Grass Valley ASD-272p User Manual

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CONTENTS
page
1.0 ASD-272p .......................................….. 1
1.1 Introduction ………………………............. 1
1.2 Features .........................................…….. 1
2.0 Overall View ………….......................... 2
3.0 Installation .......................................... 3
3.1 Power Supply .......................................... 3
3.2 S-Video Input ……..……………............... 4
3.3 4:2:2 Output ………..……..……............... 4
4.0 Operation ............................................ 5
4.1 Switch Settings ....................................... 5
4.2 Status LED ………………………............... 6
5.0 Specifications ................………..……. 7
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Guide to Installation and Operation
1.0 ASD-272p
1.1 Introduction
The ASD-272p is the industry’s smallest S-video decoder. This product automatically detects NTSC, PAL, PAL-M, PAL-N, and SECAM S-video signals and provides a 4:2:2 serial digital signal conforming to the SMPTE 259M-C standard. The supported inputs range from stable, studio-type sources to satellite and VTR­type sources. This feature-packed unit delivers ease-of­use, a simplified design, easy installation and operation.
S-VIDEO
IN
Decoder
Parallel
to serial
Figure 1: ASD-272p functional block diagram
1.2 Features
§ Automatic input detection of NTSC, PAL, PAL-M, PAL-N, and SECAM S-video signals
§ 4:2:2 output
§ Input setup selection: 7.5 or 0 IRE
§ Input signal stability selection: VTR, Tuner
(satellite), and Studio
§ Bi-color LED providing error status on input composite signal
§ Very small packaging aluminum extruded body
4:2:2 OUT
1
ASD-272p
2.0 Overall View
Figure 2 illustrates the ASD-272p’s major parts and their locations. The video source is connected to the S-video input BNC and the decoded signal is provided by the 4:2:2 output. Error status is provided by the status LED and mode settings are configured by two 3-position slide switches. Finally, the power source is connected to the power connector.
S-video input
Status LED
Power connector
3-position slide switches
4:2:2 output
Figure 2: Overall view of the ASD-272p
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Guide to Installation and Operation
3.0 Installation
3.1 Power Supply
The power supplies LKS-WSA and LKS-WSE, for 110 V and 220 V operation respectively, are used to power the ASD-272p. Each power supply provides a regulated +5 VDC@750 mA power source. The ASD-272p employs a mini XLR-3 connector for its power needs. Figure 3 provides a detailed pinout of the male connector.
(male connector-facing)
1 3
Pin 1: Shield Pin 2: GND Pin 3: +5 VDC
2
Figure 3: Power connector pinout
3
ASD-272p
3.2 Composite Input
Connect a NTSC or PAL, PAL-M, PAL-N, SECAM S­video signal conforming to the SMPTE 170M or ITU (CCIR) 624-4 standard respectively to the BNC labeled S-VIDEO IN.
(male connector-facing)
1
3
4
Figure 4: S-video connector pinout
3.3 4:2:2 Output
The 4:2:2 serial digital output signal is provided by the BNC labeled 4:2:2 OUT. The 4:2:2 output signal conforms to the SMPTE 259M-C standard.
Pin 1: Luma
2
Pin 2: Chroma Pin 3: Luma ground Pin 4: Chroma ground
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Guide to Installation and Operation
4.0 Operation
4.1 Switch Settings
Figure 5 outlines the slide switch functions.
Miranda Technologies inc. Made in Canada
Input setup (SW1)
Input stability (SW2)
ASD-272p
7.5 IRE
0 IRE
VTR
Tuner
Studio
Figure 5: ASD-272p switch settings Input setup switch (SW1)
7.5 IRE: For S-video sources with 7.5 IRE setup, set SW1 to this position.
0 IRE: For S-video sources with 0 IRE setup, set
SW1 to this position.
Input stability switch (SW2) VTR: This position should be set for non-time
based corrected sources.
Tuner: Decoding satellite sources or sources with
unpredictable voltage levels is improved with the Tuner setting.
Studio: Set this position when using stable S-video
sources.
Note: NTSC/PAL-M Input Detection
5
ASD-272p
If switching from an NTSC source to a PAL-M source which are both synchronized, the picoLink units may interpret the PAL-M source as an NTSC source. If so, the unit will not switch to PAL-M. In order to recover from this problem, disconnect the source from the input BNC and reinstall it.
4.2 Status LED
The bi-colored status LED, located next to the S-video input cable, is provided to identify any input errors. The following lists the possible situations.
Green: Indicates the ASD-272p is powered and has
detected a valid S-video signal.
Red: Indicates an error with the input signal has
been detected or simply, there is no input signal installed.
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Guide to Installation and Operation
5.0 Specifications
Input
Signal: S-video 1 Vpp nominal with sync Return loss: > 35 dB up to 5 MHz Connector : Cable with male mini-Din 4
Output
Signal: 4:2:2 SMPTE 259M-C (270 Mbps) Return loss: > 15 dB up to 270 MHz Jitter: < 10 ns p-p Connector : 75 BNC
Processing performance
Quantization: 8 bits Freq. response: ±0.5 dB to 5 MHz Processing delay: 4.5 us
Electrical
Voltage requirement: +5 VDC Power consumption: 3 W Power connector: Mini XLR-3
Mechanical
Overall size: 102 mm x 25 mm x 18 mm (4” x 1” x 0.7”) Power cable length: 127 mm (5”)
Full spec. temp. range: 0° C (32° F) to 30° C (86° F)
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