Digitising Receiver (DR068)

TELEDYNE
DEFENCE LIMITED
Digitising Receiver
Technical Data DR068
A Teledyne Technologies Company
Features
Broadband operation : 2-18 GHz
15-BIT output (0.5 MHz Resolution)
Pulse Amplitude, Pulse Width and TOA
50 MHz Clocking rate
60 dB Dynamic range
‘VME64’ Form Factor
Applications
Electronic Support Measures
Radar Warning Receivers
ECM Set-On
Airborne, Fixed Wing & Rotary
Land
Naval
Product Description
The DR068 latest Digitising Receiver builds on the strong tradition of TDL Digital Frequency Discriminators (DFD’s).
The DR068 takes key performance elements from a number of existing production DFD’s, integrating them for the
first time into a complete digital solution suitable for military environments.
The DR068 offers the benefits of TDL’s field-proven proprietary SSS discriminator tiers coupled with the latest digital
technology to produce a receiver that not only measures frequency but is capable of Digital Signal Processing (DSP)
of the raw frequency data.
DSP capability, is incorporated as standard; however, due to the use of state-of-the-art FPGA technology, TDL is
able to adapt and add to the DSP capability to offer a DFD that is suitable for the majority of systems.In addition to
measuring frequency, the DR068 also measures pulse parameters such as time of arrival (TOA), pulse width (PW) and
pulse amplitude.
POP and FMOP options available on request.
Data is output as a 96 bit Pulse Descriptor Word (PDW) as three 32 bit words via the industry standard Front Panel
Data Port (FPDP) connector. An optional 51 Way MDM interface is available.
The DFD is packaged in an industry standard dual slot (8HP) width plug-in format with DIN41612 interface for VME
bus applications, suitable for most modern day EW suite equipment racks.
Global Defence &
Security Solutions
DR068 rev 1.2
23 Aug 2007
Page 1 of 7
© Teledyne Defence Ltd, 2008. All rights reserved.
Teledyne Defence Ltd
Airedale House
Royal London Industrial Estate
Acorn Park, Charlestown
Shipley, West Yorkshire
UK, BD17 7SW
Tel: +44 (0) 1274 531 602
Fax:+44 (0) 1274 595 724
Email: sales@fcl.com
Web: www.teledyne.com
TELEDYNE
DEFENCE LIMITED
Digitising Receiver
Technical Data DR068
A Teledyne Technologies Company
Electrical Specification
Parameter
Units
Min
Value
Nom
Max
1
Operating Frequency Range
GHz
2.0
18.0
2
Operating + Guard Band
GHz
1.98
18.02
3
Unambiguous Frequency Range
GHz
1.98
18.02
4
Frequency Resolution MHz
0.5 MHz
5
Digital Frequency Resolution
Bits
15
6
Frequency Error (RMS) MHz
3.0
7
Frequency Peak Error MHz
16
8
Peak Error Rate
%
0.04
9
Frequency and Amplitude Measurement
Dynamic Range
dBm
-55
10
10
Typical POI at –50dBm
>99%
11
External noise input
dBm
-70dBm
12
Amplitude Resolution
dBm
0.5
13
Digital Amplitude Resolution
Bits
8
14
Amplitude accuracy
dB rms
2
15
Recovery Time
ns
500
16
RF Input Pulse Width
ns
50
CW
17
RF Input VSWR
2.1:1
18
Clock Frequency (internal)
MHz
49.5
50
50.5
19
Overload Power
dBm
20
20
Data Output format
Pulse descriptor word–
frequency, amplitude, TOA, pulse
width, bad data flags
21
Interfaces
Power-VME backplane
Data Transfer-Front Panel dataport
RF input- SMA
Audio output-Audio jack
22
Temperature Range
°C
-40
85
23
Power Supply Current +12v Rail
mA
900
24
Power Supply Current +3.3v Rail
A
3.0
25
Power Supply Current
+5v Rail
A
1.0
26
Power Supply Current
-12v Rail
mA
400
27
Weight (Approx.)
kg
1.5
28
Size (Approx.)
Length
mm
175
Width (8HP)
mm
41.14
Height (6U) mm
262
29
Boot Up Time
sec
5
DR068 rev 1.2
23 Aug 2007
Page 2 of 7
TELEDYNE
DEFENCE LIMITED
Digitising Receiver
Technical Data DR068
A Teledyne Technologies Company
Block Diagram
Environmental Performance
The unit is designed to meet the environmental conditions specified below.
Temperature
Absolute operating limits: –40ºC to +85ºC (standard VME rack with forced air cooling)
Storage temperature: –5OºC to +100ºC
Thermal cycling, survival: 5 cycles to the profile shown below –
DR068 rev 1.2
23 Aug 2007
Page 3 of 7
TELEDYNE
DEFENCE LIMITED
Digitising Receiver
Technical Data DR068
A Teledyne Technologies Company
Humidity
Operational: Humidity level not exceeding 95% RH (non-condensing during operation).
Pressure
Operational range: of 0.6 to 1.4 bar.
Storage range: 0.3 to 1.4 bar.
Vibration
The unit is designed to meet the following vibration profile carried out on the worst axis: i.e. the force is
perpendicular to the components.
Acceleration
Structural survival: 6.75g in all directions.
Operational: 4.5g in all directions
Shock
Survival: Terminal peak saw-tooth pulse with a peak value of 20g and duration 11 ms.
Reliability
The unit has a target MTBF of 25,000 hours for an Airborne Inhabited environment.
Electromagnetic Compatibility
The unit is designed with regard to the requirements of MIL STD 461E. Compliance can only be satisfied by careful
design of the overall system particularly with regard to the interconnects between the DIFM and other parts of the
system. While the design will be executed with regard to the requirements of the relevant standards, TDL cannot
guarantee compliance if used inappropriately.
DR068 rev 1.2
23 Aug 2007
Page 4 of 7
TELEDYNE
DEFENCE LIMITED
Digitising Receiver
Technical Data DR068
A Teledyne Technologies Company
Connector Information
RF Input is via Front Panel sma(f) connector
Data Output via FPDP as detailed in Electrical Interface and Timing Information
DC Power via VME Backplane
Electrical Interface and Timing
The primary interface for pulse measurement information is the Front Panel Data Port. This port is designed in
accordance with VITA 17-199x Rev 1.7 (24 Nov 1998).
The general operation is as described below:
•The DR068 transmits a Pulse Descriptor Word on the FPDP every time an RF pulse is detected and measured.
•The FPDP communication is one-way, however, the receiver is able to suspend transmission of PDW’s by asserting the SUSPEND signal.
•The FPDP data word is 32-bit wide ‘frame’, a DR068 PDW is 96-bits long, therefore 3 32-bit frames are transmitted for every PDW
•The FDPD clock rate is 40MHz.
•A PDW transfer takes 5 clock cycles, therefore at 40MHz, it takes 125ns to TX a PDW.
NOTE: The DR068 has been designed and tested using a PC driven FPDP card, this card is manufactured by VMETRO
(model number DPI02-FBU)
The following table defines a format for a pulse descriptor word:
Parameter
No. of bits
Resolution
Parameter
Frequency
Amplitude
Pulse Width
Time of Arrival
Flags
No of Bits
Resolution
15
8
16
5ns
32
5ns
6
Description
Maximum Value
327.675us
21.47s
The format of the data frame will be as follows:
Word 0
Word 1
Word 2
DR068 rev 1.2
23 Aug 2007
Page 5 of 7
TOA [D31:0]
Pulsewidth [D31:16]
Flags [D31:26]
Frequency [D15:1]
Spare [D25:8]
Spare [D0]
Amplitude [D7:0]
TELEDYNE
DEFENCE LIMITED
Digitising Receiver
Technical Data DR068
A Teledyne Technologies Company
Flag data is as follows:
D31
D29 D27
Bad Data – ambiguity
Not used
CW Flag
D30
D28
D26 Bad data – threshold
Not used
Not used
Front Panel Data transfer:
Each PDW will be transferred in five front panel data port clock cycles. The DR068 is the master (transmitter) the
host system is the slave (receiver).
The diagram below shows a full transfer plus start of next transfer.
NOTE: Refer to Front Panel Data Port Specifications, VITA 17-199x, for details of operation of the transfer bus.
NOTES
1.The pulse width measurement will be derived from the output signal of the pulse detection circuit, i.e. it will not be the width of pulse at 3 dB points.
2.Pulse widths longer than the maximum specified will be flagged as CW. A PDW will be generated at the end of every 327.675us (with the CW flag set) until the pulse has been determined to have gone away.
3.The TOA counter will roll-over to zero every 21.47s.
DR068 rev 1.2
23 Aug 2007
Page 6 of 7
TELEDYNE
DEFENCE LIMITED
A Teledyne Technologies Company
DR068 rev 1.2
23 Aug 2007
Page 7 of 7
Digitising Receiver
Technical Data DR068
TELEDYNE
DEFENCE LIMITED
Digitising Receiver
Technical Data DR068
A Teledyne Technologies Company
Teledyne Defence Ltd
Airedale House
Royal London Industrial Estate
Acorn Park
Charlestown
Shipley, West Yorkshire
UK, BD17 7SW
Tel: +44 (0) 1274 531 602
Fax:+44 (0) 1274 595 724
Email: sales@fcl.com
www.teledyne.com
© Teledyne Defence Ltd, 2008. All rights reserved.