RF Directional Thruline
®
Precision Power Sensors
4028 Series
Operations Manual
©Copyright 2012 by Bird Electronic Corporation
Instruction Book Part Number 920-4028S Rev. F
Specifications
Accuracy FWD Accuracy
FWD Power
10
Directivity 10/
---------------------------------+=
VSWR 1
P
R
P
F
------+
⎝⎠
⎜⎟
⎛⎞
1
P
R
P
F
------–
⎝⎠
⎜⎟
⎛⎞
⁄=
CAUTION
Changing the sensor’s connectors will invalidate calibration data, and may
reduce the maximum power rating of the unit.
Frequency Range
4028A250K
4028A400K
4028A2M
4028A3M
4028A4M
4028A10M
4028A25M
4028B10M
4028C10M
RF Power Range
4028A250K
4028A400K
4028C10M
All other models
Accuracy, Fwd
*
At Calibration Frequencies
and Power Levels
At Other Frequencies and
Power Levels
Accuracy, Reflected Calculated from FWD accuracy & FWD power
250 – 400 kHz
400 – 550 kHz
1.5 – 2.5 MHz
2.5 – 3.5 MHz
3.5 – 4.5 MHz
10 – 15 MHz
25 – 30 MHz
10 – 15 MHz
10 – 15 MHz
1 kW – 20 kW
1 kW – 20 kW
500W – 50 kW
1 kW – 25 kW
± 2.0% (2s)
± 3.0% (2s)
Accuracy, VSWR Calculated from FWD and RFL power
VSWR, Max. 1.05:1
Insertion Loss, Max.
4028C10M 0.05 dB (with female 7-16 DIN connectors)
Directivity, Min. 28 dB
Impedance, Nominal 50 ohms
Max. Allowable Terminating VSWR 2.00:1
*. For rated accuracy, no more than 1% AM; Harmonics –50 dBc or less. Derate accuracy by
2% for temperatures outside 25 ± 10°C
0.05 dB (with 3-1/8 in EIA connector)
1
Calibration Frequencies,
Typical (MHz)
*
4028A250K
4028A400K
4028A2M
4028A3M
4028A4M
4028A10M
4028A25M
4028B10M
4028C10M
0.25, 0.40
0.40
1.8, 2.0, 2.17
2.5, 3.2, 3.5
3.5, 4.0
10.0, 13.56, 15.0
25.76, 27.12, 28.48
10.0, 13.56, 15.0
10.0, 13.56, 15.0
Calibration Power, Typical 1.7 kW
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 1 year
Sampling Rate, Nominal 2 readings / second
Operating Power Supplied by power meter via sensor cable
Connectors
4028B10M
4028C10M
All other models
1-5/8” EIA Flanged
3-1/8” EIA Flanged
Customer specified from 7-16 DIN, LC, HN,
and 7/8" flanged, appropriate for frequency
and power.
CE CE Compliant. Refer to Declaration of
Conformity for specific standards.
Humidity, Max. 95% (Non-condensing)
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
4028B10M, 4028C10M
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)
Weight, Nominal
4028B10M, 4028C10M
4028A250K, 400K
All other models
5 lb. 2 oz. (2.33 kg)
1 lb. 13 oz. (0.8 kg)
3 lb. 9 oz. (1.6 kg)
*. Other calibration frequencies available upon request
2
Figure 1 4028A Outline
3-1/4”
(83 mm)
4-1/8”
(105 mm)
DIRECTIONAL POWER SENSOR
MODEL 4028A2M
1kW – 20kW
1.5 – 2.5 MHz
4-3/4”
(121 mm)
3/4”
(19 mm)
1-3/4”
(45 mm)
RF CONNECTORS
(FEMALE N SHOWN)
– CAUTION –
12000 WATTS MAX.
SOURCE LOAD
SENSOR PLUG
SOCKET
RUBBER
SHOCK FEET
SENSOR PLUG
SOCKET
3.75"
(96 mm)
4.75"
(121 mm)
3.5"
(89 mm)
6.75"
(172 mm)
SOURCE LOAD
Figure 2 4028B Outline
Figure 3 4028C Outline
3
Special Lifetime Warranty
Series 4028 Power Sensor Head
In addition to its standard warranty, the Bird Electronic Corporation warrants its
Series 4028 Thruline® Power Sensor Heads for lifetime to original purchaser. This
extended warranty is against burnout. For the warranty to apply, the Sensor
Head must be used with the correct Bird Electronic Corporation Display Unit, the
maximum power rating of the Sensor must not be exceeded, the Sensor RF cir
cuit must be properly terminated and the Sensor not subjected to physical
abuse.
Bird Electronic Corporation, at its option, will repair or replace the defective
Sensor at its world Headquarters at 30303 Aurora Road, Solon, Ohio 44139.
The customer is responsible to pay transportation charges to return the defective sensor to Bird.
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