4. Before You Begin Measuring
4-2
4.2
Preparing the Power Supply
4.2.1
Attaching the DC Power Cord
The DC power supply input connector and its pin assignments are shown below. Apply +12
V to pin 4 shown in the figure below.
When the LV 5330 is connected to the DC power supply, the internal microcomputer is in
standby mode and some power is consumed even if the power switch is turned off. If you
do not intend to use the LV 5330 for an extended period of time, disconnect the DC power
supply.
Figure 4-5 DC power supply input connector
Table 4-1 DC power supply input connector pin alignment
Pin No.
Pin Name
1 GND
2 NC
*
3 NC
*
4 +12
V
*
Do not connect anything to this pin.
The operating supply voltage range of this instrument’s DC power supply is 10 to 18 V. Do
not apply a voltage that exceeds this range. Doing so may damage the instrument or lead
to fire.
4.2.2
Turning On the Power
To turn on the power, press the power switch on the front panel. The LED next to the power
switch lights when the power is on.
When you turn on the power, the LV 5330 starts up with the same panel settings that were
set when it was last turned off. However, the error counter and event log in the status
display are cleared.
4.2.3
Turning Off the Power
To turn off the power, hold the power switch on the front panel for one second or more. The
LED next to the power switch turns off when you turn off the power.
WARNING
