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3.
Select special parameter 04. Set the recorder mode 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. When the sweep finishes, 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 continues 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
Sweep "Rate" of the 1053 in accordance with the Paper Speed using the following
relationship.
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 "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.
AO 0087
Level Recorder
2307
Remote Control
AQ 0035
Vibration Exciter
Control 1053
AO 0231
Vibration Exciter 4801
+
Head
Power Amplifier
2707
870419
Fig. 4.2. Vibration-test system using the Level Recorder Type 2307
for frequency response hard-copy
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