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3.
Select Special Parameter 04. Set the Recorder Mode Control to "0" for mode 1, or
to "1" for mode 2 (refer to section 7.2).
Mode 1 sets the pen down and starts the paper drive of the 2307 when the sweep is
started. At the sweep stop the pen is lifted and the paper drive will stop. This mode
should be used for linear (or log) recording on non frequency graduated paper over
any chart length.
Mode 2 provides pen down/up control and starts the paper drive when the Sweep
Control "Up" key is pressed. When the sweep reaches its upper limit, the pen is
lifted and the paper drive will continue running to the set automatic stop. This mode
is suitable for recording on logarithmically graduated charts of 250 mm length.
4.
Set the Paper Drive Function to "Continuous F" and Paper Drive to "Start".
5.
To synchronize logarithmically graduated paper with the frequency sweep, set the
1050 Sweep "Rate" in accordance with the Paper Speed using the following rela-
tionship:
s
60
Sweep "Rate"
=
Oct/min
A log2
~
20
~
S Oct/min
S
=
Paper Speed (in mm/s)
A
=
Decade length (in mm) of the paper in use
6.
If Recorder Mode Control "2" is used, set the Automatic Stop to the lower sweep
limit.
7.
Adjust the recording paper so that the pen is directly above the lower sweep limit.
8.
Press the Generator Output "Operate" key and start the sweep.
Measuring
Amplifier
2610
Level Recorder
2307
Vibration Exciter 4801
+Head
~F· =:~
.___.,..__--I
f® --; ; ;
~,
·
.-·®
;.;
....... --=-----...-....__.
Vibration Exciter Control
1050
Power Amplifier
2707
86
11
61
Fig. 4.2. Vibration test system using the Level Recorder Type 2307
for frequency response hard copy
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