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General| Category | Measuring Instruments |
|---|---|
| Manufacturer | HP |
| Model | E4418A |
| Type | Power Meter |
| Accuracy | ±0.02 dB |
| Display | LCD |
| Input Impedance | 50 ohms |
| Interface | GPIB, RS-232 |
| Dynamic Range | 90 dB |
| Power Supply | 100-240 VAC, 50/60 Hz |
| Sensor Compatibility | HP 8480 Series |
Information subject to change without notice, disclaims warranties.
Product met published specifications at shipment, traceable calibration.
One-year warranty against defects, repair/replace policy.
Warranty does not apply to defects from improper maintenance or misuse.
Buyer's sole remedies, HP not liable for damages.
Explains the use of WARNING and CAUTION notices for hazards.
Safety Class I product, proper grounding, no operator serviceable parts.
Proper grounding before switching on, dangers of interruption.
Explains CE, ISM, CSA marks, and external protective earth terminal.
Designed and tested according to IEC Publication 1010-1 safety requirements.
Steps to package the power meter for shipment to Hewlett-Packard for service.
Lists power meter specifications and how to interpret them.
Contains procedures to test the power meter's electrical performance.
Contains checks and adjustments for proper power meter performance.
Describes how each power meter assembly operates.
Details replaceable parts and assembly/disassembly.
Details power meter specifications and supplemental characteristics.
Lists specifications for the power meter itself, including frequency, power range, and resolution.
Details the accuracy specifications for the power meter and zero set.
Specifies the power output and accuracy of the internal power reference.
Details supplemental characteristics like frequency, SWR, and measurement speed.
Defines zero drift and its dependency on power sensors.
Defines measurement noise and its relation to averaging.
Lists zero drift and measurement noise for various power sensors.
Details settling times for HP 8480 series and ECP-series power sensors.
Provides settling time data for HP ECP-series power sensors in different modes.
Defines terms like Zero Set, Zero Drift, and Measurement Noise for power sensors.
Details rear panel connectors, including Recorder Output, HP-IB, Ground, and Line Power.
Lists operating and storage conditions, including temperature, humidity, and altitude.
Covers instrument dimensions, weight, safety standards, and remote programming.
Lists compatibility commands for HP-IB interface.
Information about the instrument's battery.
Explains that procedures in this chapter test electrical performance against Chapter 1 specs.
Lists equipment needed for adjustments and performance tests.
Explains how to tabulate and use performance test results.
Specifies that performance verification should be done annually.
Assumes user knowledge of test equipment and procedures.
Verifies the digital settability of zero for the power meter.
Step-by-step procedure to perform the Zero Test.
Verifies the power meter's accuracy for various power inputs.
Step-by-step instructions to perform the instrument accuracy test.
Table showing acceptable limits for instrument accuracy test results.
Verifies the output level of the internal power reference oscillator.
Details the equipment and setup for the Power Reference Level Test.
Step-by-step instructions for calculating power reference oscillator power.
Table for recording results of the Power Reference Level Test.
Verifies the interface between HP E-series sensors and the power meter.
Verifies that the meter/sensor combination can make RF measurements.
Step-by-step instructions for the functional test.
Table for recording results of the functional test.
Comprehensive table to record all performance test results.
Explains adjustments and checks for ensuring proper power meter performance.
Warning about performing adjustments with power applied and covers removed.
Lists recommended test equipment for adjustment procedures.
Lists adjustments and tests related to assembly replacements.
Adjusts the power reference oscillator output frequency to 50.0 ±0.5 MHz.
Step-by-step guide to adjust the oscillator frequency.
Factory adjusted to 1.0 mW ±0.7%, procedure for re-adjustment.
Provides mathematical formulas and assumptions for the level adjustment.
Step-by-step procedure for setting up and measuring for level adjustment.
Continues the procedure for measuring V0 and Vcomp.
Adjusts A2R90 to match calculated V1 value.
Lists parameters and values for calculating measurement uncertainty.
Procedure to adjust the display's brightness and contrast.
Explains that this chapter describes how power meter assemblies operate.
Describes the 40W switching power supply and its fuses.
Details the processor assembly, including control, calibration, and output functions.
Covers LCD controller, LED backlight, analog multiplexer, and ISB communication.
Discusses peripherals, crystal oscillator, program memory, and RAM within the processor assembly.
Describes the front panel assembly, including LCD, keypad, and inputs.
Details the interface assembly for remote control, supporting HP-IB.
Explains the daughter assembly's vertical loading and connectors for measurement assemblies.
Describes how the measurement assembly amplifies and converts sensor signals to digital words.
Details DSP control of chopper driver, AUX ADC usage, and sensor communication.
Visual representation of the power meter's internal components and connections.
Details components and assemblies that can be ordered and how to assemble/disassemble for repair.
Lists reference designators, descriptions, HP part numbers, and check digits for assemblies.
Lists part numbers for various sensor and reference cable assemblies.
Procedure for replacing faulty front panel sensor or power reference cables.
Details how to upgrade the power meter's firmware.
Guidelines for removing and replacing major assemblies in the power meters.
Step-by-step instructions for removing the A1 power supply assembly.
Step-by-step instructions for removing the A2 processor assembly.
Step-by-step instructions for removing the A4 interface assembly.
Instructions for removing the A5 daughter and A6 measurement assemblies.
Step-by-step instructions for removing the A7 fan assembly.
Procedure for removing the instrument's lithium battery.
Step-by-step instructions for removing the A3 front panel assembly.
Procedure for replacing front panel sensor cable assemblies.
Instructions for replacing front panel power reference cable assemblies.
Procedure for replacing rear panel power sensor cable assemblies.
Procedure for replacing rear panel power reference cable assembly.
