2.0 Safety and Preparation for Use
Page 2
The PPS-2RM-B was designed for indoor use only and is not intended for operation
outdoors or in a wet environment. The instrument may be mounted in a standard 19-inch
instrumentation rack or may be used on a laboratory bench. Inspect the instrument and
power cords for damage before first use.
2.1 Electrical safety and preparation for use.
Voltages capable of causing injury or death are present in this instrument. Use
extreme caution whenever the instrument cover is removed.
Line Voltage
This instrument is designed to operate with a 100 to 240 VAC, 47 to 63 Hz power source.
This instrument is also capable of operating with a DC power source that can 12
to +36 VDC at 2 Amperes when the DC option is acquired.
Fuse
A 1.0 Ampere 250V 5X10mm slow-blow fuse is used for 100 to 240 VAC operation.
A 2.0 Ampere 250V 5X10mm slow-blow fuse is used for DC power operation.
Only replace fuses with the same type and specifications.
AC Power
The instrument has a detachable three wire power cord for connection to a grounded AC
power source. The enclosure of the unit is directly connected to the outlet ground to
protect against electrical shock. Always use an outlet with a protective ground and do not
disable this safety mechanism. Detaching the AC power cord is the only option of
disconnecting the unit from the AC mains supply. Make sure you have access to the rear
panel or provide an external accessible AC disconnect means for your PPS-2RM-B.
DC Power
The PPS-2RM-B may be acquired with a DC power option to allow the instrument to be
powered by +12 to +36 VDC, 2 Amp source. The DC supply operation may be used as
backup power to prevent loss of signal during power outages or as a mains supply source.
The switching from AC to DC supply operation is affected by a Schottky diode network and
charge storage capacitors to ensure glitch free operation.
If the PPS-2RM-B was acquired with the DC operation option
a 6 pin DC connector will be
available on the back panel.
