Astronics / EADS / Racal 2461-Cd Universal Counter Timer VXI Card
The Astronics/EADS/Racal 2461-Cd is a Universal Counter Timer VXI Card designed for a wide range of timing and frequency measurement applications. This VXI card offers high-resolution timing, frequency, period, pulse width, and phase measurements. Ideal for automated test equipment (ATE) systems, calibration labs, and research and development environments, it provides precise and reliable performance.
- Model
- Astronics / EADS / Racal 2461-Cd
- Calibration
- Available on request
- Price
- $1,800
- Status
- In stock
- RFQ ref
- 2461-Cd
This unit
The Astronics/EADS/Racal 2461-Cd is a C-size VXI universal counter timer card delivering precision frequency, timing, and voltage measurements for automated test equipment, calibration labs, and R&D environments. This module functions as a direct replacement for legacy Racal 2461 variants and Keysight E1420A/B models. The -Cd configuration omits an internal oscillator, requiring external timebase sourcing.
Technical Specifications Measurement Performance
Frequency measurement to 200 MHz with 9–10 digit/second resolution
Time interval: 1 ns single-shot resolution; 100 ps average mode resolution
Pulse characterization: automatic rise time, fall time, and pulse width measurement
Phase measurement: automatic phase detection supported
DVM voltage measurement: ±5.1 V standard range; ±42–51 V with ×10 attenuation; ±200 V with ×40 attenuation (2461A)
Trigger resolution: 2.5 mV
Key Features
Automatic measurement functions: frequency, period, time interval, rise/fall time, pulse width, duty cycle, frequency ratio, totalize, phase, and DVM
Nine-mode arming capability with selectable sources from external inputs or VXI TTL trigger lines
Programmable measurement timeout for systems with intermittent or absent input signals
Internal storage capacity: 14,000 readings
Per-channel 50 kHz low-pass filters with selectable hysteresis for noise mitigation
Adjustable sensitivity for low-level and noisy signal optimization
Time Error Correction (TEC) and recipromatic techniques minimize measurement time without performance loss
Typical Applications Frequency and timing validation in production test; component characterization in R&D; precision voltage and phase measurements in calibration workflows; automated multifunction parameter acquisition in instrument racks.
Compatibility & Integration VXIbus C-size module. Functional replacement for Racal 2461 (Cd, Ce, S-2276B, S-2391B) and Keysight E1420A/B. Related -Ce variant includes TCXO; -Cf includes oven-controlled crystal oscillator.
Specifications
| Parameter | Value |
|---|---|
| Frequency Range | DC to 200 MHz | Voltage / Current Range: ±5.1 V standard |
Astronics / EADS / Racal 2461-Cd — Repair & Calibration Service
Aumictech offers NIST-traceable calibration and repair for the Astronics / EADS / Racal 2461-Cd. Calibration covers all module-specific parameters per manufacturer datasheet, output accuracy and linearity, frequency accuracy, and VXI register and trigger bus compliance. All calibrations ship with a NIST-traceable certificate. Turnaround is typically 1–3 business days after receipt.
Common Astronics / EADS / Racal 2461-Cd faults: relay contact wear, DAC/ADC drift, VXI backplane connector oxidation. Common faults include relay contact wear, DAC or ADC gain drift, and VXI backplane edge connector oxidation. Most modules are repaired at the component level with full post-repair verification in a C-size or D-size mainframe.
Astronics / EADS / Racal 2461-Cd price
This Astronics / EADS / Racal 2461-Cd is listed at $1,800. Calibration is available separately from $450. Contact us for volume pricing or if you need multiple units.
Astronics / EADS / Racal 2461-Cd calibration cost
NIST-traceable calibration for the Astronics / EADS / Racal 2461-Cd is $450 (standard — pass/fail certificate and calibration sticker) or $650 (full measured data at every test point, reference standards documented, traceability chain included). Calibration for this instrument covers all module-specific parameters per manufacturer datasheet, output accuracy and linearity, frequency accuracy, and VXI register and trigger bus compliance. Turnaround is 1 to 3 business days after receipt. See full calibration details →
