Section 2: S540 site preparation and installation
S540 Power Semiconductor Test System Administrative Guide
2-20
S540-924-01 Rev. D / January 2019
Severe personal injury or death due to electric shock or electrocution or equipment damage
may occur if you do not have the correct circuit amperage.
S540 systems that are configured to operate between 100 VAC and 120 VAC must use a 20 A
circuit; systems that are configured to operate between 200 VAC and 240 VAC must use a
15 A circuit.
System power dissipation
The total power dissipated by the S540 depends on the type and number of instruments in the test
system. The power distribution unit (PDU) limits the incoming power to these instruments.
Though the PDU ensures electrical safety and compliance to the required standards, it does not
prevent the system from overheating.
When a Series 2600B or 2657A instrument detects an excessive heat condition, the instrument turns
the output off to minimize power dissipation. This safeguard prevents damage to individual Series
2600B and 2657A instruments, but may result in test instability. For instance, if you continuously
source more than 1 A from all the source-measure units (SMUs) for more than 100 seconds, it may
trigger a temperature error in one or more of the Series 2600B or 2657A instruments. However, an
average output of less than 1 A for an indefinite period will not cause a temperature error.
For additional information about the Keithley Instruments Series 2600B and 2657A SourceMeter
®
instruments, refer to the documentation at
Operating environment conditions
To ensure operation within specifications, the S540 must be operated inside of the following
environmental conditions.
Temperature
: 23 °C ±5 °C
Operating humidity
: 30% to 60% relative humidity, noncondensing, after a two-hour warm up time
Vibration
: High ambient vibration levels may require isolation pads or the repositioning of equipment
Air quality
: The S540 system is compatible for use in a Class 10 clean room
Audible system noise
: Decibel level is 65 dBA in optimal environmental conditions
Airflow
: The S540 system is configured for top to bottom airflow
Altitude
: Less than 2000 m (6,561 feet) above sea level
