Level Recorder Type 2307 - BRUEL & KJAER 1050 Instruction Manual

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
1 050, 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- Y 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 1050 is in "Stand-by", press Generator "Frequency" and Sweep
Control "Down". This sets the frequency control 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 frequency control 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 1050.
To remotely control the 2307 from the 1 050, 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 2307 Instruction Manual for paper loading instructions.
2. Connect the 1050 Level Recorder socket to the 2307 Remote Control socket using
cable AQ 0035.
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