Bird Technologies 4421 - Manual (Page 56)

Bird 4421 RF Power Meter
44
Table 7-22 Specifications Common to all Sensors
Impedance, Nominal 50 ohms
Max. Allowable Terminating
VSWR 2.00:1
Calibration Technique Frequency-specific calibration factors stored in
nonvolatile memory in each sensor.
Sensor output corrected for frequency and
temperature within specified ranges.
Calibration Cycle, Nominal 4027A and 4027F, 6 months
All other models, 1 year
Accuracy, Reflected Calculated from FWD accuracy and FWD power
Accuracy, VSWR Calculated from FWD and RFL power
Sampling Rate, Nominal 2 readings/second
Operating Power Supplied by power meter via sensor cable
Connectors
4028B10M
4028C10M
4028A Series
All other models 1-5/8” EIA Flanged
3-1/8” EIA Flanged
7-16 DIN, LC, HN, or 7/8”
Customer specified from QC list, appropriate for
frequency and power.
CE CE Compliant. Refer to Declaration of Conformity
for specific standards.
Humidity, Max. 95% (noncondensing)
Altitude, Max. 10,000 feet (3,000 m)
Temperature Range
Operating
Storage 0 to 50 °C (32 to 122 °F)
–20 to +70 °C (–4 to +158 °F)
Dimensions
4028B3M, 4028B10M
4028A Series
All other models 6.75”L x 3.5”W x 4.75”H (175 x 89 x 121 mm)
4.7”L x 3.2”W x 3.8”H (120 x 82 x 97mm)
5.2”L x 2.5”W x 3.25”H (137 x 64 x 83 mm)
Weight, Nominal
4028B3M, 4028B10M,
4028C10M
4028A2M, 3M, 4M, 10M,
and 25M
All other models
5 lb. 2 oz. (2.33 kg)
3 lb. 5 oz. (1.5 kg)
1 lb. 13 oz. (0.8 kg)
RFL Accuracy FWD Accuracy
FWD Power
10 Directivity 10 /
--------------------------------- + =
VSWR 1
P
R
P
F
------ +
⎝ ⎠
⎜ ⎟
⎛ ⎞
1
P
R
P
F
------ –
⎝ ⎠
⎜ ⎟
⎛ ⎞
⁄ =