Changing The Ac Supply Fuse; Using An Optional Dc Power Supply - R&S ESR Series User Manual

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R&S ESR
datasheet for the requirements of voltage and frequency. The AC power connector is
located on the rear panel of the instrument.
► Connect the R&S ESR to the AC power supply using the supplied power cable.
Since the instrument is assembled in line with the specifications for safety class
EN61010, it may only be connected to an outlet that has a ground contact.
3.2.1.5

Changing the AC Supply Fuse

Only fuses of the type IEC 60 127-T6.3H/250 V should be used. Those fuses are used
for all of the specified nominal AC supply voltages.
Changing the AC supply fuses:
1. Disconnect the power cable.
2. Open the flap covering the voltage selector using a small screwdriver (or similar).
3. Remove the cylinder labelled with the nominal voltages. Remove both fuses and
install the new ones. Reinsert the cylinder so that the value visible through the hole
in the cover flap is the same nominal voltage as before.
4. Close the flap.
3.2.1.6

Using an Optional DC Power Supply

When only DC power is available, for example from a battery or in a vehicle, an
optional DC power supply adapter (R&S FSV-B30) can be connected to the R&S ESR
to operate the instrument with a DC voltage of 10 V to 28 V.
For installation instructions see the option's installation guide.
Shock hazard due to power supply
If you use external power supplies to supply the equipment with DC safety extra low
voltage (SELV), make sure the requirements for reinforced or double insulation are
met, according to DIN/EN/IEC 61010 (UL61010, CAN CSA C22.2 No. 61010) or
DIN/EN/IEC 60950 (UL60950, CAN CSA C22.2 No. 60950). Otherwise you may be
injured due to electrical shock.
Before switching on the R&S ESR, switch on the DC power supply:
User Manual 1175.7068.02 ─ 12
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