HP 3488A Switch/Control Unitw 3 x 44474A Cards
The HP 3488A Switch/Control Unit is a versatile mainframe that accepts a variety of plug-in cards to create a customized switching system. This unit includes three 44474A cards, which are general-purpose relay multiplexers.
- Model
- HP 3488A / 44474A
- Calibration
- Available on request
- Price
- $330
- Status
- In stock
- RFQ ref
- 3488A / 44474A
This unit
The HP 3488A Switch/Control Unit with three 44474A modules is a programmable digital I/O platform for automated test systems. The 3488A mainframe accepts up to five plug-in modules and communicates via HP-IB for seamless integration into ATE environments. This configuration provides 48 total bi-directional digital lines and 12 handshake lines across three 44474A cards, each delivering 16 TTL-compatible I/O lines plus 4 control handshake lines.
Technical Specifications
- Mainframe slots: Five plug-in module positions
- Module type: Three 44474A 16-bit digital input/output cards
- I/O lines per module: 16 bi-directional, TTL compatible
- Handshake lines per module: 4 dedicated control lines
- Total configuration: 48 digital I/O lines, 12 handshake lines
- Output architecture: Open-collector outputs on I/O lines
- Addressing modes: Individual bit, 8-bit port pairs, or 16-bit word
- Control interface: HP-IB (IEEE 488) programmable
- Configuration storage: 40 complete switch configurations
Key Features
- Flexible I/O addressing - select individual bits, dual 8-bit ports, or full 16-bit word operation
- TTL signal levels with open-collector output topology for direct logic integration
- Dedicated handshake lines enable protocol-driven communication with external devices
- Built-in self-test capability for operational verification
- Modular expansion - add or reconfigure modules to match evolving test requirements
- HP-IB programmability supports automated test sequences and remote control
Typical Applications
- Automated test equipment (ATE) control and signal switching
- Production test systems requiring multi-channel digital control
- Benchtop automation and development testing
- External device control in measurement systems
- Digital handshake and protocol implementation in test sequences
Compatibility & Integration The HP 3488A accepts plug-in modules including relay multiplexers, matrix switches, VHF/microwave switches, and breadboard modules. The 3499 Switch Family provides software and firmware compatibility with the 3488A for users requiring switching solutions.
HP 3488A / 44474A — Repair & Calibration Service
Aumictech offers NIST-traceable calibration and repair for the HP 3488A / 44474A. All calibrations are performed to NIST-traceable standards and ship with a certificate. Turnaround is typically 1–3 business days after receipt.
HP 3488A / 44474A price
This HP 3488A / 44474A is listed at $330. Calibration is available separately from $450. Contact us for volume pricing or if you need multiple units.
HP 3488A / 44474A calibration cost
NIST-traceable calibration for the HP 3488A / 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). Turnaround is 1 to 3 business days after receipt. See full calibration details →
