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c
-10dB.---.-----.---.----.-----.---.---,.----.----.---.
0
"E=
~~
OE
0"'
"§§-20dB~--+---~~--~~-+----~--~----~--~~--r---~
§"":
~!
2
10
20
50
100
200
500
1k
2k
Frequency Hz
171504
Fig.3.4.
Typical distortion curves for various compressor speeds
3.8. REMOTE CONTROL
3.8.1. Frequency Control
1.
Select the position "Ext. Volt." on the SWEEP CONTROL.
2.
A DC control voltage (between 0 and 1 0 V) is applied to pin 7 of the FREQUENCY
CONTROL VOLTAGE "In" socket, see Fig.2.6 (see also section 4.8).
3.
The remaining controls on the 2010 are selected as appropriate to the measure-
ment being made.
Note:
If a 8 & T programme is not used, the 8 & T PROGRAM selector should be in
the "Manual" position.
3.8.2. B & T Programmes
Remote control of a B & T programme is possible only when the frequency control vol-
tage itself is provided by an external voltage
.
In this case, the procedure is as follows:
1.
The frequency is controlled according to section 3.8
.
1.
2.
Position the frequency scale pointer in the passive zone.
3.
Choose a suitable programme using the three selectors 8 & T PROGRAM, SELECTIV-
ITY CONTROL, and EFFECTIVE AVERAGING TIME.
4
.
Using the EXT
.
8 & T PROGRAM socket on the rear panel, ground the pin appropri-
ate to the desired range.
35
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