Product Summary
MODEL AURORA 14
1 MHz 12 BIT TRANSIENT RECORDER
with
FASTCAMAC Level 1 Operation
* INDEPENDENT ADC PER CHANNEL
* SIX CHANNELS PER MODULE
* 128K WORDS OF MEMORY PER CHANNEL , 512K ,1024K OPTIONAL
* SINGLE WIDTH CAMAC MODULE
* MULTIPLE MODES INCLUDING BURST AND PRE/POST TRIGGERING
* DIGITIZING RATE - 1 MHz DOWN TO DC ( SINGLE PULSE MODE )
* FASTCAMAC READS - DATA TRANSFERS OF 7.5 MEGABYTES/SEC
The Aurora 14 Transient Recorder is fully self contained analog waveform digitizer capable of simultaneous sampling of data on six separate channels all at rates up to 1 MHz. Housed in a single width CAMAC module, each channel contains a separate differential amplifier, sample/hold, 12 bit Analog to Digital Converter, and up to 1024K word memory. With a separate A to D converter per channel, no analog multiplexer is required, resulting in excellent reduction of crosstalk between channels. Overloading of one channel has a negligible effect on other channels.
The self contained nature of the Aurora 14 make it a fine independent building block for large multichannel transient recorder systems. Systems can be easily expanded or rearranged at a minimum expense. Servicing of large systems is also improved by the independent nature of this self contained transient recorder.
The Aurora 14 is provided with a variety of front panel controls and CAMAC commands to control its operation. Signals to be digitized are applied to front panel 2 pin LEMO connectors. Strap selections provide range selections for 0 to +2.5, to +5 ,to +10,+/-2.5 ,+/- 5 or +/-10 volts. The basic digitizing rate can be selected by CAMAC command to further divide the internal 1 MHz crystal oscillator or external clock. External clock rates cover the range of 1 MHz down to DC (single pulse) providing great versatility of operation. Digitizing (termed START) can be initiated by either a CAMAC command or by a front panel start input with digitizing proceeding in a manner based on the digitizing mode selected. Recording will generally continue until stopped (termed STOP) by a front panel stop input, a CAMAC stop command, memory full (termed OVERFLOW) or post-trigger counter duration.
DIGITIZING MODES.
Mode 0: Pre/Post Trigger: This mode starts digitizing on START and will digitize until OVERFLOW or STOP after a post trigger duration.
Mode 1: Cyclic Buffer: A START will initiate digitizing. Digitizing will continue without stopping at OVERFLOW until a STOP is received. A post trigger interval can be set to occur after STOP.
Mode 2: Multiple START-STOP: This mode allows multiple START-STOP digitizing sequences to be applied. After each STOP, digitizing will continue for the duration of a post trigger value. Unlike the Cyclic Buffer mode all digitizing will stop when OVERFLOW occurs.
Mode 3: Burst Mode ,Multiple START's: Upon receipt of a START, digitizing will commence and last for the duration of a programmed value. Each successive START received will duplicate recording for the same duration. Digitizing will terminate at STOP or OVERFLOW.
Mode 4: Master/Slave Mode: In this mode, one Aurora 14 is selected as a master in a mode from 0 to 3. Additional Aurora 14's are selected for Mode 4 (Slave operation). When the master is commanded to digitize, Slave modules duplicate the process.
The feature of FASTCAMAC operation has been added to the Aurora 14. The module responds to the FASTCAMAC F5 command providing Level 1 reads with data transfers every 400 nanoseconds. Transfer rates for long blocks at 7.5 megabytes per second can be achieved in the 24 bit format.
Complete DATA Sheet in pdf format
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