Maintenance
51
Specifications, 4
421 Power Meter
Bird 4421 RF Power Meter
Frequency Range
Sensor dependent
Power Range
Sensor dependent
VSWR Display
Return Loss Display
0 to 40 dB max
Display Accuracy
± 1 on least significant digit
AC Power
115/230 Vac @ 50/60 Hz; 60 W
Batteries
8 Nickel Metal Hydride 1.2 v cells, rechargeable
Battery Life
Approximately 8 hours continuous usage
Battery Charger
Built-in battery charger. Drained batteries require
approximately 28 hours to recharge.
Display
LCD, 4½ digit display. Indicates mode, measurement
units, battery condition, remote status, and signal
increase/decrease. Self contained backlight.
Optional Interfaces
IEEE-488 GPIB
RS-232
Fuse Rating
IEC (5 x 20 mm) Time Lag Type T
115 Vac
230 Vac
T630 mA
T315 mA
CE
CE Compliant. Refer to Declaration of Conformity for
specific standards.
Humidity
95% max. (noncondensing)
Altitude
Up to 10,000 feet (3,000 m)
Temperature Range
Operating
Storage
0 to 50 °C (32 to 122 °F)
Dimensions
Weight, Nominal
9.5 lbs. (4.3 kg)