25
Taking measurements
Measuring the cell of a base station
¤
Temporarily secure the measuring base station in the position in which the base sta-
tion is to be installed.
¤
Establish a telephone connection between the two measuring handsets or activate
the continuous test tone of the measuring base station (
¤
Move away from the base station with the handset, observing the display and the sig-
nal in the earpiece, until the limit value of –65 dBm is displayed or a wireless transmis-
sion boundary is reached (e.g., lift, exterior wall). Transfer this point to your plan and
enter the value in the measurement log.
¤
Use this method to determine the border line around the base station. The theoretical
ideal case of a ring-shaped transmission is considerably altered in reality by walls
(depending on the construction material) and metal furnishings.
¤
Check the voice quality in the limit areas using the connection to the second measur-
ing handset or the measuring tone of the base station.
¤
Enter deviations in the reception signal measurement of the voice quality in the layout
plan or the measurement log.
Example of a measurement log for the cell of a base station
Measuring point
Base station A
1
–60 dBm/100%
2
–65 dBm/98%
. . .
. . .
. . .
. . .
9
–73 dBm/70%
WC/
store
Stairs
Computers
1
2
9
A
B
C
D
E
VoIPon www.voipon.co.uk [email protected] Tel: +44 (0)1245 808195 Fax: +44 (0)1245 808299
