Yokogawa µR20000 - Manual (Page 26)

3-13 SM 04P01B01-01E
Testing
3
Keys
● Procedures
1. Turn ON the power switch while pressing the
MENU
and
CH UP
keys. Menu = A/D
Adjust is displayed.
2. Select Menu = Test, and press the key.
3. Choose Test = Key and press the key.
Confirm that the appropriate box turns On or OFF when each key is pressed.
The box of the display corresponds to the order of the keys.
Press the
ESC/?
key twice to return to the Test = Key screen.
Enter 2 ESC, Out.
* Select using the key. You can hold down the SHIFT key while pressing key to reverse the
key’s action.
Power Supply Frequency Detection
● Procedures
1. Turn ON the power switch while pressing the
MENU
and
CH UP
keys. Menu = A/D
Adjust is displayed.
2. Select Menu = Test, and press the key.
3. Choose Test = Frequency and press the key.
The detected power supply frequency is displayed. Confirm that it matches the
actual power supply frequency.
Frequency
50.0Hz
* Select using the key. You can hold down the SHIFT key while pressing key to reverse the
key’s action.
Battery Backup
● Procedures
1. Set the date and time on the recorder. Also, set an arbitrary channel to the 20
mV range.
2. Turn OFF the power switch.
3. Turn ON the power after approximately one minute, then check that the set
date, time, and range are not initialized.
3.4 Test Procedures