User`s guide
Table Of Contents
- Legal Information
- Equipment Operation
- General Safety Considerations
- Regulatory Information
- List of Related Publications
- Agilent TechnologiesE4418B Options
- About this Guide
- Getting Started
- Power Meter Operation
- Introduction
- Battery Operation (Option 001)
- Zeroing and Calibrating the Power Meter
- Making Measurements with the AgilentE-Series Power Sensors
- Making Measurements with the Agilent8480 Series Power Sensors
- Making Measurements using Sensor Calibration Tables
- Making Measurements using Frequency Dependent Offset Tables
- Setting the Units of Measurement
- Selecting Units of Measurement from the Softkeys
- Making Relative Measurements
- Setting the Resolution
- Setting Offsets
- Setting Averaging
- Measuring Pulsed Signals
- Setting Measurement Limits
- Selecting a Digital or Analog Display
- Setting the Range
- Configuring the Remote Interface
- Recorder Output
- Saving and Recalling Power Meter Configurations
- How Measurements are Calculated
- Presetting the Power Meter
- Self Test
- Operator Maintenance
- Contacting Agilent Technologies
- Menu Reference
- Error Messages
- Specifications
Power Meter Operation
Zeroing and Calibrating the Power Meter
2-14 Agilent E4418B User’s Guide
Table 2-4: TTL Inputs Timing Diagram 2
Timing of zero/cal inputs for condition “00”.
Time Description Value
T5 Maximum time between inputs going low. 100 ms
T6 Minimum overlap of low inputs. 200 ms
T7 Time between input detection and start of zero/cal
cycle. This is determined by the number of
averages x sample rate, or if there is an existing
zero/cal operation in progress, the time for this
current operation to complete. Note that the
worst case is 1024 averages x 50 ms = 51.2 s. For
front panel operation (in free run mode) the time
is 1 x 50 ms.
4 s
T8 Time for cal operation to complete. Cal: 6 s (8480 series)
7 s (E series)
All timings based on 100 ms firmware polling.
If both TTL inputs are simultaneously low under any circumstances other than those
shown above, the operation is undefined.
Inputs
Operation
T5
T6
T7
T8
HP4402.book Page 14 Wednesday, November 29, 2000 4:46 PM