TopTechnical DictionaryPAL - analogue television standard

PAL - analogue television standard

The system displays 625 scanned lines. The image is scanned from left to right and from top to bottom. Two half-image scans are required to produce a complete image, one for odd lines, and the other for even lines. This type of scan is referred to as interlaced and denoted with “i” interlaced. Half frame scanning time is 1/50th of a second, and it takes 1/25th of a second to produce a complete frame.

 

The value is not random, and is determined by the mains frequency used in Europe (50 Hz). However, the number of displayed lines is not 625, but 576. Thus, in technical literature, the system is sometimes denoted as ‘576i’. NTSC displays only 480 lines.

 

The signal can be transmitted via Composite Video, RCA or S-VIDEO connectors.

 

Fig. 1. Differences in NTSC, PAL and common HD systems resolutions.

 

“x576” refers to the number of displayed lines.

 

Comparison of NTSC and PAL systems shows that PAL resolution is ~20% higher than its US counterpart. However, the higher refresh rate makes the NTSC images smoother.

 

 

Detailed parameters of the standard can be found in the article:

 

Video standards in CCTV

 


Net:0.00 USD
Gross:0.00 USD
Weight:0.00 kg
Especially recommended
MULTI-FUNCTIONAL CCTV TESTER CS-H7-70H
CS-H7-70H

Net: 680.94 USD

TWISTED-PAIR CABLE UTP/K5/305M/ZEL/CON
UTP/K5/305M/ZEL/CON

Net: 0.30 USD

AHD, HD-CVI, HD-TVI, PAL CAMERA APTI-H24V2-28W - 1080p 2.8 mm
APTI-H24V2-28W

Net: 28.33 USD

AHD, HD-CVI, HD-TVI, CVBS, TCP/IP DVR DS-7204HUHI-K1 4 CHANNELS HIKVISION
DS-7204HUHI-K1

Net: 222.26 USD

TWISTED-PAIR CABLE UTP/K5/305M/ZEL
UTP/K5/305M/ZEL

Net: 0.37 USD

QUICK-CONNECTOR S-55*P100
S-55*P100

Net: 16.51 USD

EXTENDER HDMI-EX-120-V3
HDMI-EX-120-V3

Net: 122.57 USD

HDD FOR DVR HDD-ST2000VX003 2TB 24/7 SkyHawk SEAGATE
HDD-ST2000VX003

Net: 72.94 USD

HDD FOR DVR HDD-WD40PURZ 4TB 24/7 WESTERN DIGITAL
HDD-WD40PURZ

Net: 116.35 USD

 
60-713 Poznań, Graniczna 10
tel.: +(48) 61 864 69 66
e-mail: shop@delta.poznan.pl
Working hours
Mon.-Fri.: 8.00 - 19.00
Sat.: 8.00 - 14.00
Sales Department, Shipments
tel.: +(48) 61 864 69 66
e-mail: shop@delta.poznan.pl
Technical Support
tel.: +(48) 61 864 69 98
e-mail: support@delta.poznan.pl
(c) 2001-2019 DELTA