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FBI 100
User Manual
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Extron electronic FBI 100 User Manual

China
+ 86.21.3760.1568 / +4 00.883.1568 + 86.21.3760.1566 FAX
Japan
+81.3. 3511.7655 +81.3. 3511.7656 FAX
Europe
+31.33 .453.4 040 / +800. 3987.6673 +31.33 .453.4 050 FA X
Dubai
+97 1.4.299 1800 +97 1.4.299 1880 FAX
Asia
+65.6 383.440 0 / +800.7339. 8766 +65.6 383.4664 FAX
China
+ 86.21.3760.1568 / +4 00.883.1568 + 86.21.3760.1566 FAX
Japan
+81.3. 3511.7655 +81.3. 3511.7656 FAX
Europe
+31.33 .453.4 040 / +800. 3987.6673 +31.33 .453.4 050 FA X
Dubai
+97 1.4.299 1800 +97 1.4.299 1880 FAX
Asia
+65.6 383.440 0 / +800.7339. 8766 +65.6 383.4664 FAX
FBI 100
Feedback Loop Isolator for Audio and Video
F e ed b a c k l o o p iS o l a t o r S
FeaTures
•
Selectively cuts VCR input path or output path to prevent A/V feedback loop
through VCR
•
Active circuitry provides high performance and noise-free operation
•
Dual-color LED indicates recording mode or playback/stop mode
•
Contact closure control for simple, automated operation
•
Balanced or unbalanced stereo audio input and output
•
Rack-mountable 1U, quarter rack width metal enclosure
•
External universal power supply included, part # 70-055-01 — Provides worldwide
power compatibility
descrIPTI on
The Extron FBI 100 Feedback Loop Isolator is designed to prevent potential feedback loops when a VCR is used for both recording and playback in an A/V system. As the VCR records signals through its A/V input, such as from a video camera and microphone, it outputs the same signals back into the system. The FBI 100 prevents the audio feedback loop, represented as a progressively loud tone that can occur if the VCR output signal is routed back into its A/V input via a switching system.
For example, feedback is likely to occur in a videoconference environment when mixed audio from the videoconference session is simultaneously recorded and introduced back into the system as an active source.
In record mode, the FBI 100 prevents feedback loops by directing the information to be recorded specifically to the VCR's A/V input while isolating the VCR output from the rest of the system. For other VCR modes, such as playback and stop, the VCR outputs to the A/V system as normal.
Contact closure control provides a simple means of selecting the record or playback/stop mode of the FBI 100. Part of the VersaTools® line of small, economical, integrator friendly products, the FBI 100 is housed in a 1U, quarter rack width metal enclosure.
sPecIFIcaT Io ns
VId eo
Gain .. .. . .. .. .. . .. .. . .. .. . .. .. . .. .. . Unity
Bandwidth .. .. . .. .. . .. .. . .. .. . .. .. 10 MHz (-3 dB)
VId eo InP uT
Number / Signal type . .. .. . .. .. . 2 composite video
Connectors . .. .. . .. .. . .. .. . .. .. .. . 2 female BNC
Nominal level . .. . .. .. . .. .. . .. .. . . 1 Vp-p for composite video (including sync)
Minimum / Maximum levels .. . Analog: 0.3 V to 1.5 Vp-p with no offset
Impedance .. .. . .. .. . .. .. . .. .. . .. .. 75 ohms
Input coupling .. .. . .. .. . .. .. . .. .. . DC
VId eo ouT PuT
Number / Signal type . .. .. . .. .. . 2 composite video
Connectors . .. .. . .. .. . .. .. . .. .. .. . 2 female BNC
Nominal level . .. . .. .. . .. .. . .. .. . . 1 Vp-p for composite video (including sync)
Minimum / Maximum levels .. . Analog: 0.3 V to 1.5 Vp-p with no offset
Impedance .. .. . .. .. . .. .. . .. .. . .. .. 75 ohms
syn c
Standards .. . .. .. . .. .. .. . .. .. . .. .. . NTSC 3.58, NTSC 4.43, PAL, SECAM
aud Io
Gain
Overall (from “From Source” to
“To Destination”) . .. .. . .. .. . .. .. . .. Unbalanced output: -6 dB; balanced output: 0 dB
From “From Source” to
“To VCR In” . .. .. . .. .. . .. .. .. . .. .. . . -12 dB
From “From VCR Out” to
“To Destination” .. .. . .. .. . .. .. . .. .. Unbalanced output: +6 dB; balanced output: +12 dB
Frequency response .. .. . .. .. . .. 20 Hz to 20 kHz, ±0.05 dB
THD + Noise .. . .. .. . .. .. . .. .. . .. .. 0.03% @ 1 kHz at nominal level
S/N .. .. . .. .. . .. .. .. . .. .. . .. .. . .. .. . . >90 dB at maximum output (unweighted)
Stereo channel separation . .. . >80 dB @ 1 kHz, >60 dB @ 20 kHz
CMRR .. .. .. . .. .. . .. .. . .. .. . .. .. . .. . >75 dB @ 20 Hz to 20 kHz
aud Io InP uT
Number / Signal type
“From Source” . .. . .. .. .. . .. .. . .. .. 1 stereo balanced/unbalanced
“From VCR Out” .. . .. .. . .. .. . .. .. . . 1 stereo, unbalanced
Connectors
“From Source” . .. . .. .. .. . .. .. . .. .. (1) 3.5 mm captive screw connector, 5 pole
“From VCR Out” .. . .. .. . .. .. . .. .. . . 1 pair RCA
Impedance .. .. . .. .. . .. .. . .. .. . .. .. >12k ohms unbalanced, 24k ohms balanced, DC coupled
Nominal level
“From Source” . .. . .. .. .. . .. .. . .. .. +4 dBu (1.23 Vrms)
“From VCR Out” .. . .. .. . .. .. . .. .. . . -10 dBV (316 mVrms)
Maximum level
“From Source” . .. . .. .. .. . .. .. . .. .. +27 dBu, (balanced) at 1% THD+N
“From VCR Out” .. . .. .. . .. .. . .. .. . . +11 dBV, (unbalanced) at 1% THD+N
Input coupling .. .. . .. .. . .. .. . .. .. . DC
aud Io ouT PuT
Number / Signal type
“To VCR In” . .. .. . .. .. . .. .. .. . .. .. . . 1 stereo, unbalanced
“To Destination” .. .. . .. .. . .. .. . .. .. 1 stereo, balanced/unbalanced
Connectors
“To VCR In” . .. .. . .. .. . .. .. .. . .. .. . . 1 pair RCA
“To Destination” .. .. . .. .. . .. .. . .. .. (1) 3.5 mm captive screw connector, 5 pole
Impedance .. .. . .. .. . .. .. . .. .. . .. .. >50k ohms unbalanced, 100k ohms balanced, DC coupled
Maximum level
“From Source” . .. . .. .. .. . .. .. . .. .. +25 dBu, balanced at 1% THD+N
“From VCR Out” .. . .. .. . .. .. . .. .. . . +11 dBV, unbalanced at 1% THD+N
con Tro L / re MoT e — Fe edb ack Is oLaT or
CP Control Port . .. . .. .. . .. .. . .. .. (1) 3.5 mm captive screw connector, 2 pole contact, controlled by an external
Gen era L
External power supply . .. . .. .. . 100 VAC to 240 VAC, 50/60 Hz, external, to 12 VDC, 1 A (max), regulated
Power input requirements .. . .. 12 VDC, 0.2 A
Rack mount . .. . .. .. . .. .. . .. .. . .. . Yes, with optional rack shelves (See optional accessories.)
Enclosure type .. .. .. . .. .. . .. .. . .. Metal
Enclosure dimensions . .. .. . .. .. 1.7" H x 4.4" W x 3.0" D (1U high, quarter rack wide)
Product / Shipping weight . .. .. 0.7 lbs (0.3 kg) / 3 lbs (2 kg)
control system.
4.3 cm H x 11.3 cm W x 7.6 cm D (Depth excludes connectors)
ModeL VersIon d escrIPTIon ParT #
FBI 100 VCR Feedback Loop Isolator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60-743-01
oPTIonaL accessorIe s ModeL des crIPTIon PaGe ParT #
RSF 123 1U 3.5" Deep VersaTools® Rack Shelf Kit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 818 60-190-20
RSB 123 1U 3.5" Deep Basic Rack Shelf . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 818 60-604-20
MBU 123 VersaTools® Mini Under-Desk Mount Kit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 815 70-212-01
PMK 100 One VersaTools®, 1/4 Rack Width Mini Projector Mounting Kit . . . . . . . . . . . . . . . . . . . page 813 70-217-01
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Extron MLP 101
Mic to Line Preamplier
Extron FBI 100
Feedback Isolator
Speakers
Extron MPA 122
Mini Power Amplier
Microphone
Audio
Audio Feedback is Isolated
VCR
Control System with RS-232
Codec
Video
V
ideo
Audio
Audio
Codec
Speakers
Speakers
Camera
Camera
Table Mic
Table Mic
Over the Air Audio Feedback
Video Conference Room
Results in a very loud single tone.
Results in a very loud single tone.
Results in an endlessly looping image.
VCR
VCR
Electronic Audio Feedback
Electronic Video Feedback
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© 2008 Extron Electronics. All rights reserved. Pricing and specifications may change without notice.
USA West
+1.714.491.1500 / +80 0.633.9876 +1.714.491.1517 FAX
USA East
China
+ 86.21.3760.1568 / +4 00.883.1568 + 86.21.3760.1566 FAX
Japan
+81.3. 3511.7655 +81.3. 3511.7656 FAX
Europe
+31.33 .453.4 040 / +800. 3987.6673 +31.33 .453.4 050 FA X
Dubai
+97 1.4.299 1800 +97 1.4.299 1880 FAX
Asia
+65.6 383.440 0 / +800.7339. 8766 +65.6 383.4664 FAX
FBI 100
F e ed b a c k l o o p iS o l a t o r S
692
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