Miranda picoLink Series Instruction Manual

Guide to Installation and Operation
-SDM-272p
ii
Radio Frequency Interference and Immunity
This unit generates, uses, and can radiate radio frequency
energy. If the unit is not properly installed and used in
accordance with this guide, it may cause interference with radio
communications. Operation with non-certified peripheral devices
is likely to result in interference with radio and television
reception. This equipment has been tested and complies with
the limits in accordance with the specifications in:
FCC Part 15, Subpart B
CE EN50081-1:1992
CE EN50082-1:1992.
CONTACT MIRANDA
For technical assistance, please contact the Miranda Technical
Support centre nearest you:
Americas
Telephone:
[phone]
e-mail:
[email protected]
Asia
Telephone:
[phone]
e-mail:
[email protected]
Europe, Middle East, Africa, UK
Telephone:
[phone]
e-mail:
[email protected]
France (only)
Telephone:
[phone]
e-mail:
[email protected]
Visit our web site at www.miranda.com

Guide to Installation and Operation
SDM-272p -iii
CONTENTS
page
1.0 SDM-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 4:2:2 Input ……..…………….................... 4
3.3 S-Video Output ………..….……............... 4
4.0 Operation ............................................ 5
4.1 Switch Settings ....................................... 5
4.2 Status LED ………………………............... 6
5.0 Specifications ................………..……. 7

Guide to Installation and Operation
-SDM-272p
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Guide to Installation and Operation
SDM-272p -1
1.0 SDM-272p
1.1 Introduction
The SDM-272p is the industry’s smallest S-video encoder. This
product automatically detects 525-line and 625-line 4:2:2 signals
conforming to the SMPTE 259M-Cstandard and provides a
NTSC, PAL, PAL-M, or PAL-N S-video output signal. An internal
test pattern generator provides a color bars test signal.This
feature-packed unit delivers ease-of-use, a simplified design,
easy installation and operation.
Figure 1: SDM-272p functional block diagram
1.2 Features
•Automatic 525-line and 625-line format input detection
•NTSC or PAL-M S-video output for 525-line input and PAL or
PAL-N S-video output for 625-line input
•Y-only (monochrome)output selection
•Output setup selection: 7.5 or 0 IRE
•Color barsgenerator
•Bi-color LED providing error status on input composite signal
•Very small packaging aluminum extruded body
Serial to
parallel
4:2:2 IN S-VIDEO
OUT
Encoder

Guide to Installation and Operation
-SDM-272p
2
2.0 Overall View
Figure 2 illustrates the SDM-272p’s major parts and their
locations. The video source is connected to the 4:2:2 input BNC
and the encoded signal is provided by the S-video 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.
Figure 2: Overall view of the SDM-272p
4:2:2 input
Power connector
S-video output
Status LED
3-position slide switches

Guide to Installation and Operation
SDM-272p -3
3.0 Installation
3.1 Power Supply
The power supplies LKS-WSA and LKS-WSE, for 110 V and 220
Voperation respectively, are used to power the SDM-272p.
Each power supply provides a regulated +5 VDC@750 mA
power source. The SDM-272p employs a mini XLR-3 connector
for its power needs. Figure 3 provides a detailed pinout of the
male connector.
1 3
2
(male connector-facing)
Pin 1: Shield
Pin 2: GND
Pin 3: +5 VDC
Figure 3: Power connector pinout

Guide to Installation and Operation
-SDM-272p
4
3.2 4:2:2 Input
Connect a 4:2:2 serial digital signal to the BNC labeled 4:2:2 IN.
The 4:2:2 input signal must conform to the SMPTE 259M-C
standard.
3.3 S-Video Output
A S-video signal conforming to the SMPTE 170M or ITU (CCIR)
624-4 standard is provided by the S-VIDEO OUTPUT connector.
Figure 4 provides the S-video connector pinout.
Figure 4: S-video connector pinout
1
3
2
(male connector-facing)
Pin 1: Luma
Pin 2: Croma
Pin 3: Luma ground
Pin 4: Chroma ground
4

Guide to Installation and Operation
SDM-272p -5
4.0 Operation
4.1 Switch Settings
Figure 5outlines the slide switch functions.
Figure 5: SDM-272p switch settings
Output setup and format switch (SW1)
7.5 IRE: To add a 7.5 IRE setup to the output NTSC S-video
signal, set SW2 to this position. There is no setup
for PAL, PAL-M, and PAL-N output signals.
0 IRE: For no setup on the output S-video signal, set SW1
to this position.
Alt. Out:To enable PAL-M and PAL-N outputs during 525-line
and 625-line input formats respectively, set SW1to
this position. Refer to Table 1 for the output format
provided during this setting.
4:2:2 input Output
SW1=7.5 IRE
or 0 IRE SW1=Alt. Out
525-linesNTSC PAL-M
625-lines PAL PAL-N
Table 1: Output format conversion
7.5 IRE 0 IRE Alt. Out Normal Y-Only Test
SDM-272p
Miranda Technologies inc.
Made in Canada
Output setup and format (SW1)
Normal, Y-only, and test (SW2)

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-SDM-272p
6
Normal, Y-only, and test pattern switch (SW2)
Normal:For normal operation, set SW2to this position.
Y-Only:Setting SW2to this position providesa monochrome
output signal by forcing the output chroma to 0.
Test: Set SW2to Test in order to enable the test pattern
generator. Make sure a valid 4:2:2 input signal is
installed. NTSC and PAL-Moutputs produce a 75%
color barssignal whereas PAL and PAL-Noutputs
produce a 75% color barswith 100% white bar
signal.
4.2 Status LED
The bi-colored status LED, located next to the S-video output
cable, is provided to identify any input errors and the selection of
the test pattern. The following lists all possible situations.
Green: Indicates the SDM-272p is powered and has
detected a valid 4:2:2 serial digital signal.
Red: Indicates an error with the input signal has been
detected or simply, there is no input signal installed.
Yellow: The test pattern is selected.
If, during a test pattern selection, an error is detected with
the input signal, the status LED will remain red.

Guide to Installation and Operation
SDM-272p -7
5.0 Specifications
Input
Signal: 4:2:2 SMPTE 259M-C (270 Mbps)
Cable length:250 m (850')
Return loss: > 15 dB up to 270 MHz
Connector :75 ΩBNC
Output
Signal: S-video 1Vpp nominalwith sync
Return loss: > 35 dB up to 5 MHz
Connector :Cable with male mini-Din 4
Processing performance
Signal path: 8 bits
Quantization: 10 bits
Sampling:27 MHz (2X oversampling)
Freq. response: ±0.5 dB to 5MHz
Processing delay: 1.5 us
Electrical
Voltage requirement: +5 VDC
Power consumption: 3W
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)