Miranda picoLink Series Instruction Manual

DAC-191p
Video DAC
Guide to Installation
and Operation
M824-9800-100
Copyright 2007
Miranda Technologies Inc.
Specifications may be subject to change.
Printed in Canada
March 2007
DAC-191p
picoLink Series
Miranda
Technologies inc.
3499 Douglas-B.-Floreani
St-Laurent, Québec, Canada H4S 1Y6
Tel. [phone]
Fax. [phone]
www.miranda.com

Guide to Installation and Operation
DAC-191p
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
DAC-191p
CONTENTS
page
1.0 DAC-191p.............................................. 1
1.1 Introduction....................................................1
1.2 Features........................................................1
2.0 Physical Layout.....................................2
3.0 Installation.............................................3
3.1 Power Supply................................................3
3.2 4:2:2 Input ...................................................4
3.3 CAV Outputs .................................................4
4.0 Operation...............................................5
4.1 Switch Settings..............................................5
4.2 Status LED....................................................6
5.0 Specifications........................................7

Guide to Installation and Operation
DAC-191p

Guide to Installation and Operation
DAC-191p | 1
1.0 DAC-191p
1.1 Introduction
The DAC-191p is the industry’s smallest 4:2:2 serial
digital video to component analog video DAC. This
product automatically detects 525-line and 625-line 4:2:2
signals conforming to the SMPTE 259M-C standard and
provides BETA/EBU or GBR output signals. An internal
test pattern generator provides a color bars test signal
for both BETA/EBU and GBR outputs. In addition, this
feature-packed unit delivers ease-of-use, a simplified
design, easy installation and operation.
Figure 1: DAC-191p functional block diagram
1.2 Features
•Automatic 525-line and 625-line format input
detection
•Output standard selection: BETA/EBU or GBR with or
without setup
•Color bars generator
•Bi-color LED showing error status on input 4:2:2
signal
•Very small packaging with aluminum extruded body
Serial to
parallel DAC4:2:2 IN B/B-Y
G/Y
R/R-Y
COMPONENT OUT

Guide to Installation and Operation
2| DAC-191p
2.0 Physical Layout
Figure 2 illustrates the DAC-191p’s major parts and their
locations. The video source is connected to the 4:2:2
input BNC and the component analog output signals are
provided by the CAV outputs. 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.
.
4:2:2 input
Power connector
CAV outputs
Status LED
3-position slide switches
Figure 2: Physical layout of the DAC-191p

Guide to Installation and Operation
DAC-191p | 3
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
DAC-191p. Each power supply provides a regulated +5
VDC@750 mA power source. The DAC-191p employs a
mini XLR-3 connector for its power needs. Figure 3
provides a detailed pinout of the male connector.
13
2
(male connector-facing)
Pin 1: Shield
Pin 2: GND
Pin 3: +5 VDC
Figure 3: Power connector pinout

Guide to Installation and Operation
4| DAC-191p
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 CAV Outputs
The CAV outputs consist of green, blue, and red color
coded male BNC connectors. Male connectors are
provided so as to connect the DAC-191p directly to
monitoring equipment. Available CAV output standards
are:
•BETA/EBU
BETA/EBU operation provides Y/B-Y/R-Y
signals on the green, blue, and red BNCs
respectively (BETA = 60Hz; EBU = 50Hz.).
•GBR
The GBR format can be with or without setup.
Refer to Section 4.0 Operation in order to select the
desired output CAV standard.

Guide to Installation and Operation
DAC-191p | 5
4.0 Operation
4.1 Switch Settings
Figure 4 shows the slide switch locations and functions.
Output CAV standard (SW1)
Normal and Test (SW2)
picoLink CAV
OUT
SDI IN
Status LED
BETA GBR 7.5 GBR Normal Normal Test
DAC-191p
Miranda Technologies inc.
Made in Canada
Figure 4: DAC-191p switch settings
Output CAV standard switch (SW1)
BETA: For BETA/EBU CAV outputs, set SW1 to
this position. The Y/B-Y/R-Y outputs are
provided by the green, blue, and red
connectors respectively.
GBR 7.5: With 525-line inputs, set SW1 to this
position for GBR outputs with 7.5 IRE setup.
There is no setup for 625-line GBR outputs.
GBR: For GBR outputs with 0 IRE setup, set SW1
to this position.
Normal and test pattern switch (SW2)
Normal: For normal operation, set SW2 to this
position.
Test: Set SW2 to Test in order to enable the test
pattern generator. Make sure a valid 4:2:2

Guide to Installation and Operation
6| DAC-191p
input signal is installed. 525-line outputs
produce a 75% color bars signal whereas
625-line outputs produce a 75% color bars
with 100% white bar signal.
4.2 Status LED
The bi-colored status LED, located next to the CAV
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 DAC-191p 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 an input signal error is detected during a test
pattern selection, the status LED will remain red.

Guide to Installation and Operation
DAC-191p | 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: G/Y, B/B-Y, R/R-Y 700 mV
nominal with 280 mV sync
Return loss: > 35 dB up to 5 MHz
Connector: 3 captive cables with 75 Ωmale
BNCs
Processing performance
Signal path: 10 bits
Quantization: 12 bits
Sampling: 216 MHz (16X oversampling)
Freq. response: ±0.5 dB to 5 MHz
Processing delay: 3.9 µsec
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)