Chapter 3 Functions and Operations

Range Errors

A listing of Range Error messages is given in Table 3-3.

Table 3-3.Range Error Messages (1 of 2)

Error Message

Description

 

 

RANGE

The start (F1) frequency is greater than the stop (F2) frequency.

ERROR:F1 > F2

 

 

 

 

RANGE

The start (D1) distance is greater than the stop (D2) distance.

ERROR:D1 > D2

 

 

 

 

RANGE

The stop distance (D2) exceeds the maximum unaliased range. This

ERROR:D2 >

range is determined by the frequency span, number of points,

DMax=xx.x m (ft)

and relative propagation velocity:

 

 

 

 

(1.5 ￿ 108) (dp) (V f )

 

MaximumUnaliased Range ￿

 

 

(meters)

 

F2 ￿

 

 

 

F1

 

Where: dp is the number of data points (128, 256, or 512)

 

Vf is the relative propagation velocity

 

F2 is the stop frequency in Hz

 

 

 

F1 is the start frequency in Hz

 

 

 

Maximum Unaliased Range is in meters

 

Refer to Figure 3-16,page 3-27,for a plot of maximum range versus

 

frequency span.

 

 

RANGE ERROR:

The SWR scale parameter top value is less than or equal to its bottom

TOP<=BOTTOM

value.

 

 

RANGE ERROR:

The RL scale parameter top value is greater than or equal to its bottom

TOP>=BOTTOM

value.

 

 

CAL

A complete open, short, and load calibration or a complete open,

INCOMPLETE

short, load isolation and thru calibration must be performed before

 

calibration can be turned on.

 

 

DIST REQUIRES

Valid distance to fault plots require a non-zero frequency span.

F1 < F2

 

 

 

 

DIST REQUIRES

Distance-to-fault measurements do not provide usable data with CAL

CAL

OFF.

 

 

NO STORED

Attempting to recall a display from a location that has not been previ-

SWEEP AT THIS

ously written to. That is, the location does not contain stored sweep.

LOCATION

 

 

 

 

USE OPTIONS

Attempting to print a display with no printer selected. Select a printer,

MENU TO

then retry.

 

 

SELECT A

 

 

 

 

PRINTER

 

 

 

 

DISTANCE AND

DTF measurements only display RL or SWR versus distance.

CABLE

 

 

 

 

INSERTION LOSS

 

 

 

 

MODE ARE

 

 

 

 

INCOMPATIBLE

 

 

 

 

CANNOT ZERO

Attempting to perform a Power Monitor zero adjust function with no

NO DETECTOR

RF detector connected to the Site Master.

 

 

INSTALLED

 

 

 

 

3-25

Page 43
Image 43
Anritsu S251B manual Range Errors, ERRORD2

S251B specifications

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