4-58
4.2 Operation and features
SPM-32A ... SPM-36A
n*10 dB + ...
Example: Result = -23.5 dB:
-20 dB -3.5 dB
4.2.6.2
Display averaging (AVRG)
The instrument has an averaging facility for rapidly
fluctuating signals. It can be switched on and off by entering
the following sequence:
The averaging facility has the following effects:
– The time constant of the rectifier is increased
– The current level shown by the display is calculated using
the following formula:
Display value = (7 x old value + new value)/8
– The display resolution increases from 0.1 dB to 0.01 dB.
. . .
-10 -9 -8 -7 -6
-5 -4 -3 -2 -1
0 dB
= = = =
.
;
= = = =
.
.
= = = =
.
.
= = = =
;
.
= = = =
.
.
= = = =
.
;
= =
.
= = = =
.
;
= = = =
.
.
= = = =
.
.
= = = =
;
.
=
.
.
.
;
.
*
AVRG
8
Summary of Contents for SPM-32A
Page 1: ...SPM 32A SPM 36A Selective Level Meters Operating Manual BN 4033 00 82 ...
Page 2: ......
Page 16: ...2 Safety information SPM 32A SPM 36A 2 4 Notes ...
Page 118: ...5 10 Ordering information SPM 32A SPM 36A 5 20 ...
Page 122: ......
