A-A-55481/3
TABLE II.
Tape characteristics.
Grade code
VHS C
S VHS C
Radio frequency (RF) output at 4
-0.5 dB minimum 1/
-1.0 dB minimum 2/
megahertz (MHz)
Video
performance
Video signal-to-noise (S/N)
0.0 dB minimum 1/
-0.5 dB minimum 2/
Color (S/N)
0.0 dB minimum 1/
-1.0 dB minimum 2/
Dropouts (maximum avg/min) 3/
< 15
< 10
Audio
Audio sensitivity at 1 kHz
-1.0 dB minimum 1/
-1.0 dB minimum 2/
performance
1/ Compared to JVC's VRT-2 reference tape as specified in IEC 1105.
2/ Compared to JVC's SRT-1 reference tape.
3/ A dropout is defined as a 20 dB or greater loss in signal output for a period of 15
microseconds.
3.5 Marking. Video recording tapes supplied to this CID shall be marked with either the VHS C
or the S VHS C logo trademark and the manufacturer's standard commercial PIN.
4. QUALITY ASSURANCE PROVISIONS.
Quality assurance provisions shall be as specified in
A-A-55481.
5.
PACKAGING.
Packaging shall be as specified in A-A-55481.
6.
NOTES.
6.1 PIN. The PIN should be used for government purposes to buy commercial products to this CID.
See section 2.1 for PIN format.
6.2 CAGE code. For ordering purposes, inventory control, and submission of these video
recording cassette tapes to DESC under the Military Parts Control Advisory Group (MPCAG)
evaluation program, CAGE code 58536 should be used.
Source of documents.
6.3
Commercial Item Description
A-A-55481
-
Tape, Electronic Data Processing, Cartridge, General Specification for.
(Copies of commercial item descriptions are available from the Defense Printing Service
Detachment Office, Building 4D (Customer Service), 700 Robbins Avenue, Philadelphia, PA 19111-
5094.)
Other Publications
INTERNATIONAL ELECTROTECHNICAL COMMISSION (IEC)
IEC 1077
-
Helical-scan video tape cassette systems using 12.65 mm (0.5 in) magnetic
tape on type VHS, Compact VHS video cassette.
IEC 1105
-
Reference tapes for video tape recorder systems.
(Applications for copies should be addressed to the International Electrotechnical Commission,
1 Rue De Varembe', Geneve, Switzerland.)
VICTOR COMPANY OF JAPAN, LIMITED (JVC)
JVC's Specification for VHS Video Cassette Recording Tapes.
(Applications for copies should be addressed to the Victor Company of Japan, Limited,
Intellectual Property Department, 12, 3-Chome, Moriya-Cho, Kanagawa-Ku, Yokohama 221, Japan.)
(Industry association specifications and standards are generally available for reference from
libraries. They are also distributed among technical groups and using Federal agencies.)
6.4 Government users. To acquire information on obtaining these video recording tapes from the
Government inventory system, contact Defense Electronics Supply Center, ATTN: DESC-EOC, 1507
Wilmington Pike, Dayton, OH 45444-5520, or telephone (513) 296-5625.
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