Distance - Siemens BT 200 Mode D'emploi

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BT 200

4.4 Distance

Distance measurement can only detect lines
longer than 15 m. No distance measurement
can be performed when repeaters are used.
Performing the test
Turn off the power supply of all bus stations.
Connect test plug connector to one end of the
line and the BT 200 to the other end. (Turn
off resistor for BT 200.)
Start distance measurement.
After the start, the BT 200 requests three va-
lues which must be entered on the keyboard.
Loop resistance (default = 110 Ω/km)
-
The default value can be changed via
menu item Service.
Number of 12-Mbaud plug connec-
-
tors/devices with longitudinal inductivity
Resistance value per connector/device
-
(default = 0.32 Ω)
After entry of the last value and confirmation
with OK, measurement is performed.
Measurement results
The following appears on the display.
The following error messages can occur du-
ring measurement.
No resistor inserted.
-
Display "0 m" (no plausible length deter-
-
mined)
More than 1 resistor inserted.
-
Possible causes of errors:
- Distance < 15 m
- Stub lines, located on the measuring path
Correct the error, and repeat the measure-
ment.
(S)J31069-D0075-U001-A2-6318
04/00 English
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