SMPTE RP 107-1995 Video and Audio Reference Tape for 1-in Type B Helical-Scan Format《1-in B型螺旋扫描格式的视频和音频基准磁带》.pdf
《SMPTE RP 107-1995 Video and Audio Reference Tape for 1-in Type B Helical-Scan Format《1-in B型螺旋扫描格式的视频和音频基准磁带》.pdf》由会员分享,可在线阅读,更多相关《SMPTE RP 107-1995 Video and Audio Reference Tape for 1-in Type B Helical-Scan Format《1-in B型螺旋扫描格式的视频和音频基准磁带》.pdf(4页珍藏版)》请在麦多课文档分享上搜索。
1、 _ SUPTE RP*107 95 m 8357401 0002099 796 m SMPTE RECOMMENDED PRACTICE RP 107-1995 Revision of RP 107-1988 Video and Audio Reference Tape for 1-in Type B Helical-Scan Format 1 Scope This practice specifies a video and audio reference tape to be used with 1-in type B helical-scan video tape recorders
2、as defined in ANSVSMPTE 15M. It is i to be used for: ! indication of video frequency response charac- teristics for both main and sync channels of the reproducing system; adjustment of gain of the video reproducing system; comparison of carrier frequencies of the video recording system; verification
3、 of level and phase of the control track recording system; adjustment of the gain of the program audio repro- ducing system; indication of the audio frequency response of the audio reproducing system; comparison of the audio recording gain and frequency response characteristics of the audio recordin
4、g system; verification of levels and timings of time code infor- mation recorded on audio 3 record. 2 Normative references The following standards contain provisions which, through reference in this text, constitute provisions of this practice. At the time of publication, the editions indicated were
5、 valid. All standards are subject to Page 1 of 4 pages revision, and parties to agreements based on this practice are encouraged to investigate the possibility of applying the most recent edition of the standards indicated below. ANSI 54.6-1 982 (R1992), Method of Measuring Recorded Flux of Magnetic
6、 Sound Records at Medium Wavelengths ANSVSMPTE 12M-1995, Television, Audio and Film - Time and Control Code ANSVSMPTE 17M-1992, Television Analog Record- ing - 1-in Type B Helical Scan - Frequency Response and Operating Level ANSVSMPTE 26M-1995, Video Recording - 1 -in Helical-Scan Recorders - Raw S
7、tock for Reference Tapes ANSI/SMPTE 29M-1995, Television Analog Record- ing - 1-in Type B Reference Recorders - Basic System and Transport Geometry ANSVSMPTE 30M-1995, Television Analog Record- ing - 1-in Type B Reference Recorders - Records on Reference Tapes EIA 189-A, Encoded Color Bar Signal EIA
8、 Industrial Electronic Tentative Standard No. 1, Color Television Studio Picture Line Amplifier Output Drawing IEEE 205-1 958 (R1972), Method of Measurement of Television Luminance Signal Levels NAB Standard for Magnetic Tape Recording and Reproducing (Reel-to-Reel) Copyright O 1995 by the SOCIETY O
9、F MOTION PICTURE AND TELEVISION ENGINEERS 595 W. Hartsdale Ave., White Plains, NY 10607 (91 4) 761 -1 1 O0 Approved March 5, 1993 RP 107-1995 SMPTE RP 83-1992, Specifications of Tracking Con- trol Record for l-in Type B Helical-Scan Television Analog Recording SMPTE RP 84-1 992, Reference Carrier Fr
10、equencies and Preemphasis Characteristics for 1-in Type B Helical-Scan Television Analog Recording SMPTE RP 93-1 994, Requirements for Recording American National Standard Time and Control Code for 1 -in Type B Helical-Scan Video Tape Recorders 3 General specifications 3.1 Recorder The recorder used
11、 to record this tape shall comply with ANSVSMPTE 29M. 3.7 Recorded audio flux levels The record reference level and the record flux level versus frequency shall conform to ANSVSMPTE 17M, except that the short circuit flux recorded on the tape at each frequency shall be within 10.5 dB of the level sp
12、ecified. The tolerance off 0.5 dB may be extended to f 2 dB provided that the manufacturer supplies a calibration chart with the reference tape. 3.8 Audio test calibration The calibration values in decibels furnished with the reference tape shall represent the levels to be added algebraically to the
13、 reproducer output level when the particular reference tape is reproduced. With the addition of these values, the output level of the repro- ducer will be that which would have resulted if the short circuit flux on the reference tape at a given frequency had been exactly as specified in ANSVSMPTE 17
14、M. 3.2 Dimensions of records 3.9 Audio flutter The dimensions of pertinent records making up this test tape shall conform to ANSVSMPTE 30M. 3.3 Tape stock The unweighted flutter of this recording shall not exceed 0.1% RMS, measured in accordance with NAB Standard on Magnetic Tape Recording and Repro
15、ducing (Reel-to-Reel). The tape stock shall be as specified in ANSVSMPTE 26M. 3.4 Tracking control signal The tracking control signal shall conform to SMPTE RP 83 and ANSVSMPTE 30M. 3.5 Recorded video parameters The recorded video parameters shall conform to those specified in SMPTE RP 84, except th
16、at the tolerances in table 1 are tightened to f 0.025 MHz and the nominal values in other sections shall be held as close as possible. 4 Recorded signals 4.1 Voice announcements Voice announcements at the beginning of this tape shall reference this practice. Voice announcements shall be recorded at
17、a level approximately 5 dB below reference level. These announcements shall be recorded on audio 1 record and audio 2 record. A video identification signal may be included during the voice announcement section. If no video identification signal is used, sync, burst, and setup or test signal shall be
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