Agilent Technologies HP 70910A Podręcznik Użytkownika Pobierz pdf (Strona 32)

32 Chapter 2

Installation

Preparing the 11974 for Use

Installation

Preparing the 11974 for Use

When installing equipment, ensure that the 11974-60028 Power Supply ac power switch

and the power cord are easily accessible to allow for disconnecting the equipment from the

mains power supply. The power switch will remove power from the 11974, but the power

must be disconnected to remove the 11974-60028 from the mains power supply.

Position the equipment to protect it from moisture because the instrument case does not

protect against the ingress of water.

WARNING The front panel LINE switch disconnects the mains circuits from the

mains supply after the EMC filters and before other parts of the

instrument.

CAUTION Ventilation Requirements: When installing the product in a cabinet, the

air flow into and out of the product must not be restricted. The ambient

temperature (outside the cabinet) must be less than the maximum operating

temperature of the product by 4

°C for every 100 watts dissipated in the

cabinet. If the total power dissipated in the cabinet is greater than 800 watts,

then forced convection must be used.

The 11974 must be properly connected to one of the compatible spectrum analyzers listed

in Table 2-1. on page 29. Use the next four sections of this chapter to:

• Select the appropriate power source.

• Set the line-voltage selector switch correctly.

• Check the fuse.

• Select the appropriate power cable.

After preparing the 11974 for use, refer to Chapter 3 , for complete operation procedures

for the most commonly-used compatible spectrum analyzers. These procedures include

configuration setups listing all connections and giving step-by-step procedures describing

how to operate an 11974.

CAUTION Before this instrument is switched on, make sure that:

•the line voltage selector is set to the voltage of the mains supply;

•the correct fuse is installed;

•the supply voltage is in the specified range.

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Agilent Technologies HP 70910A Podręcznik Użytkownika Strona 32