User’s
Manual
IM MT300-71EN 1/12
1st Edition
1st Edition : January 2020 (YMI)
All Rights Reserved, Copyright © 2020, Yokogawa Test & Measurement Corporation
Printed in Japan
MT300 Digital Manometer
D/A Output, Voltage/Current
Measurement Adjustment Method
This instrument should be adjusted by a qualified engineer at a qualified facility with sufficient precision. The
adjustment feature of this instrument can be used to adjust the D/A output and voltage/current measurement.
The adjustment values are retained even when the instrument is initialized, but they may be reset if the
instrument is adjusted at a YOKOGAWA factory. If you need to adjust the instrument more than that is possible
with the adjustment feature or if you want calibration and adjustment to be performed at a YOKOGAWA factory,
contact your nearest YOKOGAWA dealer.
Applicable Conditions
The following options are installed in the MT300.
• D/A output adjustment: /DA option
• Voltage/current measurement adjustment: /DM option
Equipment Used
• Digital multimeter
3458A (Keysight) or equivalent
• Standard DC voltage/current source GS200 (YOKOGAWA) or equivalent
• Standard resistor (100Ω)
2792A06 (YOKOGAWA) or equivalent
Each piece of equipment must be calibrated and with sufficient precision.
Adjustment Procedure and Conditions
• Ambient temperature 23°C ± 3°C; humidity 35%RH to 75%RH; at least 30 minute warm-up
• Supply voltage fluctuation tolerance: 90 VAC to 132 VAC or 180 VAC to 264 VAC
Power frequency fluctuation tolerance: 47 Hz to 63 Hz
• Use the default settings for settings that are not specified.
Procedure
Switching to Adjustment Mode
1.
Press
MENU
. The top menu appears.
2.
Press the
Utility
soft key, the
Next
soft key, and then the
Next
soft key. The following menu appears.
3.
Press the
Maintenance
soft key. The Maintenance menu appears.
4.
Press the
Calibration
soft key. A password input screen appears.
5.
Use the
arrow
(▲, ▼, ◄, and ►) keys to enter the password “1111.”
