The HP/Agilent 41501B Pulse Generator and Expander Unit extends the measurement capabilities of the 4155C and 4156C Precision Semiconductor Parameter Analyzers. This module provides pulse generation and resource expansion for dynamic device characterization, integrating directly into the analyzer’s rear connector with automatic resource recognition at boot-up. Available in five option configurations, the 41501B can be equipped with Pulse Generator Units, High-Power and Medium-Power Source Measure Units, and a Ground Unit to match specific test requirements.
## Technical Specifications
The 41501B connects directly to the host analyzer and presents all additional resources on the Channels: Channel Definition page, where they are managed identically to native measurement channels.
**Pulse Generation:**
• Pulse Width: 1 ns to 1 s
• Pulse Delay: 1 ns to 1 s
• Pulse Amplitude: 1 V to 20 V
• Pulse Repetition Rate: 1 Hz to 1 MHz
• Rise/Fall Time: < 300 ps
• Output Impedance: 50 Ω
• Output Modes: Single pulse, Continuous pulse, Burst pulse, External Trigger, Clock Output
**Trigger Input:**
• Trigger Delay: 1 ns to 1 s
• Trigger Level: -5 V to +5 V
**High-Power Source Measure Unit (HPSMU):**
• Current Sourcing/Sinking: Up to 1 A
• Voltage Sourcing: ±200 V
**Ground Unit (GNDU):** Included in all configurations; 1.6 A capacity.
**Physical:** 213 mm × 133 mm × 250 mm; 3.6 kg.
## Key Features
• Five configurable option packages (402, 410, 412, 420, 422)
• Automatic resource detection and integration
• Compatible with 16440A SMU/PGU selector
• Flexible pulse generation with nanosecond-level timing control
## Typical Applications
• Flash memory Write/Erase endurance testing
• Non-volatile memory device characterization
• Pulsed semiconductor device measurements
## Compatibility & Integration
Designed exclusively for the Agilent 4155C and 4156C analyzers. Plugs into the rear connector; additional measurement resources appear as native channels within the host software.
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