E-20
10
Replacing the Backlight
9
Input/Output Signal Line Cautions
•
Input and Output signal lines must be separated from the power control cables
for operational circuits.
•
If this is not possible, use a shielded cable and the shield should be grounded.
• To improve noise immunity, it is recommended to attach a ferrite core to the
power cord.
Using any backlight other than the model written above may
cause an accident or PS-A unit malfunction.
© 2003 Digital Electronics Corporation. All rights reserved
8
Grounding Cautions
•
When attaching a wire to the PS-A's bottom face FG terminal, (on the AC
Connector), be sure to create an exclusive ground.
*1
•
FG and SG terminals are internally connected in the PS-A. When connecting to
another device, be sure to create an SG shorting loop in your system.
*1 Use a grounding resistance of 100
Ω
, a wire of 2mm
2
or thicker, or your country's
applicable standard.
•
Input and Output signal lines must be separated from the power control cables
for operational circuits.
•
To increase the noise resistance, be sure to twist the ends of the power cord
before connecting it to the PS-A unit.
•
The PS-A unit's power cord should not be bundled with or kept close to main
circuit lines (high voltage, high current), or input/output signal lines.
•
Connect a surge absorber to handle power surges.
• Ground the lightning surge absorber and the PS-A separately.
• Select a lightning surge absorber which will not exceed the allow-
able circuit voltage, even when the voltage rises to the maximum.
•
To reduce noise, make the power cord as short as possible.
Note
Be aware that the Digital Electronics Corporation shall not be held liable for any real or
estimated damages or losses, or third party claims resulting from the use of this product.
The PS-A unit's backlight is user replacable. For an explanation of how to replace
the PS-A's backlight, please refer to the Installation Guide which comes with the
replacement backlights (sold separately). The corresponding backlight is CA3-
BLU15-01.
