Agilent 44474A card with 44474A Connector Terminal Relay Block .
Agilent 44474A,"Relay card with terminal block for signal routing in data acquisition systems. Designed for use with high-density switching platforms. Supports a variety of signal types for testing and control applications. Enables efficient connectivity and easy integration in automated test setups and bench configurations."
- Model
- Agilent 44474A
- Calibration
- Available on request
- Price
- $139
- Status
- In stock
- RFQ ref
- 44474A
This unit
The Agilent 44474A Digital I/O Module, paired with the 44474A Connector Terminal Relay Block, provides 16 bi-directional data lines and 4 control/handshaking lines for signal routing in data acquisition and automated test systems. The module supports flexible addressing - individual bit selection, two independent 8-bit ports, or a single 16-bit word - enabling simultaneous input and output operations. TTL-compatible inputs and open-collector outputs deliver 0.125 A current sink capability per I/O line.
The 44474A integrates into Agilent 3499A/B/C mainframes and the 3488A Switch/Control Unit (Option 014), making it suitable for high-density switching platforms and bench test configurations.
Technical Specifications
Data Lines:- 16 bi-directional lines with TTL input compatibility and open-collector output
- Output voltage (high): >2.4 V @ I <8 mA
- Output voltage (low): <0.4 V @ I 2.0 V
- Input voltage (low): <0.8 V
- Maximum line-to-chassis voltage: +30 V DC
- Current sink capability: Up to 0.125 A at Vout 2.4 V @ I <400 µA
- Output voltage (low): <0.5 V @ I 2.0 V
- Input voltage (low): <0.8 V
- Maximum line-to-chassis voltage: +5 V DC
Key Features
- Three addressing modes: individual bits, dual 8-bit ports, or single 16-bit word
- Simultaneous input and output operation capability
- TTL-level signal compatibility
- 44474A Connector Terminal Relay Block: 8 × 3 × 2 in, 0.5 lbs
Typical Applications
- Automated test equipment and bench configurations
- High-density switching platforms requiring flexible signal routing
- General-purpose digital control and monitoring in data acquisition systems
Compatibility & Integration Designed for Agilent 3499A/B/C mainframes and available as Option 014 for the 3488A Switch/Control Unit. Note: This product is obsolete per manufacturer designation; availability through third-party suppliers.
Specifications
| Parameter | Value |
|---|---|
| Voltage / Current Range | ±30 V DC (I/O lines), ±5 V DC (handshake lines), 0.125 A sink per line |
Agilent 44474A — Repair & Calibration Service
Aumictech offers NIST-traceable calibration and repair for the Agilent 44474A. Calibration covers per-channel threshold accuracy, input leakage current, logic level high/low margins, and signal timing verification. All calibrations ship with a NIST-traceable certificate. Turnaround is typically 1–3 business days after receipt.
Common Agilent 44474A faults: ESD-damaged input protection, failed driver ICs, connector pin damage. Most failures involve ESD-damaged input protection circuitry, failed logic driver ICs, or mechanical connector pin damage. Board-level component replacement is standard practice.
Agilent 44474A price
This Agilent 44474A is listed at $139. Calibration is available separately from $450. Contact us for volume pricing or if you need multiple units.
Agilent 44474A calibration cost
NIST-traceable calibration for the Agilent 44474A 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 per-channel threshold accuracy, input leakage current, logic level high/low margins, and signal timing verification. Turnaround is 1 to 3 business days after receipt. See full calibration details →
