@X4-0047-5
- 11 -
5. How to Operate
5.1. Preparation before power-on
1. Check that the power switch
①
is "OFF" ("
○
" side).
2. Set the high voltage switch
⑥
to "OFF".
3. Connect the supplied AC power cable to the AC power inlet
⑨
on the rear panel.
4. Plug the AC power cable into a 3-slot AC power outlet.
If connecting to a 3-prong AC outlet is not possible, use the supplied 3P/2P converter plug and
securely ground the unit by using the grounding lead coming out of the 3P/2P converter.
5. Connect the supplied high-voltage output cable (E1168-19 etc.) to the SHV high-voltage
output receptacle
④
on the rear panel, and then connect that cable to a load.
When the above preparation is complete, set the power switch
①
to "ON" ("
┃
" side).
Check that the LCD panel
③
shows the following initial screen.
-
0 V
O F
F
e
t
c
.
1 0 0
0 V m a x
.
R
e
s
e
t
CAUTION
If the power switch is turned ON while the high voltage switch is "ON" the LCD panel shows the
following message, and the high-voltage output switch LED flashes.
P l e a
s e
t u
r
n
o
f
f
H V _ O
U T
s w
i
t
c
h
!
In this state, the high voltage output is 0V, and the panel keys and PC are inoperable. To clear
this state and display the initial screen, press the high voltage output switch to turn it OFF.
When using a high-sensitivity device such as a photomultiplier tube, avoid sharply increasing the
high voltage. For example, first presetting the voltage to within 500 V, turning on the
high-voltage output switch, and then slowly increasing the voltage is recommended in order to
protect the device.
Likewise, when turning off the high voltage output, first reducing the high voltage to 500 V is
recommended.
If the high-voltage output current exceeds 2 mA or the output is shorted, the protective circuit
functions to lower the output voltage. In this case, immediately turn off the high voltage and
then adjust the load so that the output current falls below 2 mA.