Table of Contents
Advertisement
b) Using the 50 mV RMS signal provided in the 2010, note the differ-
ence in dB between the calibration signal (see section 3.2.3) and
the full scale deflection. The pen should be set to this number of
dBs below a thick line. This line then represents the maximum
deflection of the scale used (10 gin the example in section 3.2.3).
VOLTAGE
The 50 mV RMS signal provided in the 2010 corresponds to 6 dB
below full scale deflection for a meter range of 100 mV. The pen
should be set to 6 dB below the upper thick line on the recording
paper. This line will then correspond to 100 mV.
Note: The values given to the reference lines only apply provided the
positions of the attenuators of the 2010 and Level Recorder are not
changed. However if the attenuator settings are changed, the value of
the reference line is changed by the corresponding number of dB.
5. Two types of recording can be made.
a)
CONTINUOUS RECORDING
1. With the Type 2305. For recording over any chart length the
GEAR LEVER on the 2305 can be in either position. When the
lever is "In", the required paper speed may be set using the large
figures around the PAPER SPEED selector. When the lever is
"Out" the small figures apply.
To start the paper moving, first set the PAPER DRIVE switches to
"Stop", and "Forward". Then depress the SINGLE CHART/
CONT. RECORD push-button and turn clockwise to lock in. To
stop, release the push-button.
2. With the Type 2307. For recording over any chart length with the
2307, the PAPER SPEED switch can be in either position (em/sec.,
or mm/sec.) and the figures around the PAPER SPEED selector
apply to both positions.
To start the paper moving, first set the PAPER DRIVE FUNC-
TION selector to "Continuous, F", and then press the PAPER
DRIVE, "Start" push-button. To stop, press the PAPER DRIVE,
"Stop" push-button.
65
Advertisement
Table of Contents
