Agilent V8486A Users Guide

User’s Guide
HP V8486A Power Sensor
Serial Number Prefix:
US3901
HP Part No. 08486-90131
Printed in USA
January 1999
© Copyright 1999 Hewlett-Packard Company
HP V8486A Power Sensor
Contents
1. HP V8486A Power Sensor
General Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
Warranty. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
Calibration Factor (CF) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
Installation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
Initial Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
Storage and Shipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
Operating Environment. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
Operating Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
Power Meter Calibrations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
Power Measurements. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
Operating Instructions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14
Modulation Effects . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14
Linearity Correction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15
Performance Tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16
Replaceable Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17
Repair and Adjustments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17
Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19
iii
Contents
iv

1 HP V8486A Power Sensor

1
HP V8486A Power Sensor
User’s Guide
Figure 1-1 HP V8486A Power Sensor with Accessories and Hardware
2 Chapter 1
HP V8486A Power Sensor
User’s Guide

General Information

This Operating Manual contains information about initial inspection and operation of the HP V8486A Power Sensor.

Warranty

The Power Sensor is warranted and certified as indicated on the last page of this manual. Do not open the Power Sensor. Any attempt to disassemble the Power Sensor will void warranty.

Description

The HP V8486A is a diode-based power sensor. It measures power levels in a range from 30 dBm to +20 dBm. (Specifications for the Power Sensor are in Table 1-1.) The HP V8486A measures at frequencies from 50 GHz to 75 GHz.
The power is determined from the ac voltage developed across the waveguide termination from the microwave source. The diodes convert this ac voltage to dc. The dc voltage produced is proportional to the square of the ac voltage. The dc voltage thus generated is a very low-level voltage and requires amplification before it can be transferred via the sensor cable to the power meter.
The amplification is provided by an input amplifier assembly which consists of a chopper (sampling gate) and an input amplifier. The dc voltage is routed to the chopper circuit which converts the low-level dc voltage to an ac voltage. The chopper is driven by a square wave generated by the power meter. The result is an ac output signal proportional to the dc input. The ac signal is then amplified by the input amplifier . The relatively high-level ac signal output can now be routed by standard cables.
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HP V8486A Power Sensor
User’s Guide
NOTE The HP V8486A Power Sensor is compatible with the following power
meters:
HP 435B HP E1416A HP 436A HP E4418A/B HP 437B HP E4419A/B HP 438A HP 70100A
To obtain optimum accuracy for power measurements above +10 dBm, when used with the HP E4418A and HP E4419A power meters, a firmware upgrade will be required. Refer to your HP E4418A and HP E4419A power meter’s user’s guide for instructions on how to obtain the revision of the firmware currently installed in the unit. The firmware revision required is A1.03.00 (or above) for the HP E4418A and A2.03.00 (or above) for the HP E4419A. Contact your local HP Sales and Service Office for more information.
In application, the Power Sensor is connected between a microwave source and a compatible power meter. The Power Sensor provides a matched load for the microwave source for very low SWR. The power meter indicates the power dissipated in the load in µW, mW or in dBm.
CAUTION Do not disassemble the Power Sensor. The Power Sensor is extremely
static-sensitive and can be easily damaged.

Accessories

Included is a hex ball driver plus the waveguide mounting screws. Refer to Figure 1-1 for a visual check of what should be included with your power sensor.
4 Chapter 1
Specifications
The specifications listed in Table 1-1 are the performance standards or limits against which the Power Sensor may be tested.
Table 1-1 Specifications
HP V8486A Power Sensor
User’s Guide
Characteristics and
Conditions
Frequency Range 50 to 75 GHz Power Range 1 µW to 100 mW (30 dBm to +20
dBm)
Nominal Impedance N/A Waveguide impedance varies
Connectors
50 MHz Calibration Port Type N (Male) 50 nominal impedance Waveguide Flange UG-385/U Flange (Modified) EIA WR-15
Maximum Standing Wave Ratio (SWR) and Reflection Coefficient (Rho)
HP V8486A 1.06 0.029 When mated to UG-385/U
Maximum Power 200 mW (average), 40 W (peak) Worst Case Power Linearity 10 mW to 100 mW (+10 dBm to
Operating Temperature Range
Net Weight 0.4 kg Dimensions Width: 38 mm Length: 199 mm
SWR Rho
+20 dBm) ±2% for EPM power meters; +1%, -3% for all other HP power meters.
0 to 55ºC
Height: 60 mm
Limits Comments
with frequency.
1
flange.
2
Any port < ±1% deviation except for
those power ranges noted.
1. Reflection coefficient (Rho or ρ) relates to SWR according to the following formula:
SWR
1 ρ+()
-----------------=
1 ρ()
2. 10 micro-second pulse, 0.5% duty cycle or equivalent such that 200 mW maximum average power and 40W peak power are not exceeded.
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HP V8486A Power Sensor
User’s Guide

Calibration Factor (CF)

The CAL F ACTOR compensates for the frequency response of the sensor. CAL FACTOR data is provided on a label attached to the sensor cover. Uncertainties of the CAL FACTOR data are listed in Table 1-2. ISO expanded uncertainties are calculated based on an NIST-traceable transfer standard and an analysis of factory test system uncertainties. To use CAL FACTOR data during power measurements, see "Power Measurements" in this manual.
Table 1-2 Calibration Factor Uncertainty at 1 mW (0 dBm)
Frequency (GHz)
50 4.8 51 6.1 52 5.9 53 5.9 54 5.9 55 4.6 56 6.1 57 6.1 58 6.2 59 6.2 60 4.7 61 6.2 62 6.1 63 6 64 6 65 4.5 66 6.6 67 6.7 68 6.7 69 6.6 70 4.4
ISO Expanded Uncertainty %
(coverage factor k=2)
1
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HP V8486A Power Sensor
User’s Guide
Frequency (GHz)
ISO Expanded Uncertainty %
(coverage factor k=2)
71 6.7 72 6.8 73 7.0 74 7.3 75 5.1
1. Refer to Application Note 64-1A: HP literature number
5965-6630E, “Fundamentals of RF and Microwave Power Measure­ments” for more information regarding ISO expanded uncertainty.
1
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HP V8486A Power Sensor
User’s Guide

Installation

Initial Inspection

Inspect the shipping container for damage. If the shipping container or packaging material is damaged, it should be kept until the contents of the shipment have been checked mechanically and electrically. If there is mechanical damage or if the instrument does not pass the performance tests, notify the nearest Hewlett-Packard office. Keep the damaged shipping materials (if any) for inspection by the carrier and a Hewlett-Packard representative.
Interconnections
The HP V8486A Power Sensor has two inputs: a Type-N connector and a waveguide flange. During calibration, the Type-N connector is connected to the calibration port of the power meter. During measurement, the waveguide flange is connected to the device under test.
CAUTION Connect the Power Sensor by turning only the nut on the Type-N
connector. Damage can occur if torque is applied to the Power Sensor body.
The waveguide flanges can be damaged if the flange screws are over-tightened. Do not fully tighten one flange screw without tightening the one opposite. First insert screws and tighten until finger tight. If you are using the hex ball driver, hold the driver between thumb and forefinger while incrementally tightening screws opposite each other until reaching a maximum torque of 0.42 N x m.
Use the protective packaging provided with the power sensor to protect it from dirt and mechanical damage whenever it is not in use. Any burrs, dents or dirt on the flange or waveguide surface will increase the SWR and change the Cal Factor.
Refer to the power meter operating and service manual for interconnecting instructions.
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HP V8486A Power Sensor
User’s Guide

Storage and Shipment

Environment
The instruments should be stored in a clean, dry environment. The following limitations apply to both storage and shipment:
Temperature. . . .. .. . . . .. .. . . . .. . . . .. .. . . . .. .. . . . .. .. . . . ..−40 to +75°C
Relative Humidity . . . .. .. . . . .. . . . .. .. . . . .. .. . . . .. .. . . . . . <95% @ 40°C
Altitude. . .. .. . . . .. .. . . . .. .. . . . .. . . . .. .. . . . .. .. . . . .. .. . . .< 7,600 meters
Original Packaging
Containers and materials identical to those used in factory packaging are available through Hewlett-Packard offices . If the instrument is being returned to Hewlett-Packard for servicing, attach a tag indicating the type of service required, return address, model number, and serial number. Also, mark the container FRAGILE to assure careful handling. In any correspondence, refer to the instrument by model number and serial number.
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HP V8486A Power Sensor
User’s Guide

Operation

WARNING BEFORE CONNECTING THE POWER SENSOR TO OTHER
INSTRUMENTS ensure that all instruments are connected to the protective (earth) ground. Any interruption of the protective earth grounding will cause a potential shock hazard that could result in personal injury.

Operating Environment

The operating environment for the Power Sensors should be within the following limits:
Temperature .. . . . .. .. . . . .. .. . . . .. .. . . . .. .. . . .. .. . . . .. .. . . . . . 0 to +55°C
Relative Humidity. .. . . . .. .. . . . .. .. . . . .. .. . . .. .. . . . .. .. . . . .. .. . . .< 95%
Altitude . . . .. .. . . . .. .. . . . .. .. . . . .. .. . . . .. .. . . .. .. . . . .. .. . < 4550 meters

Operating Precautions

CAUTION If the following energy and power levels are exceeded, the power meter
system may be damaged.
Maximum Average Power: 200 mWMaximum Peak Power: 40 W
The power sensor has a precision machined V-band waveguide interface . The size and position of the aperture, the alignment holes and pins, and the flatness of the mating faces are all very tightly controlled. Refer to
Figure 1-2.
In order to get the best possible measurement results the mating part must be of similar quality. Connection to a V-band w aveguide component in which the interface dimensions are not accurately controlled can lead to increased SWR, inaccurate Cal Factor correction, and/or repeatability
1. 10 micro-second pulse, 0.5% duty cycle or equivalent such that 200 mW maximum average power and 40W peak power are not exceeded.
10 Chapter 1
1
HP V8486A Power Sensor
User’s Guide
problems. In addition, connections to a well-manufactured but dirty part can lead to any of the above measurement problems. Conversely, always insuring connections to parts with clean, high-quality waveguide interfaces will lead to accurate power measurements over the life of the product.
CAUTION Connection to a V-band waveguide component with a dirty, or damaged
flange (e.g. loose particulates , raised metal burrs or bent alignment pins) can damage the precision interface of the power sensor. Always inspect and clean the mating part prior to connection.
Figure 1-2 Precision V-band Interface on Front of Power Sensor
Use the protective packaging provided with the sensor to protect the waveguide connector from dirt and mechanical damage whenever it is not in use. Any burn, dents or dirt on the flange or waveguide surface will increase the SWR and change the Cal Factor.
The Type-N connector plastic bead deteriorates when contacted by any chlorinated or aromatic hydrocarbons such as acetone, trichlorethylene, carbon tetrachloride, benzene, etc. Clean the connector face with a cotton swab saturated in isopropyl alcohol.
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HP V8486A Power Sensor
User’s Guide

Power Meter Calibrations

The procedure for calibration may be different for each compatible power meter. Follow the calibration directions given in your power meter manual.

Power Measurements

To correct for varying responses at different frequencies a cal factor chart is included on the Power Sensors . T o use the cal factor at the frequency of interest, adjust the power meter's CAL FACTOR control according to the instructions in the power meter's operating and service manual. This will automatically correct the power readings.
If you are using a HP 435B or HP 436A, the minimum cal factor setting is 85% and the maximum is 100%. If the cal factor setting for your frequency of interest is below the meter's minimum or above the meter's maximum, set the cal factor control to 100%, and divide the reading in watts units by the decimal equivalent of the cal factor. For example, if the cal factor is 75%, divide the reading by 0.75. (This will result in a larger value of power than that displayed by the meter.)
If the cal factor is 104%, divide the reading by 1.04. (This will result in a smaller value of power than that displayed by the meter.)
If reading in dBm, use the chart in Table 1-3 to convert the cal factor to dB and add this value to the reading. Interpolate for values between those shown. As above, the cal factor control should be set to 100%. If the cal factor is 75%, add 1.25 dB to the displayed value. On the other hand, if the cal factor is 104% subtract 0.17 dB from the displayed reading.
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HP V8486A Power Sensor
User’s Guide
NOTE The above procedure has eliminated some mathematical steps; the
following formula may be of some use: Correct dBm = Reading dBm 10 × Log10 {Cal Factor (decimal)}.
Table 1-3 Cal Factor
Cal
Factor
70% 1.549 85% 0.706 115% -0.607 71% 1.487 101% 0.043 116% 0.645 72% 1.427 102% 0.086 117% 0.682 73% 1.367 103% 0.128 118% 0.719 74% 1.308 104% 0.170 119% 0.755 75% 1.249 105% 0.212 120% -0.792 76% 1.192 106% 0.253 121% 0.828 77% 1.134 107% 0.294 122% 0.864 78% 1.079 108% 0.334 123% 0.899 79% 1.024 109% 0.374 124% 0.934 80% 0.969 110% 0.414 125% 0.969 81% 0.915 111% 0.453 126% 1.004 82% 0.862 112% 0.492 127% −1.038
dB
Cal
Factor
dB
Cal
Factor
dB
83% 0.809 113% 0.531 128% −1.072 84% 0.757 114% 0.569 129% −1.106
130% −1.139
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HP V8486A Power Sensor
User’s Guide
Figure 1-3 Typical Influence of Temperature on Sensitivity
The sensitivity of the power sensor is influenced by ambient temperature. The sensor should be calibrated at the temperature of operation to obtain the most accurate results. Typical temperature sensitivity variations are shown in Figure 1-3.

Operating Instructions

To operate the Power Sensor, refer to the operating instructions in of the power meter operating and service manual.
NOTE If having an open RF connection on your system is a concern, terminate
the sensor Type-N calibration port with a 50 load.

Modulation Effects

When measuring microwave sources that are modulated at the chopper frequency (nominally 220 Hz for the HP 43X family and 217 Hz for the HP E4418A/B and HP E4419A/B), or at the first or second harmonic or submultiples of the chopper frequency, beat notes will occur. Unless the modulation rate is exactly the chopper frequency, they can usually be eliminated by averaging since the amplitudes are centered on the actual power. These frequencies may also be avoided by changing the modulation frequency slightly, if possible.
If you are using an HP 437B, HP E4418A/B or HP E4419A/B Power Meter, a filter setting of 128 will minimize most beat note interference. To minimize beat note interference using a HP 438A Power Meter select a filter number of at least 7.
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HP V8486A Power Sensor
User’s Guide

Linearity Correction

For most HP 8480 series power sensors the correct (A type or D type) linearity correction table is automatically selected. However, when you use the HP V8486A power sensor with HP EPM power meters, you must override the automatic selection and select the D-type correction. This procedure provides optimum accuracy when making power measurements >+10dBm. Subsequent connection of another A-type sensor will result in a warning message stating the “Linearity Override May be Required”.
To select the linearity type to be applied: HP E4418B Press [System Inputs], Tables, Linearity ATyp DTyp.
HP E4419B Press [System Inputs], Tables, A Linearity ATyp DTyp or B Linearity
ATyp DTyp.
NOTE For use with the HP E4418A and HP E4419A power meters, a firmware
upgrade will be required. Refer to your HP E4418A and HP E4419A power meter’s user’s guide for instructions on how to obtain the revision of the firmware currently installed in the unit. The firmware revision required is A1.03.00 (or above) for the HP E4418A and A2.03.00 (or above) for the HP E4419A. Contact your local HP Sales and Service Office for further information.
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HP V8486A Power Sensor
User’s Guide

Performance Tests

This section does not establish SWR test procedures since there are several test methods and different equipment available for testing the SWR or reflection coefficient. Therefore, the actual accuracy of the test equipment, all source match corrections, and all harmonics must be accounted for when measuring against instrument specifications to determine a pass or fail condition.
To measure the SWR across the waveguide band, use a directional coupler and detector selected for the band of interest. The directional coupler should have a directivity greater than 36 dB, such as the HP V752C/D. The detector should have greater than 0.4 mV/µW sensitivity and should be calibrated with a rotary vane attenuator with an accuracy of 2%. Incident power should be less than +20 dBm. A convenient source is a frequency multiplier driven by an HP 8360 B-Series swept signal generator.
To check the calibration factor, the Power Sensor should be compared with another recently calibrated power sensor. The source should be leveled with a reference coupler that has low SWR and high directivity to monitor or level the incident power.
For calibration factor and error analysis we suggest HP Application Note 64-1A: HP literature number 5965-6630E, "Fundamentals of RF and Microwave Power Measurements".
16 Chapter 1

Replaceable Parts

The part numbers of the hex ball driver and the hardware are listed in Figure 1. In addition, the following protective parts are replaceable:
Table 1-4 Replaceable Parts
Part Number Description Usage
1401-0214 protective cap Type-N connector
08486-40103 protective cover V-band waveguide flange
There are no other replaceable parts for this product. A listing of Hewlett-Packard sales and service offices is located at the
end of this manual.

Repair and Adjustments

HP V8486A Power Sensor
User’s Guide
Do not attempt to repair or adjust the Power Sensor. Due to the extreme static sensitivity of the Power Sensor, customer repair is not recommended. If your Power Sensor should fail or need calibration, return it to Hewlett-Packard.
CAUTION Do not disassemble the Power Sensor. The Power Sensor is extremely
static sensitive and can be easily damaged. If the Power Sensor shows evidence of attempted customer repair, the warranty may be voided.
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User’s Guide
Table 1-5 Hewlett-Packard Sales and Service Offices
UNITED STATES Instrument Support Center
Hewlett-Packard Company (800) 403-0801
EUROPEAN FIELD OPERATIONS Headquarters
Hewlett-Packard S.A. 150, Route du Nant-d’Avril 1217 Meyrin 2/ Geneva Switzerland (41 22) 780.8111
Great Britain Hewlett-Packard Ltd. Eskdale Road, Winnersh Triangle Wokingham, Berkshire RG41 5DZ England (44 734) 696622
INTERCON FIELD OPERATIONS Headquarters
Hewlett-Packard Company 3495 Deer Creek Rd. Palo Alto, CA 94304-1316 USA (415) 857-5027
Japan Hewlett-Packard Japan, Ltd. 9-1 Takakura-Cho, Hachioji Tokyo 192, Japan (81 426) 60-2111
China China Hewlett-Packard Co. 38 Bei San Huan X1 Road Shuang Yu Shu Hai Dian District Beijing, China (86 1) 256-6888
France Hewlett-Packard France 1 Avenue Du Canada Zone D’Activite De Courtaboeuf F-91947 Les Ulis Cedex France (33 1) 69 82 60 60
Australia Hewlett-Packard Australia Ltd. 31-41 Joseph Street Blackburn, Victoria 3130 (61 3) 895-2895
Singapore Hewlett-Packard Singapore (Pte.) Ltd. 150 Beach Road #29-00 Gateway West Singapore 0718 (65) 291-9088
Germany Hewlett-Packard GmbH Hewlett-Packard Strasse 61352 Bad Homburg v.d.H Germany (49 6172) 16-0
Canada Hewlett-Packard (Canada) Ltd. 17500 South Service Road Trans-Canada Highway Kirkland, Quebec H9J 2X8 Canada (514) 697-4232
Taiwan Hewlett-Packard Taiwan 8th Floor, H-P Building 337 Fu Hsing North Road Taipei, Taiwan (886 2) 712-0404
18 Chapter 1
HP V8486A Power Sensor
User’s Guide

Warranty

This Hewlett-Packard instrument product is warranted against defects in material and workmanship for a period of 1 year from date of shipment. During the warranty period, Hewlett-Packard Company will, at its option, either repair or replace products which prove to be defective.
For w arranty service or repair, this product must be returned to a service facility designated by Hewlett-Packard. Buyer shall prepay shipping charges to Hewlett-Packard and Hewlett-Packard shall pay shipping charges to return the product to Buyer. However, Buyer shall pay all shipping charges, duties, and taxes for products returned to Hewlett-Packard from another country.
Hewlett-Packard warrants that its software and firmware designated by Hewlett-Packard for use with an instrument will execute its programming instructions when properly installed on that instrument. Hewlett-Packard does not warrant that the operation of the instrument, or software, or firmware will be uninterrupted or error-free.
Limitation of Warranty The foregoing warranty shall not apply to defects resulting from
improper or inadequate maintenance by Buyer, Buyer-supplied softw are or interfacing, unauthorized modification or misuse, operation outside of the environmental specifications for the product, or improper site preparation or maintenance.
NO OTHER WARRANTY IS EXPRESSED OR IMPLIED. HEWLETT­PACKARD SPECIFICALLY DISCLAIMS THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
Exclusive Remedies THE REMEDIES PROVIDED HEREIN ARE BUYER’S SOLE AND
EXCLUSIVE REMEDIES. HEWLETT-PACKARD SHALL NOT BE LIABLE FOR ANY DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES, WHETHER BASED ON CONTRACT, TORT, OR ANY OTHER LEGAL THEORY.
Chapter 1 19

Index

A
adjustments
C
cal factor calibration factor calibration factor uncertainty calibrations
power meter
CF
, 6
connections connectors
D
dimensions
F
frequency range
I
interface
V-band
L
linearity correction
M
marker maximum power measurements
power
modulation effects
N
net weight nominal impedance
, 17
, 13
, 6
, 12
, 8
, 5
, 5
, 5
, 11
, 15
, 4
, 5
, 12
, 14
, 5
, 5
O
operating
environment precautions
temperature range operating environment operating precautions
, 6
operating temperature range
P
packaging performance tests power
maximum
worst case linearity power measurements power meter calibrations power range
R
repair
, 17
replaceable parts Rho
, 5
S
specifications standing wave ratio storage
T
temperature
operating range tests
performance
U
uncertainty
calibration factor
, 10
, 10
, 9
, 5
, 5
, 5
, 9
, 16
, 16
, 17
, 5
, 6
, 5
, 5
, 5 , 12
, 10
, 10
, 12
V
V-band interface
W
warranty worst case power linearity
, 3, 19
, 5
, 11
, 5
1 Index
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