Wideband Digital Recorder - EWAS Technologies

Acquisition of 70MHz , bandwidth ± 20MHz ( in phased manner) .

Digitize and record the complex data.

Dynamic range is 70 dB. Recording range is 0dBm to -70dBm.

	Extensive recording duration of four hours at 40MHz bandwidth.
	Analog Replay of the recorded signal at 70MHz IF.
	Digital Replay FFT of the recorded signal displayed on remote controller.
	Output signal level is 0 dBm to -70dBm.
	Transfer the recoded data to any remote PC through LAN.
	Adaptive sample rate selection with bandwidth opted.
	Auto file-name generation with task details and time stamp.
	Text annotation with the recording file.
	Time sync with IRIG-B Time code.
	Over write facility when recording media is filled up.
	Loop back facility.
	Remote controllability.
	Backup facility and Deletion of selected file/files.

Wide Band Digital Recorder performs Recording and Replay of the intercepted signals at 70MHz IF with maximum bandwidth of ±20MHz. Recorded Data is stored in Solid State Disks housed in Rugged Disk Crate. WBDR system is built with 3U VPX COTS modules in 19” Rack mountable chassis. System is controlled though Gigabit Ethernet LAN. Replay feature of WBDR enables analog reconstruction of the recorded signal back to the 70MHz IF. System is made user friendly by providing sophisticated remote controllability.

Mechanical Specifications

Size & Weight	19” wide mountable rack & 20 Kg, maximum
Temperature	0 to + 50°C with Air-cooled enclosure
Power Input	230 V AC with Built-in power supply converter.

System Specifications

Number of Channels	One 70 MHz IF channel (With IF In and IF Out)One 10 Gigabit Ethernet for time stamping and indexing
Channel Bandwidths for record / replay	40, 20,10, 5, 2.5, 1.25 and 0.625 MHz, Selectable
Filter for selected BW	Optimized (internal) anti-alias filters
Record Duration	Four hours minimum for 40 MHz signal BW.
Digital Recording / Replay Technology	Digital conversion recording and replay.
Data Storage Media	COTS Solid State housed in rugged Disk Crate
Recording Format	Stored on disk in a continuous I/Q format
Data Back-up / transfer / archiving	To any remote machine over LAN.
Input/Output Impedance	50 Ohms
Input Level	-70 to +0 dBm in 1 dBm steps for full-scale recording
Output Level	0 dBm into 50 Ohms (from full-scale recording)
Frequency Response	± 1.5 dB across selected bandwidth
Spurious free dynamic range	> 60 dBc
Reference Frequency	Sampling shall be locked to a stable internalreference frequency or to an external source,
Spurious free dynamic range	> 60 dBc
Signal Monitoring	Spectrum monitoring of the recording signal shouldbe displayed on the Remote Controller System
IRIG-B Time code	Separate additional record / playback channel shallbe provided for IRIG-B time code. Automaticsynchronization to external reference is essential
Remote Control	via 10 / 100 Base-T Ethernet
Record looping	The recorder to simulate a continuous endless looprecorder. Overwriting of redundant data commencesonce the max. capacity of the disk array hasreached. The recording to completely transparent .
Reproduce looping	Configure the recorder to play back selected passages of recorded data in an endless loop.
Software Utility	Windows GUI for remote control and data extraction.