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If the X-Y Recorder Function Selector is set to "Servo On", then the pen position is
controlled by the X and Y signals. The pen up/down is controlled by the Sweep Control
functions. The 2308 will produce a frequency sweep hard copy when Generator Output
"Operate" is pressed followed by Sweep Control "Up" or "Down".
To calibrate the horizontal pen deflection of the 2308 with the frequency sweep of the
1 053, proceed as follows:
1. Place a piece of preprinted graph paper on the paper platen and carefully align it,
preferably with its bottom and left hand edges flush with the bottom and left hand
edges of the platen.
2. Turn the Function Selector one position clockwise to activate the electrostatic pa-
per hold, and smooth out the paper flat against the platen, taking care not to alter
its alignment.
3. Set the X-Sweep switch of the 2308 to "Ext", and Polarity to "Norm".
4. Set the Range as required for use with the chosen paper.
5. Set the X-V Sensitivity (special parameter 03) to "0" for logarithmic frequency con-
trol, or
"1"
for linear frequency control of the 2308 X-axis.
6. Set the Function Selector to "Servo On"
7. Ensure that the 1053 is set to "Stand-by", press Generator "Frequency" and Sweep
Control "Down". This sets the generator frequency to the sweep lower-limit.
8. Adjust the X-Zero Set of the 2308 so that the pen is positioned directly over the
appropriate graduation on the paper which corresponds to the sweep lower-limit.
9. Press Sweep Control "Up". This sets the generator frequency to the sweep upper
limit.
10. Adjust the X-Gain of the 2308 so that the pen is positioned directly over the appro-
priate graduation on the paper which corresponds to the sweep upper-limit.
11. Repeat steps 7 to 10 until frequency control is synchronized with the paper.
12. Press "Operate" followed by Sweep Control "Up" or "Down" to activate an auto-
matically-documented frequency sweep.
4.1.2. Level Recorder Type 2307
For hard copy of vibration test responses, an instrument arrangement similar to that
shown in Fig. 4.2 can be used. This makes use of the Level Recorder Type 2307, which
is remotely controlled, including start/stop and pen up/down functions, by the 1053.
To remotely control the 2307 from the 1 053, proceed as follows:
1.
Fit the Level Recorder with a roll of preprinted paper suitable for recording. Use
QP 0102 for a linear frequency sweep, or QP 0120 for a logarithmic frequency sweep.
Refer to the instruction manual of the 2307 for paper loading instructions.
2~
Connect the Level Recorder socket of the 1 053 to the Remote Control socket of the
2307, using cable AQ0035.
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