Solartron 1253A, Operating Manual

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[Chapter 2]
2.6
1253 Op Man_DA
4.4 CONNECTION PROCEDURE
1. Before connecting the supply, ensure that the mains voltage selector on the rear
panel is correctly set (Section 4.1), and that the fuses fitted in the mains input unit
are correctly rated (Section 4.2).
2. Ensure that the power on/off switch is ‘off’. This switch is located next to the
mains input unit on the rear panel.
3. Connect the mains lead.
4. Switch the 1253 ‘on’ at the rear panel.
5 REPLACING GENERATOR FUSES
Two 400mA fuses protect the 1253 Generator, one in series with the Hi output and one
in series with the Lo. If the Generator appears to be inoperative, before inspecting or
replacing these fuses, check the following points:
a. Is the Generator ‘on’? If not, press SINGLE or RECYCLE.
b. Are all connections with the system under test OK?
c. Is the Generator menu set correctly, with the Amplitude parameter non-zero?
Refer to Chapters 3 and 5 for procedure.
d. Is the START/STOP input on the rear panel being held low?
e. Disconnect the 1253 from the system under test. Set up a measurement and
confirm the Generator is inoperative by monitoring the output with an oscilloscope
or suitable voltmeter.
If none of these indicate a problem external to the Generator then one or more of the
Generator fuses may have failed. This may be because the Generator output has been
subjected to a large external voltage in the system under test. Refer to Chapter 12:
Specifications, for Generator capabilities.
To replace or inspect the fuses follow the procedure described in Section 4.1.