PR8111、PR8112_user_manual_eng_20191015H.pdf - 第28页

3.2 Ba sic Measure ment 25 1 St art Me asureme nt 1 Move the ZERO/MEAS switch to th e MEAS position. The pens will move in resp onse to in put signa ls. 2 Move the ST ART/STOP/FEED switch to the ST ART posit ion. Paper w…

3.2 Basic Measurement

Select a Measurement Range (RANGE)

1 Select the units with the mV/V switch.

2 Rotate the RANGE knob to select the desired range.

You can select the best range for the voltage you intend to mea-

sure. The range can be set from ±1 mV to ±250 V. The 500 set-

ting is used exclusively for mV ranges.

Do not set the RANGE knob to 500 while the mV/V

switch is set to V.

Move the Pen Position (POSITION)

1 Move the ZERO/MEAS switch to the ZERO position.

2 Rotate the POSITION knob to set the pens’ zero points.

You can adjust the pen zero point and move the pen position.

You can set the zero point (0 V position) by moving the ZERO/

MEAS switch in the ZERO position.

Example: When using the ±1 mV range, centering the zero point

allows you to measure from -1 mV to +1 mV, while placing it at

the leftmost edge allows you to measure from 0 V to +2 mV.

Set the Paper Feed Speed (CHART SPEED)

You can set the paper feed speed according to the desired recording

time. This setting can be changed while recording is in progress.

1 Select the speed unit with the h/min switch.

• mm/h: Amount of paper feed per hour [mm]

• mm/min: Amount of paper feed per minute [mm]

2 Rotate the CHART SPEED knob to select the desired

speed.

(Example: 300 mm/h)

Lower the Pens (pen lever)

Place the pen lever in the DOWN (bottom) position

to lower the pens.

3.2 Basic Measurement

Start Measurement

1 Move the ZERO/MEAS switch to the MEAS position.

The pens will move in response to input signals.

2 Move the START/STOP/FEED switch to the START position.

Paper will be fed through the instrument, and recording will start.

Stop Measurement

1 Move the START/STOP/FEED switch to the STOP position to

stop feeding paper through the instrument.

Paper will stop moving through the instrument.

2 Place the pen lever in the UP (middle) position to raise the

pens.

Remove the Recording Paper

If you’re using fanfold paper, tear off the paper along the perforated line.

To feed paper through the instrument

You can use the START/STOP/FEED switch to feed paper through the in-

strument.

Moving the switch to the FEED position causes paper to be fed

through the instrument. There are four feed speeds. When you

press and hold the switch in the FEED position for at least 2

seconds, the feed speed will increase.

Cap the Pens

Lift each pen toward you and cap it.

3.3 Using Only One channel (PR8112 Only)

When using only CH1, you can limit the instrument’s power consumption to the power necessarily to

drive one channel by setting the CH2 POWER switch on the rear of the instrument to OFF, thereby

turning off the CH2 power supply. When powering the instrument with batteries, doing so will

lengthen the batteries’ service lifetime compared to when the CH2 POWER switch is ON.

3.3 Using Only One channel (PR8112 Only)

Move the CH2 POWER switch on the rear

of the instrument to the OFF position.

Only the CH1 pen will operate.

Cap the CH2 pen before starting measure-

ment. Taking measurements with the CH2

pen uncapped may cause the position of

the CH2 pen tip to be recorded on the re-

cording paper.