The Keysight (Agilent/HP) 5348A is a high-performance 26.5 GHz microwave frequency counter and true power meter housed in a single, rugged half-rack instrument. Capable of making highly accurate and high-resolution measurements from 10 Hz to 26.5 GHz, the 5348A is engineered with exceptional dynamic range and linearity. This instrument is ideal for portable, field-service, and benchtop microwave applications, particularly when configured with the optional internal rechargeable battery for up to two hours of cordless operation.
Specifications
General
| Parameter | Value |
|---|---|
| Interfaces | GPIB (IEEE-488) |
| Display | Custom backlit liquid crystal display (LCD) |
| Power Sensor Maximum Cable Length | 61 m (200 ft) |
| Save/Recall Registers | 9 complete instrument setups |
Physical
| Parameter | Value |
|---|---|
| Power Supply | 90 - 132 V AC / 198 - 264 V AC (47 - 66 Hz / 47 - 440 Hz); 11.5 - 18 V DC; optional internal battery |
| Operating Temperature | 0 to 50 °C |
| Dimensions (W×H×D) | 213 mm × 133 mm × 402 mm |
| Weight | 9.1 kg (20 lb) |
| Rack Height | 3U (half-rack width) |
Frequency Measurement (Channel 1)
| Parameter | Value |
|---|---|
| Frequency Range (Ch 1) | 10 Hz - 520 MHz |
| Sensitivity (Ch 1) | 25 mV rms |
| Input Impedance (Ch 1) | Selectable 1 MΩ (shunted by < 70 pF) or 50 Ω nominal |
| Coupling (Ch 1) | AC |
| Maximum Input Level (Ch 1) | 1 MΩ: 1 V rms; 50 Ω: 1.5 V rms |
| Damage Level (Ch 1) | 1 MΩ: 120 V (DC + peak AC) ≤ 1 kHz; 50 Ω: 5 V rms |
| Connector Type (Ch 1) | BNC female |
Frequency Measurement (Channel 2)
| Parameter | Value |
|---|---|
| Frequency Range (Ch 2) | 500 MHz - 26.5 GHz |
| Sensitivity (Ch 2) | -32 dBm (500 MHz - 12.4 GHz), -27 dBm (12.4 GHz - 20 GHz), -20 dBm (20 GHz - 26.5 GHz) |
| Maximum Input Level (Ch 2) | +7 dBm |
| Damage Level (Ch 2) | +25 dBm (peak) |
| Input Impedance (Ch 2) | 50 Ω nominal |
| VSWR (Ch 2) | < 2:1 typical to 18 GHz, < 3:1 typical to 26.5 GHz |
| Acquisition Time (Ch 2) | < 125 ms |
| FM Tolerance (Ch 2) | 20 MHz p-p |
| AM Tolerance (Ch 2) | Any modulation depth, as long as the minimum signal level is above the sensitivity limit |
| Connector Type (Ch 2) | Precision APC-3.5 male |
| Tracking Speed (Ch 2) | 1 MHz/sec |
Power Measurement
| Parameter | Value |
|---|---|
| Frequency Range (Power) | 100 kHz - 50 GHz (sensor dependent) |
| Power Range (Power) | -70 to +44 dBm (sensor dependent) |
| Power Resolution | 0.01 dB or 0.1% (selectable) |
| Instrumentation Accuracy | ±0.02 dB (±0.5%) |
| Sensor Compatibility | HP 8480 series power sensors |
| Built-In Calibration Tables | ROM-stored calibration data for HP 8481A, HP 8481D, HP 8482A, HP 8485A, and HP 8487A |
| Power Meter Linearity | Within ±0.5% (included in instrument accuracy) |
Internal Power Calibrator
| Parameter | Value |
|---|---|
| Calibrator Frequency | 50 MHz |
| Calibrator Power Level | 1.00 mW (0 dBm) |
| Calibrator Accuracy | ±1.2% (at 25 °C) |
Reference Oscillator (Standard)
| Parameter | Value |
|---|---|
| Reference Frequency | 10 MHz |
| Aging Rate (Per Month, Standard) | < 1 × 10^-7 |
| Temperature Stability (Standard) | < 1 × 10^-6 (0 °C to 50 °C) |
| Line Voltage Stability (Standard) | < 1 × 10^-7 for a 10% change |
Reference Oscillator (Option 001 Oven)
| Parameter | Value |
|---|---|
| Aging Rate (Per Day, Option 001) | < 5 × 10^-10 (after 24-hour warm-up) |
| Temperature Stability (Option 001) | < 7 × 10^-9 (0 °C to 50 °C) |
| Warm-up Time (Option 001) | < 20 minutes to within 5 × 10^-9 of final value |
Reference Input & Output
| Parameter | Value |
|---|---|
| External Reference Input Frequency | 1, 2, 5, and 10 MHz |
| External Reference Input Level | 0.2 V to 2.0 V rms |
| External Reference Impedance | 1 kΩ nominal |
| Internal Reference Output Frequency | 10 MHz |
Measurement Functions
| Parameter | Value |
|---|---|
| Frequency Resolution Settings | Selectable: 1 Hz, 10 Hz, 100 Hz, 1 kHz, 10 kHz, 100 kHz, 1 MHz |
| Self-Test Diagnostics | Automatic internal diagnostics upon power-on |
Power Requirements
| Parameter | Value |
|---|---|
| Line Voltage Ranges | 90 - 132 V AC / 198 - 264 V AC (slide switch selection) |
| Line Frequency Range | 47 - 66 Hz (all ranges); 47 - 440 Hz (90 - 132 V AC only) |
Physical Characteristics
| Parameter | Value |
|---|---|
| Form Factor | Half-rack width, 3U height |
Environmental
| Parameter | Value |
|---|---|
| Storage Temperature Range | -40 °C to +75 °C |
| Operating Humidity Limit | 95% RH at 40 °C (non-condensing) |
| Maximum Operating Altitude | 4,600 m (15,000 ft) |
Options
| Parameter | Value |
|---|---|
| Option 001 | High-stability oven timebase |
| Option 002 | Rear panel inputs |
| Option 002 Description | Rear panel inputs (places Ch 1, Ch 2, Sensor, and Calibrator connectors on rear) |
Inputs & Outputs
| Parameter | Value |
|---|---|
| Channel 1 Low-Pass Filter Cutoff | 100 kHz (nominal) |
| GPIB Interface Capabilities | SH1, AH1, T5, L4, SR1, RL1, PP0, DC1, DT1, C0, E2 |
Performance
| Parameter | Value |
|---|---|
| Channel 2 FM Modulation Rate | Up to 10 MHz |
Compliance
| Parameter | Value |
|---|---|
| EMC Compliance | CISPR 11 / EN 55011 Group 1, Class A |
| Safety Compliance | EN 61010-1 / IEC 1010-1 |
Frequency Counter
| Parameter | Value |
|---|---|
| Frequency Measurement Speed (HP-IB) | Up to 30 readings per second |
Power Meter
| Parameter | Value |
|---|---|
| Power Sensor Calibration Factor Range | 50.0% to 120.0% (in 0.1% steps) |
| Power Measurement Speed (HP-IB) | Up to 20 readings per second |
Power & Battery
| Parameter | Value |
|---|---|
| Battery Operating Time (Option 002) | Typically 2 hours |
Technology
Heterodyne / Frequency Counter & Power Meter
Applications
Microwave Frequency and Power Measurement