The Measurement Computing / IOtech DAC488/2 is a 2-channel, 12-bit Digital-to-Analog converter engineered for precision signal generation in data acquisition and control applications. This GPIB-interfaced instrument delivers independent analog outputs with programmable voltage ranges, TTL-compatible digital I/O, and real-time waveform generation capabilities suitable for laboratory and industrial test environments.
Technical Specifications
Analog Output
• 2 channels, 12-bit resolution
• Programmable output ranges: ±1 V, ±2 V, ±5 V, ±10 V (software selectable unipolar or bipolar)
• Output impedance: 10 Ω
• Maximum DC output current: ±10 mA per channel
• Settling time: 6 µs to 0.003% FSR
• Update rate: 100 kS/s per channel maximum
Accuracy (25 ±5°C)
• ±1 V range: ±0.02% ±50 µV
• ±2 V range: ±0.02% ±100 µV
• ±5 V range: ±0.02% ±250 µV
• ±10 V range: ±0.02% ±500 µV
• Linearity: 0.005%
• Differential linearity: 0.001%
• Zero offset: 50 to 500 µV
Data Management
• Standard buffer: 8 Ksamples per channel
• Optional buffer: 480 Ksamples per channel
• Internal clock sources: 4 available
• External clock input: up to 10 MHz
Digital I/O
• 8 TTL-level digital inputs (includes external trigger and clock inputs)
• 8 TTL-level digital outputs (configurable as open collector)
Interface & Environmental
• IEEE 488 (GPIB) primary interface
• Power: 90–125 VAC or 210–250 VAC, 50/60 Hz; 20 VA maximum
• Operating temperature: 0 to 50°C
• Operating humidity: 0 to 95% RH, non-condensing
• Dimensions: 425 mm W × 305 mm D × 45 mm H
• Weight: 3.6 kg
– Key Features
• Dual independent output channels with synchronized or asynchronous operation
• Four internal clock sources plus external clock support to 10 MHz
• 8 Ksamples or 480 Ksamples per-channel buffering options
• TTL trigger input for synchronized waveform generation
• Update clock signal output for external synchronization
– Typical Applications
• Precision analog signal generation for automated test systems
• Real-time process control requiring dual synchronized outputs
• Function generation and arbitrary waveform synthesis
• Sensor simulation and excitation
– Compatibility & Integration
IEEE 488 connectivity integrates with GPIB-based instrumentation suites. TTL digital I/O allows direct interfacing with logic-level triggers and external clocking. Supplied connectors support analog outputs and digital I/O port connections.
