Lectrosonics T4 User Manual download pdf (Page 14)

IFBT4

LECTROSONICS, INC.

Speciﬁcations

FCC Notices:

Emission designator: 180KF3E

The IFBT4 transmitter is FCC type accepted under Part 74: 470 - 608MHz, 614 - 806MHz and

944.1 – 951.9MHz.

This device complies with FCC radiation exposure limits as set forth for an uncontrolled

environment. This device should be installed and operated so that its antenna(s) are not co-

located or operating in conjunction with any other antenna or transmitter. A separation distance of

at least 20cm (8 inches) must be maintained to comply with the FCC Radio Frequency Maximum

Permissible Exposure (MPE) requirements.

Industry Canada Notices:

Operation of this device is subject to the following two

conditions: (1) this device may not cause interference, and

(2) this device must accept interference, including interference

that may cause undesired operation of the device.

This device has been designed to operate with the antennas

listed below, and having a maximum gain of 6 dB. Antennas

not included in this list or having a gain greater than 6 dB

are strictly prohibited for use with this device. The required

antenna impedance is 50 ohms.

 •LectrosonicsmodelA500RAwhipantenna

 •LectrosonicsmodelSNA500dipoleantenna

Power listed is conducted. The antenna(s) used for this

transmitter are to be ﬁxed-mounted on indoor permanent

structures providing a separation distance of at least 20 cm

from all persons during normal operation. The maximum

radiated output power at each antenna must satisfy the MPE

CategoricalExclusionRequirementsof§2.1091.

To reduce potential radio interference to other users, the

antenna type and its gain should be so chosen that the

equivalent isotropically radiated power (e.i.r.p.) is not more

than that permitted for successful communication.

Operating Frequencies (MHz):

Block 470 470.100 - 495.600

Block 19 486.400 - 511.900

Block 20 512.000 - 537.500

Block 21 537.600 - 563.100

Block 22 563.200 - 588.700

Block 23 588.800 - 607.900 and 614.100 - 614.300

Block 24 614.400 - 639.900

Block 25 640.000 - 665.500

Block 26 665.600 - 691.100

Block 27 691.200 - 716.700 (export only)

Block 28 716.800 - 742.300 (export only)

Block 29 742.400 - 767.900 (export only)

Block 944 944.100 - 951.900

Frequencies (Channels per block): 256

Channel Spacing: 100 kHz (0.1 MHz)

Spurious & Harmonic Suppression: 37 dBc above 1 GHz

Frequency Stability: ±.001% (10 ppm) @ 25° C

Temperature Stability: ±.001% (10 ppm) from -30° C to +50° C

Channel Selection: Momentary pushbutton switches, TUNE Up and Down

Compatibility Modes (6) IFB, Digital Hybrid Wireless

™

(400 Series), 100

Series, 200 Series, Mode 3, Mode 6

Pilot Tone: 29.997 kHz IFB Mode, 32.765kHz 200 Mode, 400

Mode step selected, 32.768kHz Mode 6

Modulation: FM, ±20 kHz deviation IFB & 100 Mode, ±75kHz 200

& 400 Mode, ±50kHz Mode 3 and Mode 6

Audio Frequency Response: • 100 Hz to 8 kHz, ±1 dB, IFB MODE system

response (see Rolloff)

• 30Hz to 20kHz ±1dB, 200 & 400 MODE system

response (see Rolloff)

Low frequency audio rolloff: Menu selectable for 3 dB down at 35 Hz or 50 Hz

Signal to Noise Ratio: 90 dB typical (“A” weighted)

RF Power Output: 250 mW (nominal)

Output Impedance: 50 Ohms

Audio Input Levels: 0 dBu for Line, RTS1 & RTS2

-10 dBu for Clear Com

-42 dBu for mic dry inputs, +/-50 VDC max.

Audio Input Conﬁg: Balanced and Unbalanced, rear panel selectable for

Line, Mic. RTS 1, RTS 2, and Clear Com

Audio Input Impedance: Greater than 2 K balanced, greater than 1 K

unbalanced at any gain setting

Gain Control Range: -18 dB to +24 dB (0 dB nominal center), software

selectable

Audio Input Jack: Standard XLR female connector

Input Power: 12 to 14 VDC typical, 200 mA max.; Max. input range

6 to 18 VDC

Power Input Jack: Coax type, locking LZR RL26AE

Indicators: Backlit Liquid Crystal Display. Displays modulation

meter, frequencies, modes, audio rolloff, audio level,

and tuning groups.

Front panel controls: • MENU momentary pushbutton switc

• Power OFF-TUNE-XMIT, 3 position slide switch

• Select Up momentary pushbutton switch

• Select Down momentary pushbutton switch

Rear panel controls: Input Mode Select, 4 section DIP switch

Weight: 9 oz.

Size: 5.25” x 3.25” x 1.25” (including connectors)

Speciﬁcations subject to change without notice.

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Lectrosonics T4 User Manual Page 14

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