Fluke instruction manual Turning on the 5725A Amplifier, Warm Up

5725A

Instruction Manual

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.

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