Boonton 4540 Peak Power Meter User Manual - Manual (Page 33)

Boonton 4540 Series RF Power Meter
Getting Started 3-5
Table 3-1 Operating Controls, Indicators and Connections (continued)
Reference #
Front Rear Nomenclature Function
20 Cooling Fan Cooling air intake
21 AC Line Input A multi-function power input module is used to house the AC line input, main
power switch, and safety fuse. The module accepts a standard AC line cord,
included with the power meter. The power switch is used to shut off main
instrument power. The safety fuse may also be accessed once the line cord is
removed. The instrument’s power supply accepts 90 to 260VAC, so no line
voltage selection switch is necessary.
Caution Replace fuse only with specified type and rating:
1.0A-T (time delay type), 250VAC
Figure 3-2. 4540 Series - Rear Panel
(Shown without optional rear panel connectors not installed)