User manual

Section 15: Calibration Series 3700 System Switch/Multimeter Reference Manual
15-2 3700S-901-01 Rev. C / July 2008
Environmental conditions
Conduct the verification procedures in a location that has:
An ambient temperature of 18°C to 28°C (65°F to 82°F)
A relative humidity of less than 80%, unless otherwise noted
Warmup period
NOTE At the factory, units are calibrated without any switch cards installed
and all slots are covered with blank slot covers. The slot covers come
installed on the unit when it is shipped.
If it is more convenient to calibrate the unit with switch cards installed,
make sure all channels are open and any empty slots are covered
with blank slot covers.
Allow the System Switch/Multimeter to warm up for at least two hours before
performing calibration.
If the instrument has been subjected to temperature extremes (those outside the
ranges stated in Environmental conditions (on page 14-2)), allow extra time for
the instrument‟s internal temperature to stabilize. Typically, you need to allow
one extra hour to stabilize a unit that is 10°C (18°F) outside the specified
temperature range.
Also, allow the test equipment to warm up for the minimum time specified by the
manufacturer.
Line power
The Series 3700 requires a line voltage of 100V to 240V (±10%), and a line
frequency of 50Hz or 60Hz.
NOTE The instrument automatically senses the line frequency at power-up.