HP E1429B VXI 20 MSa/s 12 bit Digitizer with Local Bus

Ideally suited for transient signals, the HP E1429B’s arm/trigger circuits can be programmed to wait for the transient to occur. Up to 128 pre- and post-arm data sets can be stored in its segmentable memory. If power is lost, the HP E1429B keeps the data intact in its non-volatile memory. Both message- and some register-based programming is supported by the HP E1429B.

SCPI commands are used to program at a high level. Register-based reads and writes are supported for high-speed data-only access. An on-board voltage reference is used to verify that the HP E1429B is operational. Attenuators, amplifiers, A/Ds, memory, timebase, and digital circuits are tested upon power-up and upon receipt of the *TST command. The normal path for retrieving data is the VXI data transfer bus. An alternate higher-speed data path over the VXI Local Bus is available on the HP E1429B.

• 0.05 Sa/s to 20 MSa/s sample rate, 12-bit resolution
• 2 channels of 512 kSa/channel, segmentable memory
• Built-in test D Local Bus capability
• Message-/register-based programming supported
• VXIplug&play frameworks are supported per the Instrument Drivers information listed below

Note: Configuration software that allows you to easily select compatible interfaces, controller platforms, and VXI test system components is available on CD ROM. Order the "Test System and VXI Products Catalog and CD ROM" from the Test & Measurement Catalogs available on this web site.

General
Number of channels:   2
Built-in DSP:         No
Alias protection:     Oversample
Basic accuracy:       0.5%
Low-Frequency CMRR:   68 dB
Variable bandwidth:   External Filters
2 dB Input Range
headroom:             No
Dual-Ported memory:   No
Dual-Rate sampling:   Yes
Sampling
Number of digitized bits: 12, including sign
Effective bits: 10 bits at 100 kHz; 9.5 bits at 10 MHz
        (typical on 1 V range, 50 ohm input, full scale input)
Sample rates: 0.05 to 20 MSa/s in 1-2-5 sequence
Dual sample rate: switches between programmed rates upon receipt of arm
Memory
Memory length: 512 k readings per channel, battery-backed

Input
Input impedance: 50 or 75 ohm single-ended and 1 Mohm||20 pF differential
        (both inputs on each channel, DC coupled, nominal)
Signal ranges: 50/75 ohm: 0.1 V to 1 V; 1 M ohm: 0.1 V to 100 V in 1-2-5 steps
Analog bandwidth: 50 MHz @ 1 V single-ended, 5 MHz @ 10 V differential, typical
Filtering: 10 MHz nominal, 2-pole Bessel, switchable
Signal to noise ratio: -62 dB typical

Timebase
Internal reference: 20 MHz, M-150 ppm, <25 ps rms jitter typical
Reference sources: internal crystal, faceplate BNC, CLK 10, and ECLTRG
Timebase resolution:  50 ns

Arm and Trigger
(Each trigger event causes one A/D conversion in both channels; each Arm event allows
acquisition of a burst of one or more dual-channel A/D conversions)
Programmable arm delay: 50 ns to 32 ms using internal 20 MHz reference
        (derived from reference)
Readings per arm: 1, 7 to 16,777,215, or continuous post-arm; 0 or 3 to 65,535 pre-arm
Re-arm rate: up to 2 MHz (non-segmented memory)
Arm sources: internal, faceplate BNC, input voltage level, TTLTRG, ECLTRG, and logical OR
        of any two signals
Trigger (sample clock) sources: internal, VME read, faceplate BNC, TTLTRG, and ECLTRG
ECLTRG functions: arm, trigger, and reference (input and output)
TTLTRG functions: trigger and arm (input) arm and ready for trigger (output)

Connectors
EXT1 faceplate BNC: arm and trigger (input) arm, trigger and reference (output)
EXT2 faceplate BNC:trigger and reference (input)

VXIbus Compliance
Data paths: VXI word serial protocol on VXI data transfer bus, VME register access
        (16- or 32-bit; up to 4 or 8 MB/s) or VXI Local Bus (8-bit; up to 80 MB/s)
Device type: message-based servant and register-based (A24) slave; A16/A24, D8/D16, D32
        (data read only)
Local bus usage: high-speed data transfers; source or pass through from LBUSA to LBUSC

VXI Characteristics

VXI device type:        Message-based
Data transfer bus:      A24 slave; A16/A24, D8/D16, D32 data read only
Size:                   C
Slots:                  1
Connectors:             P1/P2
Shared memory:          n/a
VXI busses:             Local Bus A-row (left), Local Bus C-row (right),
                        TTL Trigger Bus, ECL Trigger Bus
C-size compatibility:   Yes

Instrument Drivers

Command module
 firmware:               n/a 
Command module 
 firmware rev:           n/a
I-SCPI Win 3.1:          n/a
I-SCPI Series 700:       n/a
C-SCPI LynxOS:           n/a
C-SCPI Series 700:       n/a
HP VEE Drivers:          Yes
VXIplug&play Win 
Framework:               Yes
VXIplug&play Win95/NT 
Framework:Yes
VXIplug&play HP-UX 
Framework:               No (not available at time of publication)

Module Current

            IPM       IDM 
+5 V:       3.1       0.5
+12 V:      0.2       0.04
-12 V:      0.2       0.04
+24 V:      0.1       0.05
-24 V:      0.1       0.05
-5.2 V:     4.1       0.05
-2 V:       1.3       0.12

Watt/slot:  41.50
deltaP mm H2O:  0.80
Air flow liter/s:  3.80

HP E1429B	20 MSa/s, 12-bit digitizer w/ local bus
   Opt W01	3-yr. return to HP to 1-yr. on-site warranty

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