The EIP Microwave 548A is a high-performance microwave frequency counter designed for precise frequency and power measurements up to 26.5 GHz. Known for its robust design and exceptional signal discrimination, it serves as a staple tool in microwave laboratories and automated test systems. It features a high-visibility 12-digit LED readout and three input bands spanning from 10 Hz up to 26.5 GHz.
Specifications
General
| Parameter | Value |
|---|---|
| Display | 12-digit LED readout |
Frequency Measurement Channels
| Parameter | Value |
|---|---|
| Low Frequency Band 1 Range | 10 Hz to 100 MHz |
| Low Frequency Band 1 Sensitivity | 25 mV rms |
| Low Frequency Band 1 Impedance | 1 MΩ |
| Low Frequency Band 1 Connector | BNC female |
| Medium Frequency Band 2 Range | 10 MHz to 1.0 GHz |
| Medium Frequency Band 2 Impedance | 50 Ω |
| Medium Frequency Band 2 Connector | BNC female |
| Microwave Band 3 Range | 1.0 GHz to 26.5 GHz |
| Microwave Band 3 Impedance | 50 Ω |
Power Measurement
| Parameter | Value |
|---|---|
| Power Measurement Frequency Range | 1.0 GHz to 26.5 GHz (with Option 02) |
| Power Measurement Display Units | dBm (with Option 02) |
Time Base and Reference Oscillator
| Parameter | Value |
|---|---|
| Internal Reference Frequency | 10 MHz |
| Aging Rate per Day | < 5 × 10^-10 per day after 24-hour warm-up (with Option 01 Ovenized Oscillator) |
| Reference Output Frequency | 10 MHz |
Control and Math Functions
| Parameter | Value |
|---|---|
| Display Hold | Front panel button toggle |
Environmental Limits
| Parameter | Value |
|---|---|
| Operating Temperature Range | 0 to 50 °C |
Options and Accessories
| Parameter | Value |
|---|---|
| Rear Panel Input Connector Option | Option 09 |
Power Requirements
| Parameter | Value |
|---|---|
| Line Voltage Settings | 100 / 120 / 220 / 240 VAC ±10% |
Performance
| Parameter | Value |
|---|---|
| Multiple-Signal Amplitude Discrimination Separation | 10 dB (minimum separation between largest signal and others) |
Power Supply
| Parameter | Value |
|---|---|
| AC Line Voltage Ranges | 100 / 120 / 220 / 240 VAC (±10%, selector switch configuration) |
Interfaces & Control
| Parameter | Value |
|---|---|
| GPIB Address Selection | Front-panel keyboard |
Technology
Microwave Frequency Counting
Applications
RF & Microwave Frequency and Power Analysis