Doc No 93-0491-4
UNCONTROLLED COPY ONCE PRINTED
PAGE 14 OF 21
Type ‘slev’ into the parameter box of the ASI software.
Note down the signal level with the 20dB attenuator inline. Change the attenuator from 20dB to 30dB and
repeat. Then 30dB to 40dB, 40dB to 10dB, 10dB to no attenuator, checking on the spectrum analyzer that
the signal level is correct. Then the signal level correction is ready to be worked out.
The target signal level is:
Attenuator Value
Target Signal level
40dB
-58
30dB
-48
20dB
-38
10dB
-28
0dB
-18
Adjust the value of ‘levc’ and check each of the attenuator values to make sure that the target signal level has
been gained.
If the overall difference in signal level is +9dB across all the target signal levels, then type -
9.0 into the ‘levc’
parameter.
Note this down in section 4.5 of the build record.
