Bird Technologies 4421 - Manual (Page 13)

1
Chapter 1 Introduction
Power Meter
The Bird 4421 RF Power Meter is one component of a complete RF power mea-
surement system. An RF power sensor such as a Bird 4021 is also required.
The system can be controlled with the front panel buttons, or remotely
through an RS-232 connection or a GPIB-488 connection.
Items Supplied
z Bird 4421 RF Power Meter
z AC Power Cord
z Sensor Cable
z Instruction Manual
Optional Accessories
Panel Mount Kit (P/N 4421-250) - Allows the Bird 4421 to be installed in a
standard 19" panel for rack mount applications.
Null Modem Kit (P/N 4380-250) -
Contains the hardware necessary to allow
the 4421 to be remotely controlled by controllers with different wiring
arrangements. Requires an RS-232 interface module.
Figure 1 Bird 4421 Meter Outline Drawing
REMOVE AC POWER BEFORE ATTEMPTING TO SERVICE THIS INSTRUMENT
VOLTAGE 115/230 V
FUSE RATING T630mA/T315mA
FREQUENCY 50/60 Hz
MAXIMUM POWER 60W
AC SUPPLY
ON
O OFF
I
POWER
SENSOR
REAR
6
7 8
9 10
13
12 11
12-1/4” (312 mm)
4 5
SIDE
10-1/8” (257 mm)
4-1/4”
(108 mm)
1 2 3
FRONT
MODEL 4421 RF POWER METER
AUTO
RANGE
UP
DOWN
SWR RFL FWD MIN MAX dBm LIGHT ON / OFF
1. Operating Push
Buttons
2. LCD
3. ON/OFF Push Button
4. Handle
5. Central Button
6. Fuse Access Door
7. AC Line Module
8. Master ON/OFF
Switch
9. GPIB connector
10. GPIB DIP switches
11. RS-232 connector
12. RS-232 DIP switches
13. Power Sensor Socket