VXI Digitizers

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Waveform digitizers capture raw time data for further processing, usually in a host computer, but sometimes in the digitizer itself. This architecture allows a much more detailed analysis of the waveform than is possible using an oscilloscope--computers can make practical use of high-resolution measurements, and post-processing possibilities are unlimited. As a result, digitizers have (compared to oscilloscopes) higher resolution, and while output may be processed, parameters are seldom extracted directly.

Compared to scanning A/Ds with high absolute accuracy at DC, digitizers are optimized for relative measurements throughout the frequency range and across channels. Because waveform digitizers convert rapidly changing (or high-frequency) signals compared to scanning A/Ds, sample rates are higher, and they usually have a separate A/D for each channel, which greatly increases the cost-per-channel. The resolution of waveform digitizers is usually less than that ofscanning A/Ds for reasons of economy and application.


This product family includes


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		HP E1432A		HP E1437A		HP E1431A		HP E1429A/B
					HP E1430A(5)		
Rate- Sa/s	16x51,200		20 M			8x65,536		2x20 M
Bits		16			23			16			12
Signal BW	23 kHz			8 MHz			8x25.6 kHz(1)		2x50 MHz(2)
Memory 		4 to 32 MBytes		4 MSa			8x16 kSa		512 kSa/ch

Arm, Trigger	Arm enables		Arm enables		Arm enables		Arm enables
		trigger state;		trigger state;		trigger state;		trigger state;
		trigger initiates	trigger initiates	trigger initiates	trigger 
		measurement		measurement		measurement		initiates
											measurement
Sources		Input Source		TTLtrg			Input Channel		TTLtrg
		External VXI		ECLtrg			Triggering		ECLtrg
		TTL TRG RPM(4)		External Level					External Level

Timebase	Alias protected		Digital Filter		Digital filter 		0.05 Hz to 
		bandwidths of		spans of 		spans of 		20M Hz; 
		10 Hz to 23 kHz,	8 MHz to		25.6 KHz to 		dual rate
		or sample rates		0.48 Hz to		0.39 Hz in 	
		of 25.6 Sa/s of 	achieve 1.2 Sa/s	2x steps. 	
		1.0 Sa/s to		to 20 MSa/s;		Corresponding 	
		51.2 k Sa/s		alias protected		65,536 Hz to 	
					regardless of 		1 Hz sample	
					sample rate		rates are alias	
								protected	
								regardless	
								of sample rate	

Signal		16 differential		1 channel; 		8 differential		2 channels; 
Conditioning	channels; 1 MOhm;	50 Ohm 8 MHz 		channels;		50 and 75 
		100 mV to 20 V		anti-alias 		1 MOhm, 10 V to		single-ended; 
		ranges; AC/DC		protected		5 mV ranges;		1 MOhm
		Coupling; ICP;		regardless of 		ICP power;		differential;
		microphone		sample rate		AC/DC coupling;		0.1 to 1 V 
		power;						programmable		single-ended; 
		programmable					digital anti-		0.1 to 100 V 
		digital anti-					alias filters;		differential
		aliasing filters; 				simultaneous		10 MHz, 2 pole
		simultaneous					sample and		Bessel filter
		sample and					hold	
		hold			
Programming	C Libraries		Register-based; 	Register-based; 	Message-based; 
					SCPI commands 		SCPI commands 		SCPI; HP VEE 
					with 			with 	
					HP E1405/6A; 		HP E1405/6A; 	
					HP VEE;			HP VEE;	
					C libraries(3)		C libraries(3)	
				
				
VXI Slots	C-1			C-1			C-1			C-1

(1) with internal anti-alias filter     (2) 1 V range single-ended input, filter off     (3) HP-UX only    
(4) Option AYF Tachometer Input required (5) The HP E1430A is a 10 MSa/s version of the HP E1437A with a 
4 MHz maximum bandwidth

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HP E1429B 20MSa/s Digitizer Technical Specifications
HP E1431A Technical Specifications
HP E1432A Technical Specifications
HP E1433A Technical Specifications
HP E1437A Technical Specifications

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HP E1429A		20 MSa/s Digitizer
HP E1429B		20 MSa/s Digitizer with Local Bus
HP E1430A		10 MSa/s Digitizer with DSP
HP E1431A		8-Channel 25.6kHz Digitizer
HP E1432A		16-Channel 51.2kSa/s Digitizer plus DSP
HP E1437A		20 MSa/s Digitizer with DSP

Refer to detailed descriptions and ordering information for these
products on pages located at this web site.


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