Turning the Power Switch On and Off
Before Turning On the Power, Check That:
• The instrument is installed properly (see section 3.2, “Installing the Instrument”).
• The power cord is connected properly (see page 3-12).
Turning the Power Switch On and Off
Flip the power switch on the left side panel to ON (|) to turn the instrument on, and to OFF ( ) to turn
the instrument off.
Turning ON/OFF the DC Power (/DC)
Before Turning On the Power, Check That:
• The instrument is installed properly (see section 3.2, “Installing the Instrument”).
• The power cord is connected properly (see page 3-12).
Turning the Power Switch On and Off
Flip the power switch on the left side panel to ON (|) to turn the instrument on, and to OFF ( ) to turn
the instrument off.
Note
If AC power is supplied and the main power switch to the AC power is ON, AC power is used.
Status Display of the DC Power Supply
The power supply status is indicated on the LED on the left side panel.
AC LED
LED Status Description
Illuminated in green Operating on AC power
DC LED
LED Status Description
Illuminated in green Operating on DC power (AC power is not connected)
Operating on AC power, and the DC supply voltage is within the operating range (10
to 18 VDC)
Illuminated in red Operating on DC power, and the DC supply voltage is outside the operating range
Illuminated in orange DC power is turning ON/OFF repeatedly (internal protection circuit is tripping)
Power is not supplied in this condition. This status is automatically cleared after 10
to 20 seconds.
Blinked in red Internal circuit operation failure. Repair is necessary.
Off Operating on AC power, and the DC supply voltage is within the operating range (10
to 18 VDC) or the DC power is not supplied
3.4 Connecting to a Power Supply and Turning the Power Switch On and Off
3-15
IM DL850E-03EN
Making Preparations for Measurements
3
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