The Keysight Technologies (formerly Agilent / HP) E1439C is a high-performance, single-channel 12-bit digitizer VXI module operating at sample rates up to 95 MSa/s. Specifically designed for RF communication, radar, and IF digitizing applications, it features a 70 MHz IF input, integrated analog signal conditioning, anti-alias protection, and digital decimation filtering with a tunable center frequency. Complete with up to 1.2 GB of onboard capture FIFO memory, the E1439C provides exceptional spurious-free dynamic range and high-precision signal analysis in a single-slot C-size VXI form factor.
Specifications
General
| Parameter | Value |
|---|---|
| Interfaces | VXIbus |
| Warm-Up Time | 30 minutes |
Physical
| Parameter | Value |
|---|---|
| Power Supply | Powered by VXI backplane (+5 V, -5.2 V, -2 V, +12 V, -12 V) |
| Operating Temperature | 0 to +55 °C |
| Dimensions (W×H×D) | 30.5 mm × 233.4 mm × 340 mm |
Analog Input Characteristics
| Parameter | Value |
|---|---|
| Number of Input Channels | 1 |
| IF Input Center Frequency | 70 MHz |
| Baseband Bandwidth | 0 to 36 MHz |
| IF Bandwidth | 36 MHz |
| Input Impedance | 50 Ω |
| Signal Conditioning | Integrated |
Analog-to-Digital Conversion (ADC)
| Parameter | Value |
|---|---|
| ADC Resolution | 12-bit |
| Maximum Sampling Rate | 95 MSa/s |
| Noise Density | -132 dBfs/Hz |
| Residual Spurious Signal Contamination | at least -90 dBfs |
| Spurious-Free Dynamic Range (SFDR) | -90 dBfs (residual) |
| Distortion (Full-Scale Inputs) | <-62 dBc |
| Distortion (Lower Input Levels) | <-70 dBc |
| Anti-Aliasing Filter | Integrated |
Onboard Memory & DSP
| Parameter | Value |
|---|---|
| Onboard Memory Type | RAM FIFO |
| Standard Memory Size | 144 MB |
| Maximum Expandable Memory | 1.2 GB |
| Digital Downconversion (DDC) | Supported |
| Digital Decimation Filters | Supported (with tunable center frequency) |
Bus & System Interface
| Parameter | Value |
|---|---|
| System Bus Interface Type | VXIbus |
| VXI Form Factor | C-size |
| VXI Slots Occupied | 1 slot |
| Local Bus Support | No (E1439D only) |
| Optical Front Panel Data Port | Yes |
Triggering & Synchronization
| Parameter | Value |
|---|---|
| Multi-channel Synchronization | Compatible |
Software & Standards Compliance
| Parameter | Value |
|---|---|
| Driver Software Support | VXIplug&play compatible |
Analog Input
| Parameter | Value |
|---|---|
| Input Coupling | AC or DC |
| Full-scale Input Range | -24 dBm to +20 dBm in 2 dB steps |
| Maximum Safe Input Voltage | ±10 V (DC + peak AC) |
Sampling and Clock
| Parameter | Value |
|---|---|
| External Clock Input Frequency | 10 MHz to 95 MHz |
| Reference Clock Input | 10 MHz |
Digital Filters and Decimation
| Parameter | Value |
|---|---|
| Output Formats | 16-bit real, 16-bit complex (I/Q), 32-bit complex (I/Q) |
Triggering
| Parameter | Value |
|---|---|
| Trigger Modes | Free run, External, Bus, Signal level |
VXI Interface
| Parameter | Value |
|---|---|
| VXI Device Type | Register-based |
Signal Inputs
| Parameter | Value |
|---|---|
| Analog Input Bandwidth | 90 MHz |
Clocking & Synchronization
| Parameter | Value |
|---|---|
| External Clock Input Level | 0 dBm to +10 dBm |
| External Clock Input Impedance | 50 Ω |
Environmental
| Parameter | Value |
|---|---|
| Operating Altitude | Up to 4,600 m |
Technology
Analog-to-Digital Conversion & DSP
Applications
RF Communication, Radar, and IF Digitizing