Fluke 5725A - Manual (Page 64)

5725A
Instruction Manual
3-8
3-4. Turning on the 5725A Amplifier
Warning
To avoid electric shock, make sure the 5725A is safely
grounded as described in section 2.
Caution
Before turning the 5725A on, make sure that the line voltage
selection switches are set properly for your line voltage. Refer
to Figure 2-3 or the line voltage switch label and check the line
voltage setting now if you have not already done so.
When you turn on the 5725A, all six front panel indicators light briefly and the 5725A
undergoes a self test. If the self test fails, a fault message on the 5700A Control Display
identifies the failure, indicating that you should service the 5725A.
After the 5725A passes its self test, it transfers its calibration constants to the 5700A.
During the transfer, the BOOST indicator on the 5700A flashes. For the few seconds that
the BOOST indicator is flashing, the 5725A is not usable. After the transfer is complete,
the 5725A is in standby mode. (See "5725A Operating Functions and Modes" for more
information about standby mode.)
3-5. Warm Up
When you turn on a cold 5725A, warm it up for 30 minutes to allow the components
inside to stabilize. This ensures that the 5725A meets or exceeds the specifications listed
in Section 1.
If you turn off the 5725A after it has warmed up, allow it to warm up again for at least
twice the length of time it was turned off (up to a maximum of 30 minutes of warm-up).
For example, if the 5725A is turned off for 10 minutes, allow it to warm up again for at
least 20 minutes.