iSIS MiniBlox 4462A User manual

EU declaration of conformity
We certify that this apparatus conforms to the requirements of the EMC and
Low Voltage Directives. Emissions EN 55103-1, susceptibility EN 55103-2
and safety EN 60950-1 2002.
2 November 2004
Warranty
The ISIS Group warrants this unit against defects in materials and
workmanship for a period of one year from the date of shipment. At its
option, the company will repair or replace products that prove to be
defective during the warranty period, provided they are returned to the
company with advance notification and with freight prepaid. ISIS Group’s
policy states that all repairs are only conducted by an authorized
representative of the company. As a result any unauthorized repair or
attempted repair will automatically void the warranty.
When a distributor supplies the company's products, that distributor should
be approached initially if there are any warranty problems.
The company makes no other warranties, express or implied, as to the
merchantability, fitness for a particular purpose, or otherwise. The
company’s liability for any cause, including breach of contract, breach of
warranty, or negligence, with respect to products sold by it, is limited to
repair or replacement by the company, at its sole discretion. This remedy is
exclusive. In no event shall the company be liable for any incidental or
consequential damages, including loss of profits.
The ISIS Group P.O. Box 7 Nevada City, CA 95959
Phone: [phone] Fax: [phone]
Internet: www.isis-group.com Email: [email protected]
MiniBlox™
4462A SDI analog audio de-embedder
Extracts two balanced analog audio pairs from any group
within a 270Mb/s 525/625 SDI signal
User Manual
Latest information available at:
www.isis-group.com
www.miniblox.com

Specifications
SDI input
Standards SMPTE 259M 270Mb/s 525/625 SDI
Connector 75ΩBNC
Signal level 800mV p-p ±10% (terminated)
Return loss >15dB 5 - 270MHz
Cable equalization Up to 150m automatic (Belden 8281)
SDI output
Standards SMPTE 259M 270Mb/s 525/625 SDI
Connector 75ΩBNC
Signal level 800mV p-p ±10% (terminated)
DC offset ±100mV
Return loss >18dB clock frequency
Analog output
Standard Balanced analog pair
Number 2 stereo pairs
Impedance 50Ω
Connector Removable screw terminals
Level Max 0dBFS = +26dBu
Frequency response 20Hz to 20KHz
Audio de-embedding
Standard SMPTE 272M
Resolution 20 or 24 bit
Power
Voltage 6-12V DC
Current 400mA
Power connector Locking 2.5mm jack connector (center +v)
Other
LEDs Show signal presence & group status
Temperature range 0˚C to 45˚C
Dimensions 3 ¼” x 2 ½” x 1 1/8” (excluding connectors)
Weight 9oz
We reserve the right to change technical specifications without prior notice.

To set the analog output level:
•Activate switch 6 and once it has been on for more than six
seconds, the unit will enter the custom level select mode. This can
be verified by all four group LEDs on the front of the unit flashing.
•Switch 1-5 will now set the expected analog output level as per the
table below.
•To exit the custom level select mode deactivate switch 6. The
values on switches 1-5 will be stored in memory. It will be
necessary to reset switches 1-5 to the desired settings for normal
use.
Switch 1 Switch2 Switch3 Switch 4 Switch 5 Level
0 0 0 0 0 12dBu
1 0 0 0 0 13dBu
1 0 0 0 1 14dBu
1 0 0 1 0 15dBu
1 0 0 1 1 16dBu
1 0 1 0 0 17dBu
1 0 1 0 1 18dBu
1 0 1 1 0 19dBu
1 0 1 1 1 20dBu
1 1 0 0 0 21dBu
1 1 0 0 1 22dBu
1 1 0 1 0 23dBu
1 1 0 1 1 24dBu
1 1 1 0 0 25dBu
1 1 1 0 1 26dBu
1 1 1 1 0 27dBu
1 1 1 1 1 28dBu
•If required, lower levels can be selected by calculating
the appropriate binary number based on the above table.
MiniBlox™ - solutions in a box
General description
The 4462A SDI analog audio de-embedder extracts two balanced stereo
audio pairs from any group in the ancillary data space of a 270Mb SDI
stream. Analog outputs are converted by a 24 bit DAC (sampled at 20 or 24
bits dependant on embedded audio format). De-embedding conforms to
SMPTE 272M and allows audio to be extracted from any of the four groups.
Analog outputs are muted when no embedded audio is present. There is
automatic input cable equalization and a re-clocked SDI output. The unit is
housed in an extremely compact and rugged aluminum case and is suitable
for both field and studio applications.
4462A Main features
•Extracts two balanced analog audio stereo pairs from any group
•High quality 24 bit audio DAC
•20 or 24 bit de-embedding
•Adjustable full scale output levels to meet all international
standards
•LEDs show group status and input signal presence
•Automatic input cable equalization up to 150m
•Re-clocked SDI output
•Extremely compact and rugged design
POWE
R
M
iniBlox
™
4462A SDI analog ue audio
de-embedder
www.miniblox .com
SDI 270Mb/s
SDI 270Mb/s
S
+
-
A LEFT
S
+
-
A RIGHT
S
+
-
B LEFT
S
+
-
B RIGHT
SIGNAL
GROUP 1
GROUP 2
GROUP 3
GROUP 4
LEDs

Functional block diagram
Installation and operation
The 4462A is simple to use and install.
•Set the dipswitches by referring to the table and description below
or the table on the rear of the unit.
•Connect a valid 270Mb/s SDI input.
•Connect SDI and analog outputs.
•Apply power to the 4462A unit either via the locking power
connector from the 4000 external power supply or by sliding into
the 1 RU or 2RU rack mounting frame with central power supplies.
An alternative power source can used to power the unit as long as
the input power is within the range stated in the specifications.
•On power-up the 4462A will perform a short (3 second) self-test.
The group LEDs will flash while this is in progress.
•The signal LED will be green when there is power and a valid
270Mb/s SDI signal present or red when there is power but no SDI
signal.
•One of the group LEDs will light corresponding to the group
selected by the switches. This LED will be green if the unit is
receiving a valid video signal and successfully de-embedding audio
from the selected group. The LED will otherwise be red.
•The switch settings can be altered while the unit is powered and the
changes are implemented immediately.
•The 4-800MB mounting bracket can be used to install a MiniBlox
unit. The bracket should first be fixed vertically to any surface. The
MiniBlox can then be lowered onto the dovetail part of the bracket
with the front endplate uppermost to retain it.
Switch settings
Switch 1 2 Switch OFF ON
Group 1 OFF OFF 3 18DBu 24DBu
Group 2 OFF ON 4* Custom level
Group 3 ON OFF 5 625 lines 525 lines
Group 4 ON ON 6 Set custom level
*Disables switch 3 and allows custom levels to be set
•Switches 1 & 2 set the group from which audio packets are to be
extracted.
•Switch 3 selects between analog output levels of 18DBu and
24DBu (when switch 4 is in the OFF position)
•Switch 4 over-rides the switch 3 setting and selects the custom
level. This is 20DBu on delivery but can be altered (see below).
•Switch 5 sets the video standard. For correct operation of the unit
this must match the format of the SDI signal.
•Switch 6 is used to set custom analog output levels. If switch 6 is
left on for more than six seconds the unit will enter custom level
select mode – all group LEDs will flash red while the unit is in this
mode. Refer to the next section for selecting custom levels.
Custom level select mode
To meet all international analog audio full scale output levels the 4462A has
a custom analog output level select mode. In this mode it is possible to
select any output level between 12DBu and 26DBu in 0.5DBu increments.
The default value of the custom level on delivery is 20DBu. Once the value
of the custom level is altered it will remain stored in memory until changed
again.
Serializer
10
Input
equalization
and re-
clocking
Deserializer Output
Drivers
10
Embedded
Audio
DEMUX
LEDs
Control
Switches
Micro-
controller
24 bit DAC Analog
Outputs
SDI
Input
SDI
Output