Jensen Transformers VBH-5BB User Manual

VIDEO GROUND LOOP CORRECTOR

FOR 75 Ohm SYSTEMS

M 56dB of CMRR typ at 60Hz minimizes ground loops
M DC to 900MHz bandwidth for excellent picture quality
M Greater than 1 Vrms 60Hz common-mode level handling
M VSWR under 1.1 at 100MHz to prevent waveform distortion
M Insertion loss of 0.05 dB maintains maximum S/N ratio

The ISO-MAX® VBH-5BB reduces ground current induced video interference
such as “hum bars” by a factor of over 100, eliminating the visible effects of these
types of interference. The high bandwidth and low VSWR prevent degradation
of the picture quality due to high frequency roll-off and cable reflections.

VBH-5BB

ISO-MAX® VBH-5BB SPECIFICATIONS

(source Z = load Z = 75 Ohms, signal level = 1Vpp unless otherwise noted, specifications apply to all 5 independent channels)

PARAMETER CONDITIONS MINIMUM TYPICAL MAXIMUM

Input impedance, Zi 1 0kHz, test circuit 1 75S

Insertion Loss 10 kHz, test circuit 1 (referred to -6.02dB) !0.05 dB !0.10 dB

100kHz, test circuit 1 (referred to -6.02dB) -0.005 dB

High Frequency Response,
ref 10 kHz

Low Frequency Response test circuit 1 DC

Common-mode Rejection Ratio

Maximum Common-mode Voltage 60 Hz, test circuit 3, 3% THD 1.4 Vpeak 1.7 Vpeak

Inductance 60 Hz, 500mVrms, shield, input to output 200mH

DC resistance

Capacitance center conductor to shield 200 pF

Time Delay Skew between channels 0.1 nS 0.5 nS

Weight 6.28 lbs.

Temperature range operation or storage 0E C70E C

1MHz, test circuit 1 (referred to -6.02dB) -0.05 dB

3.58MHz, test circuit 1 (referred to -6.02dB) -0.10 dB

10MHz, test circuit 1 (referred to -6.02dB) -0.20 dB

100MHz, test circuit 1 (referred to -6.02dB) -1.00dB !0.80 dB

60 Hz, test circuit 2, no cable 50dB 56dB

60 Hz, test circuit 2, with 100 feet of RG-59/U cable at input 48dB

center conductor, input to output 0.70 S

shield, input to output 0.20 S

All minimum and maximum specifications are guaranteed. Unless noted otherwise, all specifications apply at 25EC. Specifications subject to change
without notice. All information herein is believed to be accurate and reliable, however no responsibility is assumed for its use nor for any infringements of
patents which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of Jensen Transformers, Inc.

JENSEN TRANSFORMERS, INC., 7135 Hayvenhurst Avenue, Van Nuys, CA 91406-3807, USA

3/03

[phone] • FAX [phone] • www.jensen-transformers.com