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NOTE
When removing the test head, loosen and disconnect the N-type connector connected to the
RF OUT terminal first.
NOTE
The N-type connector for the RF OUT terminal is mounted with a special design for
flexible movement to provide easier connection or removal of the test head.
Power Supply and Blown Fuses
Check the Power Supply
Confirm that the power supplied to the E4991A meets the following requirements:
Voltage
Frequency
Maximum power consumption
Verification and Connection of Power Cable
The three-wire power cable attached to the E4991A has one wire serving as a ground.
Using this power cable allows the E4991A to be grounded, thereby protecting you against
electrical shock from the power outlet.
Step 1. Confirm that the power cable is not damaged.
WARNING
NEVER use a power cable showing any sign of damage. Faulty cables can cause
electrical shock.
Step 2. Use the supplied cable to connect between the power terminal (Figure 2-10 on page 27) on
the rear panel of the E4991A and a three-wire power outlet with the grounding prong
firmly connected in the ground slot.
WARNING
Use the supplied power cable with grounding wire to securely ground the E4991A.
Figure 2-12 shows the power cable options.
Chapter 2
*1. Switched automatically by the E4991A in conformity to the voltage used.
Power Supply and Blown Fuses
Requirements
90 to 132 VAC or 198 to 264 VAC
47 to 63 Hz
350 VA
Installation Guide
*1
29
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