DTL Broadcast MiniBlox 4261D 3G-HD-SD User manual

Specification
Video input
3G
SMPTE 424M & 425M
-
AB (2.97 &
2.967Gb/s)
1080p50/59.94/60
HD
SMPTE 292M (1.485 & 1.435Gb/s)
1080i 60/59.94/50
1080p/psf 30/29.97/25/24/23.98
720p 60/59.94/50/30/29.97/25/24/23.98
SD
SMPTE 259M
-
C (270Mb/s)
625i 50
525i 59.94
Number
1
Connector
75
Ω BNC
Return loss
>15dB to 1.485GHz
>10dB 1.5 to 2.97GHz
Cable
equalisation
3G 140m, HD 230m, SD 250m
(Belden 1694A)
Video outputs
Standards
As input
Format
As input
Number
2
Connectors
75
Ω BNCs
Jitter
<0.20ui peak
-
to
-
peak
Return loss
>15dB to 1.485GHz
>10dB 1.5 to 2.97GHz
E
mbedding
Standards
SMPTE 299M & 272M
-
C
Audio
inputs
Inputs
Balanced
AES
Numb
er
4
Connector
Female 15pin sub
-
D (optional XLR
breakout cable)
Type
Transformer coupled
Sample rate
32
-
96
kHz
Sample rate
conversion
AES converted to 48kHz
synchronous with video (selected by
dipswitch)
Standard
AES3
Impedance
110
Ω
Input
level
3.
5v p
-
p ±5%
Breakout cable
(optional)
4
fe
male XLRs
Electrical
Voltage
6
-
12VDC
Power
<3
W
Connector
Locking 2.5mm jack (centre +ve)
Safety
EN60950
Control
Setup
6 way dipswitch
LEDs
Power, input presence & group status
Other
Size (mm)
6
3.5 x 84 x 30 plus connectors
Weight
175
g
Temperature
5
˚C to 40˚C
Humidity
80% max (non condensing)
Options
5CA15SD
-
X0
5
Audio cable HDD15 to
4F
XLRs
4006
Desktop power supply with IEC inlet
NADITBNC
-
F
Female XLR to BNC adaptor for
unbalanced AES input
4010
1U rack mounting frame for up to 5
units including PSU
4020
2U rack mounting frame for up to 14
units & single or dual PSUs
4021
Power supply for 4020 2U frame
DTL Broadcast Ltd, Johnson’s Estate, Silverdale Road, Hayes, Middlesex, UB3 3BA, UK
Phone: [phone] Fax: [phone]
Internet: www.dtl-broadcast.com [e-mail]
UG-4261D Iss1.0
DTL MiniBlox™
User Guide
4261D 3G-HD-SD quad AES audio
embedder
Inserts four balanced AES digital audio streams into any two
groups within an SDI signal
www.miniblox.com

- 2 - - 7 -
EU declaration of conformity
We certify that this apparatus conforms to the requirements of the EMC and
Low Voltage Directives. Emissions EN55103-1, susceptibility EN55103-2 and
safety EN60950-1 2002.
10 February 2009
Warranty
DTL Broadcast Ltd 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. Repairs may only be conducted by an
authorised representative of the company. As a result any unauthorised 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.

- 6 -
Audio inputs
When used with the optional XLR breakout cable inputs are as shown below..
XLR Input
IN A1 First group selected - Pair 1
IN A2 First group selected - Pair 2
IN A3 Second group selected - Pair 1
IN A4 Second group selected - Pair 2
The pin out of the 15 way sub-D connector is as shown below:
Pin Input Signal
1 Second group selected - Pair 2 +
2 Second group selected - Pair 1 Screen
3 First group selected - Pair 2 +
4 First group selected - Pair 1 Screen
5 Not used NA
6 Second group selected - Pair 2 -
7 Second group selected - Pair 1 +
8 First group selected - Pair 2 -
9 First group selected - Pair 1 +
10 Not used NA
11 Second group selected - Pair 2 Screen
12 Second group selected - Pair 1 -
13 First group selected - Pair 2 Screen
14 First group selected - Pair 1 -
15 Not used NA
15 way sub-D connector viewed
looking in to pins of plug
- 3 -
SDI OUT 1
SDI OUT 2
AES AUDIO 1
AES AUDIO 2
AES AUDIO 3
AES AUDIO 4
EQUALISATION
& RE-CLOCKING SERIALISER
OUTPUT
DRIVER
DESERIALISER
SDI
SDI
INSERT
EMBEDDED
AUDIO
MICRO
CONTROLLER
LOCAL
CONTROL
SWITCH
DISPLAY
LED
SAMPLE
RATE
CONTROL
SDI
DTL MiniBlox™ - solutions in a box
General description
The 4261D 3G-HD-SD quad AES audio embedder inserts four balanced AES
audio streams (8 audio channels) into the ancillary data space of an SDI signal.
Audio can be inserted into any two embedded audio groups. AES inputs can be
sample rate converted to a 48kHz rate synchronised to the video. Conversion
may be bypassed for compatibility with Dolby® streams. Two units can be
cascaded to enable embedding into all four available groups (16 audio
channels).
The unit automatically detects whether the SDI input is 3G, HD or 270Mb/s SD
SDI. There is automatic input cable equalisation and two re-clocked SDI
outputs are provided.
The unit requires an external power supply or a rack mounting frame. A 1RU
frame is available which takes up to 5 units and a 2U one that takes up to 14.
XLR audio breakout cables and external power supplies are also available.
Key features
Automatic 3G, HD, or SD SDI standard detection
Inserts four balanced AES audio streams into any two groups
Internal sample rate converters for 48kHz AES synchronous with video
input
LEDs show group status and input signal presence
Automatic input cable equalisation
2 re-clocked SDI outputs
Compact and rugged design
Optional XLR breakout cable
Optional external power supply
Optional rack mounting frames with central power supplies
Functional block diagram

- 4 -
Installation and operation
The unit 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 breakout cable (when this option has been ordered).
Connect a valid SDI input and AES inputs. See the audio input section on
the page 6 for connecting to the AES breakout cable or to a 15-pin male
sub-D connector (not supplied).
AES inputs may be synchronous or asynchronous, and of any sample rate
up to 96kHz. Alternatively if the sample rate converters are bypassed they
must be 48kHz and synchronous to the video input.
Connect SDI outputs (if required).
Apply power to the unit either via the locking power connector from the
external power supply or 1U rack frame, or by sliding into the 2U rack
mounting frame with central power supplies.
On power-up the unit 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 SDI signal
present or red when there is power but no SDI signal.
Two group LEDs will light corresponding to the groups selected by the
dipswitches (default on delivery groups 1&2). The LED will be green if
the unit is receiving a valid video signal and successfully embedding
audio from that group. The LED will otherwise be red. Orange LEDs
indicate which groups are already present in the SDI stream.
The switch settings can be altered whilst the unit is powered and the
changes are implemented immediately. Switch 1 is used to toggle through
all possible pairs of groups into which to insert audio.
The mounting bracket supplied can be used to install the 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
OFF ON
1
Toggle audio group A
2
Toggle audio group B
3
Cascade Overwrite
4
24-bit SD 20-bit SD
5
DS1 DS2
6
SRC on SRC bypass
Switches 1& 2 are used to select the two groups into which the audio samples
are inserted. Toggling switch 1 or 2 will cycle through all possible groups with
- 5 -
the group selected shown on the LEDs. The group settings are stored in
EEPROM and are therefore retained even after the unit has been powered down.
Switch 3 determines whether existing audio packets are deleted from the video
signal. When the switch is off, new audio packets are appended without deletion
of existing packets allowing two units to be connected in cascade.
Switch 4 controls the bit depth of the embedded audio for SD SDI only (audio
depth is always 24 bit in 3G & HD). When the switch is off, extended audio
packets are multiplexed into the video signal (24 bit audio). When the switch is
on, extended audio packets are not included (20 bit audio).
Switch 5 selects between embedding on data stream one or two when
embedding to a 3G Level B signal.
Switch 6 is used to bypass the sample rate conversion.