The HP 81533B is an optical head interface module designed for use with the Hewlett-Packard (later Agilent / Keysight) 8153A Lightwave Multimeter mainframe. It serves as the interface between the mainframe and various HP 8152x series high-performance optical heads, enabling high-precision optical power measurements over a broad spectrum of wavelengths and power levels.
Specifications
General
| Parameter | Value |
|---|---|
| Interfaces | 1x Optical head front-panel input connector, mainframe backplane interface (rear) |
| Display | 0.001 dB/dBm, 0.01 pW to 10 pW (via HP 8153A mainframe) |
Physical
| Parameter | Value |
|---|---|
| Power Supply | Powered by HP 8153A mainframe backplane |
| Operating Temperature | 0 °C to 55 °C |
| Dimensions (W×H×D) | 32 mm × 75 mm × 335 mm |
| Weight | 0.5 kg |
System Architecture
| Parameter | Value |
|---|---|
| Mainframe Compatibility | HP 8153A Lightwave Multimeter |
| Compatible Optical Heads | HP 81520A, HP 81521B, HP 81524A, HP 81525A |
| Form Factor | Single-slot plug-in module for HP 8153A mainframe |
System Performance
| Parameter | Value |
|---|---|
| Warmup Time | 20 minutes |
| Applicable Fiber Type | 9/125 µm to 100/140 µm, NA ≤ 0.3 |
| Display Resolution (Logarithmic) | 0.001 dB/dBm |
| Display Resolution (Linear) | 0.01 pW to 10 pW |
Performance with HP 81520A
| Parameter | Value |
|---|---|
| Sensor Element (with HP 81520A) | Si, 5 mm diameter |
| Wavelength Range (with HP 81520A) | 450 to 1020 nm |
| Power Measurement Range (with HP 81520A) | +10 to -100 dBm |
| Peak-to-Peak Noise (with HP 81520A) | <50 fW (average time 1 s) |
| Power Uncertainty / Accuracy (with HP 81520A) | ±2.2% |
Performance with HP 81521B
| Parameter | Value |
|---|---|
| Sensor Element (with HP 81521B) | Ge, 5 mm diameter |
| Wavelength Range (with HP 81521B) | 900 to 1700 nm |
| Power Measurement Range (with HP 81521B) | +3 to -80 dBm |
| Peak-to-Peak Noise (with HP 81521B) | <5 pW (average time 1 s) |
| Power Uncertainty / Accuracy (with HP 81521B) | ±2.2% |
Performance with HP 81524A
| Parameter | Value |
|---|---|
| Sensor Element (with HP 81524A) | InGaAs, 5 mm diameter |
| Wavelength Range (with HP 81524A) | 800 to 1650 nm |
| Power Measurement Range (with HP 81524A) | +3 to -90 dBm |
| Peak-to-Peak Noise (with HP 81524A) | <0.5 pW (average time 1 s) |
| Power Uncertainty / Accuracy (with HP 81524A) | ±2.2% |
Performance with HP 81525A
| Parameter | Value |
|---|---|
| Sensor Element (with HP 81525A) | InGaAs, 5 mm diameter |
| Wavelength Range (with HP 81525A) | 800 to 1650 nm |
| Power Measurement Range (with HP 81525A) | +27 to -70 dBm (1250 to 1650 nm), +23 to -70 dBm (800 to 1250 nm) |
| Peak-to-Peak Noise (with HP 81525A) | <50 pW (average time 1 s) |
| Power Uncertainty / Accuracy (with HP 81525A) | ±3.0% |
Configuration
| Parameter | Value |
|---|---|
| Number of Channels | 1 |
Analog Output
| Parameter | Value |
|---|---|
| Analog Output Voltage Range | 0 V to 2 V (into open circuit, linear proportional to power) |
| Analog Output Impedance | 600 Ω (typical) |
| Analog Output Connector | BNC |
Inputs & Outputs
| Parameter | Value |
|---|---|
| Optical Head Connector Interface | 15-pin D-Sub |
Environmental
| Parameter | Value |
|---|---|
| Storage Temperature | -40 °C to +75 °C |
| Operating Humidity | 95% R.H. (from 0 °C to 40 °C, non-condensing) |
Maintenance
| Parameter | Value |
|---|---|
| Calibration Interval | 1 year |
Technology
Fiber Optic Test & Measurement
Applications
Optical Power Measurement