwdriver inserted in the slot in the middle of the switches. The left-hand switch makes 2.8 mhz steps and the right-han...

  • Page 10

    Ifbt4-vhf lectrosonics, inc. 10 installation and operation 1) the ifbt4 transmitter is shipped with pin 1 of the xlr input connector tied directly to ground. If a floating input is desired, a ground lift jumper is provided. This jumper is located inside the unit on the pc board near the rear panel x...

  • Page 11

    Synthesized vhf ifb transmitter rio rancho, nm 11 accessories ch20 power supply for ifb base transmitters with lock- ing lzr power jacks; 110 vac input, 12 vdc regulated output; 400 ma max. A170ac vhf straight whip antenna; right angle bnc con- nector arg15 a 15 foot antenna cable of standard rg-58 ...

  • Page 12

    Ifbt4-vhf lectrosonics, inc. 12 troubleshooting note: always ensure that the compat (compatibility) setting is the same on both transmitter and receiver. A variety of different symptoms will occur if the settings do not match. Symptom: possible cause: display dead 1) external power supply disconnect...

  • Page 13

    Synthesized vhf ifb transmitter rio rancho, nm 13 specifications operating frequencies (mhz): 174.100 to 215.750 mhz available frequencies: 239 channel spacing: 175 khz rf power output: 50 mw frequency stability: ±.001% (10 ppm) @ 25° c temperature stability: ±.001% (10 ppm) from -30° c to +50° c ch...

  • Page 14

    Ifbt4-vhf lectrosonics, inc. 14 service and repair if your system malfunctions, you should attempt to correct or isolate the trouble before concluding that the equip- ment needs repair. Make sure you have followed the setup procedure and operating instructions. Check the inter- connecting cables and...

  • Page 15

    Synthesized vhf ifb transmitter rio rancho, nm 15.

  • Page 16: Limited One Year Warranty

    20 october 2015 581 laser road ne • rio rancho, nm 87124 usa • www.Lectrosonics.Com +1(505) 892-4501 • fax +1(505) 892-6243 • (800) 821-1121 us and canada • sales@lectrosonics.Com limited one year warranty the equipment is warranted for one year from date of purchase against defects in materials or ...