Quick Installation Guide

Quick Installation Guide
Document
WERA4-Quick-US-200918
Page 53 of 73
7.1.20 Cycle Repetition Time
The Cycle Repetition Time field is used for continuous measurements.
It is a repetition time in minutes. Examples:
- 01 - Repeat a measurement cycle every 1 minutes
- nn - Repeat a measurement cycle every nn minutes
- 60 - Repeat a measurement cycle every 60 minutes
Remarks
The Cycle Repetition Time must be larger than the Data Acquisition Time.
Only for permanent mode a shorter time may be entered. In that case the software will automatically
adapt the amount of samples to fit into the cycle repetition time.
If the frequency pre-scan or DPT option is used, then the Cycle Repetition Time must be larger than the
Data Acquisition Time plus 2 minutes.
The measurement cycles will be reset at the end of each hour. So if equidistant measurement times are
desired, then 60 minutes should be dividable by the cycle repetition time.
7.1.21 Number of Range Cells
A value between 32 and 256 needs to be selected.
By multiplying the number of range cells with the range cell depth in meters, the
maximum processed range in meters can be obtained.
This value depends on the range cell depth, and on the real range of first order Bragg
lines of the station.
If this value is configured too small, then the Bragg lines will be cut and data is lost for
far ranges.
If this value is configured too large, then the data files will grow in size without getting
more information. This can rapidly fill up your data disk.
Remarks
- The Number of Range Cells should not be set to values larger than the working range physically
possible by WERA due to the attenuation of the ground wave.
- This value should be monitored and readjusted after having installed the system.
- If the option “bandwidth reduction” is used, then the amount of range cells may vary from
measurement to measurement.
7.1.22 Maximum Range
The value of this field is calculated by multiplying the Range Cell Depth with the
Number of Range Cells.
Can’t be modified.