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Operating Instructions
1–2
1503C MTDR User Manual
The 1503C is intended to be operated from a power source that will not apply more
than 250 V RMS between the supply conductors or between either supply conductor
and ground. A protective ground connection by way of the grounding conductor in
the power cord is essential for safe operation.
The AC power connector is a three-way polarized plug with the ground (earth) lead
connected to the instrument frame to provide electrical shock protection. If the unit
is connected to any other power source, the unit frame must be connected to an earth
ground. See Safety and Installation section.
CAUTION.
If you change the voltage selector, you must change the line fuse to the
appropriate value as listed near the fuse holder and in the table below.
FUSE RATING
VOLTAGE RATING
250 V
NOMINAL RANGE
0.3 A T
115 VAC (90 – 132 VAC)
0.15 A T
230 VAC (180 – 250 VAC)
CAUTION.
Read these instructions concerning the care of the battery pack. They
contain instructions that reflect on your safety and the performance of the
instrument.
The 1503C can be powered by a rechargeable lead-gel battery pack that is accessible
only by removing the case from the instrument. When AC power is applied, the
battery pack is charged at a rate that is dependent on the battery charge state.
The battery pack will operate the 1503C for a minimum of eight continuous hours
(including making 30 chart recordings) if the LCD backlight is turned off.
The battery pack will charge fully in 16 hours when the instrument is connected, via
the power cord, to an AC power source with the instrument turned off. The
instrument may be turned on and operated while the batteries are charging, but this
will increase the charging time. For longest battery life, a full charge is preferred
over a partial charge.
For maximum capacity, the batteries should be charged within a temperature range
of +20
°
C to +25
°
C. However, the batteries can be charged within a temperature
range of 0
°
C to +40
°
C and operated in temperatures ranging from –10
°
C to +55
°
C.
Care of the Battery Pack
Battery Charging
Summary of Contents for 1503C
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Page 92: ...Appendix A Specifications A 6 1503C MTDR User Manual...
Page 104: ...Appendis B Operator Performance Checks B 12 1503C MTDR User Manual...
Page 122: ...Glossary Glossary 6 1503C MTDR User Manual...
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