HP E1429A VXI 20 MSa/s Digitizer

Ideally suited for transient signals, the HP E1429A’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 E1429A keeps the data intact in its non-volatile memory. Both message- and some register-based programming is supported by the HP E1429A.

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 E1429A 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 retreiving data is the VXI data transfer bus.

• 0.05 Sa/s to 20 MSa/s sample rate, 12-bit resolution
• 2 channels of 512 kSa/channel, segmentable memory
• Analysis capability with the HP E1485A DSP
• Built-in test
• 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 
Segmented memory:  yes



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 is 0.1 V to 1 V; 1 M ohm is 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, þ50 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 or VME register access 
        (16- or 32-bit; up to 4 or 8 MB/s)
Device type: message-based servant and register-based (A24) slave; A16/A24, D8/D16, D32 
        (data read only)
VXI Characteristics
VXI device type:Message-based
Datatransfer bus:       A24 slave; A16/A24, D8/D16, D32 data read only
Size:                   C
Slots:                  1
Connectors:             P1/P2
Shared memory:          n/a
VXI busses:             TTL Trigger Bus, ECL Trigger Bus
C-size compatibility:   Yes
Instrument Drivers
Click here for driver 
availability and downloading.
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 attimeofpublication)


Module Current
            IPM       IDM 
+5 V:       2.9       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:     3.6       0.05
-2 V:       1.2       0.12



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

Backplane Connector Shielding
To ensure compliance with RFI levels specified in standards EN55001 and
CISPR11, this product requires the Backplane Connector Shields installed
in an HP VXI C-size mainframe.  Option 918 is available with the
purchase of a new HP mainframe; accessories, HP P/Ns E1400-80920 and
E1421-80920, are available for retrofitting existing HP mainframes HP
E1401A/B and HP E1421B, respectively (one accessory per mainframe
required).

HP E1429A	VXI 20 MSa/s Digitizer
   Opt 0B3	Service manual
   Opt W01	3-yr. return to HP to 1-yr. on-site warranty

HP E1400-80920	Shield, backplane connector
HP E1421-80920  VXI backplane connector shield kit