North Hills™Signal Processing Corp.
ISO 9001:2008 Certified
PCB MOUNT VIDEO FIELD TILT CORRECTOR
Blocking capacitors and inductive loads will limit the
low-frequency response in a video transmission network. The
result is field tilt that, if excessive, may ruin sync and picture
quality. The field tilt at a cut-off frequency of 1Hz will be 5.1%, at
10Hz, 40.8%. A common cut-off frequency recommendation for
video transmission is 5Hz (23% tilt).
The NH16580 Video Field Tilt Corrector will restore the ­original
waveform with minimal residual tilt.
The input of the NH16580 is ac-coupled, and provides
ac-coupled and DC-coupled outputs.
The DC-coupled output can be used with devices such as:
­televisions, flat-panel displays, DVD players, digital camcorders,
digital still cameras, video-capable cell phones, portable video
game consoles, PDAs and notebook computers.
Some video equipment requires ac-coupling on it’s input to
protect the equipment from any short circuit to ground. The
NH16580 provides this protection and the ac-coupled output can
also be used if you need to remove the dc-biased ­output and set
your own levels.
North Hills NH16580 Video Field Tilt Corrector
North Hills Application Note 153 - “Ground Isolation in Video
­Transmission”
Features:
Benefits:
•
•
•
•
Flat frequency and linear phase response
Output ac-coupled, preventing short
circuits to ground for ac-coupled video equipment, 75Ω
DC-coupled input, 75Ω
North Hills™Signal Processing Corp.
•
•
Eliminates picture quality problems easily and efficiently
Compatible with TV’s, flat-panel displays, DVD players, digital camcorders, etc., using the DC-coupled output
Easy to install
6851 Jericho Turnpike
Syosset, NY 11791
Phone: 516-682-7700
Fax: 516-682-7704
A Leading Provider of Measurement and Connectivity Solutions
www.northhills-sp.com
PCB MOUNT VIDEO FIELD TILT CORRECTOR
Will restore the ­original waveform with minimal residual tilt. Two 75Ω outputs are ­provided: One
DC-coupled and one ac-coupled.
Simplified Schematic:
Figure 1. Field-Tilted Input Signal to Tilt Corrector
(Using 1 Vp-p HiLo Trk Signal)
Electrical Specifications:
Parameter:
Value:
Gain
1
Freq. Response (3dB Typical):
DC-Coupled Output:
ac-Coupled Output:
DC - 45 MHz
1 Hz -45 MHZ
Differential Gain
1%
Differential Phase
0.5° Typical
Group Delay (@3.58MHz)
20 ns Typical
Maximum Field Tilt DC (Output 1)
AC (Output 2)
Input:
1 Vp-p nominal 75Ω, DC-coupled
Output 1:
Figure 2. 1 Vp-p Tilt-Corrected Output Signal
(Using a 1 Vp-p HiLo Trk Signal)
3%
5.1%
DC-Coupled, 75Ω
Output 2
ac-Coupled, 75Ω
Power:
+5VDC; 10mA maximum, quiescent
Mechanical Specifications:
Case Style:
Material Case
Diallyl Phthalate
Finish
Case - Tin/Lead Plate (60/40)
Weight
6 Grams (Nominal)
ORDERING INFORMATION:
Model#
NH16580
Specifications subject to change without notice.
North Hills™Signal Processing Corp.
6851 Jericho Turnpike
Syosset, NY 11791
Phone: 516-682-7700
Fax: 516-682-7704
A Leading Provider of Measurement and Connectivity Solutions
www.northhills-sp.com
NH-WB-DAT-108