Bird Technologies 6156 - Manuale (Pagina 17)

Chapter 3
Installation
This chapter provides information for preparing the Models
6104, 6154, and 6156 for use.
Location
Free air circulation around the wattmeter is essential. Posi-
tion the equipment with clearance around it and do not
place it near heated surfaces. The wattmeter should have at
least a four inch clearance on all sides. The space above the
equipment should be kept unobstructed for good heat trans-
fer. Use the load portion of the wattmeter in a horizontal po-
sition only. The meter housing may be detached and used in
a horizontal or vertical position.
Mounting
The Models 6104, 6154, and 6156 are essentially portable
test instruments. Place the wattmeter as close as possible to
the equipment of which the RF power is being measured.
The wattmeter may be fastened to a work or test surface
The bumpers are fastened to the radiator brace by 8-32
studs which are set permanently into the rubber feet. The
bumpers unscrew easily by hand. The holes are threaded for
8-32 screws and fasteners. The holes are on a 3 by 7 inch
rectangle, (76 x 178 mm).
To mount the unit to a work or test surface, follow the in-
structions below.
1. Remove the four rubber bumpers from
the bottom of the radiator.
2. Place the screws up through the work
surface and into the radiator.
3. Secure the radiator to the work sur-
face with appropriate fasteners.
Latch
Mechanism
The meter housing is retained on the radiator by the
bowed-spring action of the latch spring, which is a rod of
heavy wire. While following the removal and assembly in-
structions, refer to figure 4.
To remove the meter case:
1. Raise the buttons at the sides of the
case, one at a time, to lift the spring
5