The Keysight Technologies (formerly Agilent / HP) 5328A is a highly versatile, modular 100 MHz universal frequency counter and timer. Known for its rugged reliability and extensive option slot configurations, the 5328A serves as a foundational instrument for precise frequency, period, time interval, and ratio measurements in laboratory and automatic test equipment (ATE) environments.
Specifications
General
| Parameter | Value |
|---|---|
| Interfaces | HP-IB (GPIB) optional (Option 011) |
| Display | 8-digit 7-segment LED display |
Physical
| Parameter | Value |
|---|---|
| Operating Temperature | 0 to 50 °C |
Input Channel A and Channel B Characteristics
| Parameter | Value |
|---|---|
| Frequency Range (DC Coupled) | 0 Hz to 100 MHz |
| Sensitivity (Sinewave) | 50 mV RMS (0 Hz to 100 MHz), 25 mV RMS (0 Hz to 40 MHz) |
| Input Impedance (Resistance) | 1 MΩ |
| Input Coupling | AC or DC (switchable) |
| Trigger Slope | Positive or negative (independent controls) |
| Channel Setup | Separate or Common A (switchable) |
| Minimum Pulse Width | 5 ns |
Measurement Modes & Functions
| Parameter | Value |
|---|---|
| Frequency Measurement (Channel A/B) | 0 Hz to 100 MHz |
Time Base & Reference Oscillator Options
| Parameter | Value |
|---|---|
| Nominal Reference Frequency | 10 MHz |
| Standard Aging Rate (per Month) | < 3 x 10^-7 |
| Standard Line Voltage Stability | < 1 x 10^-7 (for 10% line change) |
| High-Stability OCXO Option 010 Aging Rate (per Day) | < 5 x 10^-10 |
| High-Stability OCXO Option 010 Temperature Stability | < 7 x 10^-9 (0 to 50 °C) |
| External Reference Input Impedance | 1 kΩ |
| External Reference Minimum Level | 1 V RMS |
| Internal Reference Output Frequency | 10 MHz |
| Internal Reference Output Amplitude | > 1 V p-p into 50 Ω |
Resolution & Measurement Accuracy
| Parameter | Value |
|---|---|
| Single-Shot Time Interval Resolution | 100 ns |
| Time Interval Average Resolution | Down to 10 ps |
Rear Panel, Interfaces & Accessory Options
| Parameter | Value |
|---|---|
| GPIB Interface Capability | Optional via Option 011 |
| Digital Voltmeter (DVM) Option | Option 020 adds internal Digital Voltmeter capability |
| High Performance Universal Module | Option 040 (improves time interval resolution to 10 ns single-shot) |
Physical, Power & Environmental
| Parameter | Value |
|---|---|
| Number of Display Digits | 8 digits standard |
| Storage Temperature Range | -40 °C to +75 °C |
Options
| Parameter | Value |
|---|---|
| Option 010 OCXO Short-Term Stability | < 1 × 10⁻¹¹ rms for a 1 s average |
| Option 010 OCXO Line Voltage Stability | < 1 × 10⁻⁹ for ±10% line voltage variation |
| Option 010 OCXO Warm-up Time | Within 5 × 10⁻⁹ of final value in 20 minutes |
| Option 020 DVM Ranges | ±10 V, ±100 V, ±1000 V (autoranging or manual) |
| Option 040 Time Interval Hold-off | Variable from 20 µs to 20 ms |
| Option 041 HP-IB Programmability | Adds HP-IB control of trigger levels, coupling, attenuation, slope, and impedance |
Display
| Parameter | Value |
|---|---|
| Display Type | 7-segment red LED |
Power Requirements
| Parameter | Value |
|---|---|
| Line Voltage Options | 100 V / 120 V / 220 V / 240 V AC (+5%, -10%), switch selectable |
Environmental
| Parameter | Value |
|---|---|
| Operating Altitude | Up to 4,600 m (15,000 ft) |
| Storage Altitude | Up to 15,240 m (50,000 ft) |
Applications
Universal Frequency and Time Interval Measurement