The Agilent (Keysight/HP) 437B is a low-cost, high-performance, single-channel average power meter designed for ATE systems and demanding benchtop measurements. Compatible with the 8480 family of power sensors, it measures frequencies from 100 kHz to 110 GHz and power levels from -70 dBm to +44 dBm, depending on the sensor used. It features an internal 50 MHz power reference oscillator for automatic calibration, preloaded sensor calibration factor tables, and compliance with MIL-STD-461C EMI specifications within a compact half-rack form factor.
Specifications
General
| Parameter | Value |
|---|---|
| Interfaces | HP-IB (GPIB) |
| Display | Custom LCD |
Physical
| Parameter | Value |
|---|---|
| Power Supply | 100, 120, 220, 240 Vac (+5%, -10%); 48-66 Hz (all voltages) and 360-440 Hz (100/120 Vac); 8 W max |
| Operating Temperature | 0 to 55 |
| Dimensions (W×H×D) | 212.6 × 88.5 × 273.3 |
| Weight | 2.6 |
Measurement Characteristics
| Parameter | Value |
|---|---|
| Number of Channels | 1 |
| Frequency Range | 100 kHz to 110 GHz (sensor dependent) |
| Power Range | -70 dBm to +44 dBm / 100 pW to 25 W (sensor dependent) |
| Measurement Units | Watts, dBm, dB (relative), % |
| Display Resolution | Selectable to 0.001 dB |
Accuracy and Uncertainty
| Parameter | Value |
|---|---|
| Instrumentation Linearity | ±0.02 dB (logarithmic), ±0.5% (linear) |
Power Reference Oscillator
| Parameter | Value |
|---|---|
| Reference Frequency | 50 MHz |
| Reference Power Level | 1.00 mW (0.0 dBm) |
| Reference Connector Type | Type-N (female) |
Measurement Speed and Processing
| Parameter | Value |
|---|---|
| Duty Cycle Correction | Yes (for peak power representation of average power) |
| Offset Range | -99.99 to +99.99 dB |
Sensor Interface and Compatibility
| Parameter | Value |
|---|---|
| Compatible Sensor Families | 8480 family |
| Automatic Zeroing | Yes |
Connectivity and Interfaces
| Parameter | Value |
|---|---|
| Analog Output | Rear panel BNC |
Physical Specifications
| Parameter | Value |
|---|---|
| Form Factor | 3.5 inches high, half-rack wide |
Environmental
| Parameter | Value |
|---|---|
| Storage Temperature | -40 °C to +75 °C |
| Operating Humidity | Up to 95% relative humidity to 40°C |
| Operating Altitude | Up to 4572 m (15,000 ft) |
Performance
| Parameter | Value |
|---|---|
| Reference Oscillator Accuracy | ±1.2% (1 year, 0 to 55 °C) |
| Reference Oscillator SWR | 1.06 max |
| Averaging (Filtering) | Automatic or manual (1 to 512 in powers of 2) |
Power
| Parameter | Value |
|---|---|
| Power Consumption | 8 W max |
| AC Line Frequency | 48 to 66 Hz and 360 to 440 Hz |
Features
| Parameter | Value |
|---|---|
| Save/Recall Registers | 10 instrument states |
Programming & Control
| Parameter | Value |
|---|---|
| HP-IB Capabilities | SH1, AH1, T5, TE0, L4, LE0, SR1, RL1, PP1, DC1, DT1, C0 |
Configuration Options
| Parameter | Value |
|---|---|
| Option 002 | Rear panel sensor input |
| Option 003 | Rear panel sensor input and rear panel reference oscillator output |
Technology
RF / Microwave
Applications
Average Power Measurement