Maintenance
46
Specifications, 4421 RF Power Meter
Table 21 Bird 4421 RF Power Meter
Frequency Range Sensor dependent
Power Range Sensor dependent
VSWR Display 1.0 – 199.9 max
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
(reduced after high temperature charging)
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.
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)
–20 to +50 °C (–4 to +122 °F)
Dimensions
2016 and prior
2016 and newer
12.3”L x 12.2”W x 4.2”H (312 x 309 x 103 mm)
10.7”L x 12.2”W x 4.2”H (271 x 309 x 103 mm)
Weight, Nominal 9.5 lbs. (4.3 kg)
CAUTION
Changing the sensor’s connectors will invalidate calibration data, and may reduce the
maximum power rating of the unit.
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