The Keysight (Agilent/HP) E1437A is a high-performance, single-slot, C-size VXI modular digitizer. It features 23 bits of resolution at a 20 MSa/s sampling rate, designed for advanced digital signal processing (DSP) applications such as spectral analysis, filtering, and demodulation. It includes integrated analog conditioning, an 8 MHz analog anti-alias filter, a digital local oscillator (LO), and 24 decimation filters with a large onboard FIFO memory.
Specifications
General
| Parameter | Value |
|---|---|
| Interfaces | VXIbus, VXI Local Bus, Front Panel SMB (Input, External Trigger, External Clock) |
| Warm-up Time | 30 minutes |
Physical
| Parameter | Value |
|---|---|
| Power Supply | VXI Backplane powered (+5 V, +12 V, -12 V, -5.2 V, -2 V) |
| Operating Temperature | 0 to 55 °C |
| Dimensions (W×H×D) | 262 mm × 30.5 mm × 353 mm (VXI C-size, 1-slot) |
Analog Input
| Parameter | Value |
|---|---|
| Number of Input Channels | 1 |
| Input Impedance | 50 Ω |
| Analog Bandwidth | 8 MHz |
| Input Ranges | -30 dBm to +26 dBm (in 2 dB steps) |
| Input Coupling | DC |
Analog-to-Digital Conversion (ADC)
| Parameter | Value |
|---|---|
| ADC Resolution | 14 bits |
| Maximum Sampling Rate | 20 MSa/s |
| Alias-Free Bandwidth | 8 MHz (at 20 MSa/s) |
Digital Signal Processing (DSP)
| Parameter | Value |
|---|---|
| Digital Local Oscillator (LO) Range | 0 Hz to 10 MHz |
| Digital LO Resolution | 32-bit |
| Number of Decimation Filters | 24 |
| Decimation Range | 1 to 8,388,608 (2^0 to 2^23) |
Onboard Memory
| Parameter | Value |
|---|---|
| Onboard Memory Type | FIFO |
| FIFO Memory Capacity | 2 MSamples |
Triggering & Synchronization
| Parameter | Value |
|---|---|
| Trigger Sources | Immediate, External, TTLTRG (VXI), Software, Local Bus |
| Trigger Modes | Free run, Level, External |
| External Trigger Input | Front panel SMB |
Clocking & Timebase
| Parameter | Value |
|---|---|
| External Clock Input | Front panel SMB |
| External Clock Frequency | 20 MHz (nominal) |
Bus & System Interface
| Parameter | Value |
|---|---|
| Module Form Factor | VXI C-size |
| Number of Slots Occupied | 1 slot |
| VXI Device Type | Register-based slave |
| VXI Local Bus Support | Yes (Left & Right local bus) |
Software & Compliance
| Parameter | Value |
|---|---|
| Driver Software Support | VXIplug&play |
| Application Software Compatibility | Visual Basic, Agilent VEE, LabVIEW, C/C++ |
| I/O Library Compatibility | Agilent IO Libraries / Keysight Connection Expert |
Dynamic Performance
| Parameter | Value |
|---|---|
| Spurious-Free Dynamic Range (SFDR) | > 90 dBfs (dc to 8 MHz) |
| Signal-to-Noise Ratio (SNR) | > 74 dB (dc to 8 MHz) |
| Noise Spectral Density | <-142 dBfs/Hz (dc to 8 MHz) |
| Amplitude Flatness | ±0.1 dB (dc to 8 MHz) |
| Phase Linearity | ±2.0 degrees (dc to 8 MHz) |
Filter Performance
| Parameter | Value |
|---|---|
| Passband Ripple | < ±0.04 dB |
| Stopband Attenuation | > 110 dB |
Input Specifications
| Parameter | Value |
|---|---|
| Maximum Overvoltage Protection | ±15 V peak |
Environmental
| Parameter | Value |
|---|---|
| Storage Temperature Range | -40 °C to +75 °C |
| Operating Humidity | Up to 95% RH (non-condensing) |
| Operating Altitude | Up to 4,570 m (15,000 ft) |
| Cooling Requirements | 4.5 L/s @ 4.4 Pa (0.45 mm H2O) pressure drop |
Inputs & Outputs
| Parameter | Value |
|---|---|
| Input Connector | Single BNC (female) |
| External Clock, Trigger, and Sync Connectors | SMB (male) |
VXI Interface
| Parameter | Value |
|---|---|
| VXI Device Class | Register-based (A16/A32, D16/D32/D64) |
| VXIbus Specification Compliance | Revision 1.4 |
Technology
VXI Digitizer
Applications
High-performance signal analysis, digital signal processing (DSP), spectral analysis, and communications testing