Agilent Technologies 85037-90013 User Manual
Operating and Service Manual
Agilent Technologies
85037A/B
Precision Detectors
Serial Numbers
This manual applies directly to Agilent 85037A/B detectors with serial
number 00101 and above.
Part Number: 85037-90013
Printed in USA
November 2001
Supersedes June 1993
© Copyright 1992–1993, 2001 Agilent Technologies, Inc.
Notice.
The information contained in this document is subject to change without notice.
Agilent Technologies makes no warranty of any kind with regard to this material,
including but not limited to, the implied warranties of merchantability and fitness for a
particular purpose. Agilent shall not be liable for errors contained herein or for incidental
or consequential damages in connection with the furnishing, performatnce, or use of this
material.
Hewlett-Packard to Agilent Technologies Transition
This documentation supports a product that previously shipped under the
Hewlett-Packard company brand name. The brand name has now been changed to Agilent
Technologies. The two products are functionally identical, only our name has changed. The
document still includes references to Hewlett-Packard products, some of which have been
transitioned to Agilent Technologies.
ii
Certification
AgilentTechnologies certies that this product met its published
specications at the time of shipment from the factory. Agilent
further certies that its calibration measurements are traceable to the
United States National Institute of Standards and Technology,to
the extent allowed by the Institute's calibration facility, and to the
calibration facilities of other International Standards Organization
members.
Warranty
This Agilent instrument pro duct is warranted against defects in
material and workmanship for a perio d of one year from date of
shipment. During the warranty p eriod, Agilent will, at its option,
either repair or replace pro ducts which prove to be defective.
For warranty service or repair, this product must be returned to a
service facility designated by Agilent. Buyer shall prepay shipping
charges to Agilent and Agilent shall pay shipping charges to return
the pro duct to Buyer. However, Buyer shall pay all shipping charges,
duties, and taxes for pro ducts returned to Agilen
t from another
country.
AgilentTechnologies warrants that its software and rmware
designated by Agilent for use with an instrument will execute
its programming instructions when prop erly installed on that
instrument. Agilent does not warrant that the operation of the
instrument, or software, or rmware will b e 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
software or interfacing, unauthorized modication or misuse,
operation outside of the environmental specications for the
product, or improper site preparation or maintenance.
NO OTHER WARRANTY IS EXPRESSED OR IMPLIED.
HEWLETT-PACKARD 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.
iii
Assistance
Product maintenance agreements and other customer assistance
agreements are available for Agilent products.
For any assistance, contact your nearest Agilent Technologies Sales
and Service Oce.
Safety Notes
Caution
Warning
The following safety notes are used throughout this manual.
Familiarize yourself with each of the notes and its meaning before
operating this instrument.
Caution
denotes a hazard. It calls attention to a pro cedure that, if
not correctly performed or adhered to, could result in damage to or
destruction of the instrument. Do not proceed b eyond a
caution
sign
until the indicated conditions are fully understood and met.
Warning
denotes a hazard. It calls attention to a procedure which, if
not correctly performed or adhered to, could result in injury or loss
of life. Do not proceed beyond a
warning
note until the indicated
conditions are fully understood and met.
Instruction
Manual
The
instruction manual
symbol. The product is marked with
this symbol when it is necessary for the user to refer to the
instructions in the manual.
L
iv
Contents
1. General Information
Introduction . . . . . . . . . . . . . . . . . . 1-1
Product Description . . . . . . . . . . . . . 1-1
Instruments Covered by This Manual . . . . . . 1-1
Accessories . . . . . . . . . . . . . . . . . . 1-2
Equipment Required but Not Supplied . . . . . . 1-2
Recommended Test Equipment. . . . . . . . . 1-2
Reection or Transmission Measurements . . . . 1-2
AC Detection . . . . . . . . . . . . . . . . 1-2
Specications and Supplemental Characteristics . . 1-2
2. Installation
Safety Considerations . . . . . . . . . . . . . . 2-1
Initial Inspection . . . . . . . . . . . . . . . . 2-1
Preparation for Use . . . . . . . . . . . . . . . 2-2
Electrostatic Discharge (ESD) . . . . . . . . . 2-2
Static-Safe Workstation . . . . . . . . . . . 2-2
Static-Safe Practices . . . . . . . . . . . . 2-2
Power Requirements . . . . . . . . . . . . . 2-3
Cable Lead Identication . . . . . . . . . . . 2-3
Mating Connectors . . . . . . . . . . . . . . 2-3
Connecting an 85037A/B . . . . . . . . . . . 2-3
Mating a Precision 3.5 mm Connector to an SMA
Connector . . . . . . . . . . . . . . . 2-4
Electrical Performance . . . . . . . . . . 2-4
Operating Environment.. . . . . . . . . . . . 2-6
Storage and Shipment. . . . . . . . . . . . . . 2-6
Environment. . . . . . . . . . . . . . . . . 2-6
Packaging . . . . . . . . . . . . . . . . . . 2-6
Returning a Detector for Service . . . . . . . . . 2-7
3. Operation
Operating Theory . . . . . . . . . . . . . . . 3-1
AC Detection . . . . . . . . . . . . . . . . 3-1
DC Detection . . . . . . . . . . . . . . . . 3-1
Features . . . . . . . . . . . . . . . . . . . . 3-2
Connector Torque Values . . . . . . . . . . . . 3-2
Operator's Check. . . . . . . . . . . . . . . . 3-3
Operating Mo des and Sp ecications . . . . . . . 3-3
Dynamic Accuracy . . . . . . . . . . . . . . 3-3
Frequency Response . . . . . . . . . . . . . 3-3
Measurement System Conguration . . . . . . . . 3-4
Contents-1
DC Detection Measurements . . . . . . . . . . . 3-5
Enabling the DC Detection Mo de . . . . . . . 3-5
Making Accurate DC Measurements . . . . . . 3-5
Operation . . . . . . . . . . . . . . . . . 3-5
Zeroing an 85037A/B . . . . . . . . . . . . 3-5
AC Detection Measurements . . . . . . . . . . . 3-6
Making Accurate AC Measurements . . . . . . 3-6
Characterizing the Detector (Performing a Power
Calibration) . . . . . . . . . . . . . . . . 3-7
4. Performance Tests
Introduction . . . . . . . . . . . . . . . . . . 4-1
Equipment Required . . . . . . . . . . . . . 4-1
Return Loss at a Nominal010 dBm . . . . . . . 4-2
Description . . . . . . . . . . . . . . . . . 4-2
Procedure . . . . . . . . . . . . . . . . . . 4-3
Frequency Response at a Nominal010 dBm . . . . 4-5
Description . . . . . . . . . . . . . . . . . 4-5
Procedure . . . . . . . . . . . . . . . . . . 4-6
Conguring the System . . . . . . . . . . . . 4-6
Measuring the Source . . . . . . . . . . . . . 4-7
Measuring the Detector . . . . . . . . . . . . 4-7
Computing the Maximum Error . . . . . . . . 4-8
Dynamic Power Accuracy . . . . . . . . . . . . 4-10
Description . . . . . . . . . . . . . . . . . 4-10
Procedure . . . . . . . . . . . . . . . . . . 4-10
First Alternate Dynamic Power Accuracy . . . . . 4-11
Description . . . . . . . . . . . . . . . . . 4-11
Second Alternate Dynamic Power Accuracy . . . . 4-12
Description . . . . . . . . . . . . . . . . . 4-12
Procedure . . . . . . . . . . . . . . . . . . 4-12
Contents-2
5. Adjustments
Introduction . . . . . . . . . . . . . . . . . . 5-1
Coarse Zero Adjustment. . . . . . . . . . . . . 5-2
Description . . . . . . . . . . . . . . . . . 5-2
Procedure . . . . . . . . . . . . . . . . . . 5-2
Feedthrough Nulling Adjustment.. . . . . . . . 5-3
Description . . . . . . . . . . . . . . . . . 5-3
Procedure . . . . . . . . . . . . . . . . . . 5-3
6. Replaceable Parts
Introduction . . . . . . . . . . . . . . . . . . 6-1
Ordering Parts . . . . . . . . . . . . . . . . . 6-1
7. Service
Error Messages . . . . . . . . . . . . . . . . . 7-1
Repair . . . . . . . . . . . . . . . . . . . . 7-1
Replacing the Detector . . . . . . . . . . . . 7-2
Removing the Covers . . . . . . . . . . . . . 7-2
Replacing the Cable Assembly (W1) . . . . . . 7-3
A. Caring for Connectors
Visual Inspection . . . . . . . . . . . . . . . . A-1
Cleaning . . . . . . . . . . . . . . . . . . A-1
Mechanical Inspection . . . . . . . . . . . . . A-2
Index
Contents-3
Figures
2-1. Example of a Static-Safe Workstation . . . . . . 2-2
2-2. Using Precision 7 mm Connectors . . . . . . . 2-3
2-3. SMA and 3.5 mm Connector Cross-Sections and
SWR Performance . . . . . . . . . . . . . 2-5
3-1. Detector Features . . . . . . . . . . . . . . 3-2
3-2. Typical Measurement Setup . . . . . . . . . . 3-4
4-1. Return Loss Setup . . . . . . . . . . . . . . 4-2
4-2. Frequency Response Test Setup . . . . . . . . 4-5
4-3. Frequency Response Graph . . . . . . . . . . 4-9
4-4. Dynamic Power Accuracy Test Setup . . . . . . 4-11
4-5. First Alternate Dynamic Power Accuracy Test Setup 4-11
4-6. Second Alternate Dynamic Power Accuracy Test
Setup . . . . . . . . . . . . . . . . . . 4-12
5-1. Coarse Zero/Feedthrough Nulling Adjustment . . 5-2
5-2. Coarse Zero Adjustment. . . . . . . . . . . . 5-3
5-3. Feedthrough Nulling Adjustment. . . . . . . . 5-4
6-1. Detectors and Cable Marker Kit . . . . . . . . 6-2
6-2. Mo dule Exchange Program . . . . . . . . . . 6-4
7-1. Removing the Detector Covers . . . . . . . . . 7-2
7-2. Cable Connections . . . . . . . . . . . . . . 7-4
Tables
Contents-4
1-1. Agilent 85037A Standard1. . . . . . . . . . . 1-3
1-2. Agilent 85037B Specications1. . . . . . . . . 1-4
1-3. Supplemental Characteristics . . . . . . . . . 1-5
1-4. Recommended Test Equipment. . . . . . . . . 1-6
4-1. Return Loss EquipmentTable . . . . . . . . . 4-3
4-2. Frequency Response EquipmentTable . . . . . . 4-6
4-3. Worksheet . . . . . . . . . . . . . . . . . . 4-9
4-4. Additional Equipment . . . . . . . . . . . . 4-12
4-5. Test Record for 85037A . . . . . . . . . . . . 4-13
4-6. Test Record for 85037A Option 001 . . . . . . . 4-17
4-7. Test Record for 85037B . . . . . . . . . . . . 4-21
6-1. Miscellaneous Parts . . . . . . . . . . . . . . 6-2
6-2. Replaceable Parts and Accessories . . . . . . . 6-3
6-3. Contacting Agilent . . . . . . . . . . . . . . 6-5
General Information
1
Introduction
Product Description
This manual contains information on operating, testing, and servicing
the Agilent 85037A and 85037B precision detectors. Figure 6-1 shows
the detectors and the supplied cable marker kit.
The Agilent 85037A/B precision detectors are specically designed
for use with an Agilent 8757D scalar network analyzer and are
not compatible with the Agilent 8757A/C/E, 8756, or 8755 scalar
network analyzers. These dual0diode detectors may be used in
either AC or DC detection modes. For improved power measurement
accuracy versus frequency, each Agilent 85037 series precision
detector includes detector specic frequency response data, stored in
an internal EEPROM, which is automatically read by the 8757D.
When used in conjunction with the 8757D's internal p ower calibrator
(Option 002), these detectors provide the maximum absolute power
measurement accuracy.
Agilent Detector Connector Type
85037A Type-N (m)
85037A Option 001 Precision 7 mm
85037B Precision 3.5 mm (m)
Instruments Covered by
This Manual
Each detector has a unique serial number. The contents of this
manual apply directly to detectors with serial numbers listed on the
title page.
General Information 1-1
Accessories
Equipment Required
but Not Supplied
Table 6-2 lists accessories available for use with these detectors.
Recommended Test
Equipment
Reflection or
Transmission
Measurements
AC Detection
Table 1-4 lists the equipment required to test the detectors. You
may substitute any equipment that meets the indicated critical
specications.
Reection and transmission measurements require the following
equipment:
One or more detectors.
An Agilent 8757D scalar network analyzer.
One
of the following:
A directional bridge.
A directional coupler.
Asweep oscillator or synthesized sweeper.
For ratio measurements use:
Apower splitter or dual directional coupler.
AC detection requires the equipment listed ab ove,
plus
either a signal
source capable of 27.778 kHz squarewave amplitude modulation, or
an external modulator.
Specifications and
Supplemental
Characteristics
1-2 General Information
Table 1-1 and Table 1-2 list detector specications which are the
performance standards or limits against whichyou can test the
device.
Table 1-3 lists supplemental (typical, non-warranted) detector
characteristics.
Table 1-1. Agilent 85037A Standard
Connector
Standard Type-N (m)
Option 001 Precision 7 mm
Frequency Range
0.01 to 18 GHz
Return Loss
0.01 to 0.04 GHz 10 dB
0.04 to 18 GHz 20 dB
Frequency Response
0.01 to 0.04 GHz
0.04 to 18 GHz
2
6
0.35 dB
6
0.18 dB
Dynamic Range
ACmode +20 to055 dBm
DC mode +20 to050 dBm
DC Absolute Power Accuracy
3,5
Power Corrected Default
(dBm) (6dB) (6dB)
+20 0.25 0.40
+10 0.11 0.40
0
30 0.11 0.40
0
40 0.40 0.80
0
50 0.85 1.30
AC Dynamic Power Accuracy
3,4
1
Power Corrected Default
(dBm) (6dB) (6dB)
+20 0.25 0.40
+10 0.11 0.40
0
30 0.11 0.40
0
40 0.40 0.80
0
50 0.85 1.30
0
55 0.85 1.30
Temp erature Co ecient of Linearity
1
The 85037A/B sp ecications only apply when used with the 8757D scalar network analyzer.
2
0
10 dBm, 2565C
3
The corrected sp ecications apply after a calibration via the 8757D Option 002 in
The default sp ecications apply when the calibrator is not used. P
0.01 dB/C temp. change after calibration.
ternal calibrator.
ower calibrator uncertaintyis
included in the 85037A/B corrected sp ecications.
4
Dynamic accuracy refers to measurement accuracy as power varies (in dB) from a 0 dBm reference.
2565C, 50 MHz, calibration and measuremen t at the same temperature.
5
DC mo de, 2565
C, calibration and measurement at the same temperature.
General Information 1-3
Table 1-2. Agilent 85037B Specifications
1
Connector
Frequency Range
3.5 mm (m)
0.01 to 26.5 GHz
Return Loss
0.01 to 0.04 GHz 10 dB
0.04 to 18 GHz 20 dB
18 to 26.5 GHz 18 dB
Frequency Response
0.01 to 0.04 GHz
0.04 to 18 GHz
18 to 26.5 GHz
2
6
0.35 dB
6
0.18 dB
6
0.22 dB
Dynamic Range
ACmode +20 to055 dBm
DC mode +20 to050 dBm
DC Absolute Power Accuracy
Power Corrected
3,5
3
(dBm) (6dB) (6dB)
+20 0.25 0.40
+10 0.11 0.40
0
30 0.11 0.40
0
40 0.40 0.80
0
50 0.85 1.30
AC Dynamic Power Accuracy
3,4
Default
Power Corrected Default
(dBm) (6dB) (6dB)
+20 0.25 0.40
+10 0.11 0.40
0
30 0.11 0.40
0
40 0.40 0.80
0
50 0.85 1.30
0
55 0.85 1.30
Temp erature Co ecient of Linearity
1
The 85037A/B sp ecications only apply when used with the 8757D scalar network analyzer.
2
0
10 dBm, 2565C
3
The corrected sp ecications apply after a calibration via the 8757D Option 002 in
The default sp ecications apply when the calibrator is not used. P
0.01 dB/C temp. change after calibration.
ternal calibrator.
ower calibrator uncertaintyis
included in the 85037A/B corrected sp ecications.
4
Dynamic accuracy refers to measurement accuracy as power varies (in dB) from a 0 dBm reference.
2565
C, 50 MHz, calibration and measuremen t at the same temp erature.
5
DC mode, 2565
C, calibration and measurement at the same temperature.
1-4 General Information
Table 1-3. Supplemental Characteristics
Cable Length
Weight
Net 0.24 kg (0.5 lb)
Shipping 1 kg (2.2 lb)
RF Connector Mechanical Tolerances
Type-N male
Recession of the male center conductor 0.207 to 0.210 in
Precision 7 mm
Recession of the center conductor
Collet resilience After you depress the collet, it must spring back out.
Precision 3.5 mm
Recession of the male center conductor 0 to 0.003 in
1
Because a typ e-N gage calibration blo ck zeros the gage at a 0.207 inch oset, the gage displa
0.000 to 0.003 inches.
2
With the center conductor collet removed.
(85037A)
(85037A Option 001)
2
(85037B)
1.22m (48 in)
1
0 to 0.003 in
ys a 0.207 to 0.210 inch oset as
General Information 1-5
Table 1-4. Recommended Test Equipment
Critical
Item
Specications
Type-N Connector Gage Kit Required for 85037A
Agilent Model or
Part Number
85054-80011
No substitute
7 mm Connector Gage Kit Required for 85037A Option 001
85050-80012
No substitute
3.5 mm Connector Gage Kit Required for 85037B
11752-60105
No substitute
Collet Extractor Tool Required for 85037A Option 001
5060-0370
No substitute
Synthesized Sweeper Compatible with 8757D 83620A/30A
Scalar Network Analyzer No substitute 8757D
Directional Bridge Compatible with 8757D
85027A/B/C
AC/DC detection
Power Meter 436A, 437B or 438A
Calibrated Power Sensor Type-N
Precision 7 mm
Precision 3.5 mm
10 dB Attenuator Type-N
Precision 7 mm
Precision 3.5 mm
8481A
8481A Option 001
8485A
8491B Option 010
8492A Option 010
8493C Option 010
Calibrated Short Type-N 11511A
Shielded Open Type-N 85032-60001
Calibrated Short/Shielded Open Precision 3.5 mm 85037-60001
Precision 7 mm 85021-60001
Adapter Type-N (f ) to BNC (m)
Type-N (m) to Type-N (m)
3.5 mm (f ) to 3.5 mm (f )
Type-N (m) to APC-7
1250-1534
1250-1475
1250-1749
11525A
(Option 001 only)
Torque Wrench Precision 7 mm 12 in-lb
8710-1766
(85037A Option 001)
20 mm 8 in-lb (85037B) 8710-1764
1-6 General Information
Installation
2
Safety
Considerations
Initial Inspection
There are no hazardous voltages in this detector.
1. Check the shipping container and packaging material for damage.
2. Check that the shipment is complete.
3. Check connector, cable, and detector body for mechanical damage.
4. Check the detector electrically:
Either make a measurement or test to specications. (See Chapter
3, \Operation" or Chapter 4, \Performance Tests.")
If any of the following conditions exist, notify your nearest Agilent
oce:
incomplete shipment
mechanical damage or defect
failed electrical test
If you nd damage or signs of stress to the shipping con
cushioning material, keep them for the carrier's inspection. Agilent
does not wait for a claim settlement before arranging for repair or
replacement.
tainer or the
Installation 2-1
Preparation for Use
Caution
Electrostatic Discharge
(ESD)
Do not subject the detector to mechanical shock.
ESD can damage the highly sensitive microcircuits in this device;
charges as low as 100 V can destroy a detector.
ESD damage occurs most often as you connect or disconnect a
device. Use this detector at a static-safe workstation and wear a
grounding strap.
Never
touch the input connector center contacts or
the cable contact pins.
Static-Safe
Workstation
Figure 2-1 illustrates a static-safe station using twotypes of ESD
protection that you can use either together or separately.
A conductive table mat and wrist-strap combination.
A conductive oor mat and heel-strap combination.
2-2 Installation
Figure 2-1. Example of a Static-Safe Workstation
Static-Safe
Practices
Before cleaning, insp ecting, or making a connection to a
static-sensitive device or test port, ground yourself as far as
possible from the test p ort.
Discharge static electricity from a device b efore connecting it:
Touch the device briey (through a resistor of at least 2 M) to
either the outer shell of the test port, or another exposed ground.
This discharges static electricit y and protects test equipmen
circuitry.
t
Power Requirements
The scalar network analyzer supplies power for the detector.
Cable Lead
Identification
Mating Connectors
Caution
Connecting an
85037A/B
When you use more than one detector, use the coded cable clips
(from the cable marker kit) to identify leads; place matching clips on
each cable, one at each end.
Table 1-3 lists connector mechanical tolerances.
Connector Care
(08510-90064) provides information on the proper
Microwave
maintenance, inspection, and gaging of connectors. Use the
appropriate torque wrench. (See Table 1-4.)
When tightening a connector, do not apply more than the
recommended torque value. If you torque the connectors with more
pressure than is recommended it can deform the mating surfaces.
Connect a detector to the network analyzer as follows:
1. With the cable plug key downward, insert the DC connector into
the analyzer mating connector.
outer
2. To secure the DC connector in the analyzer, turn the
shell
clockwise.
3. For a standard detector, connect the RF input b
male connector
outer
shell clo ckwise.
y turning the
4. For a precision (Option 001) 7 mm connector, refer to Figure 2-2.
Figure 2-2. Using Precision 7 mm Connectors
Installation 2-3
Mating a Precision 3.5 mm Connector to an SMA Connector
It is possible to mate a precision 3.5 mm connector to an SMA
connector, but this is not ideal because the two connectors have
slightly dierent dimensions and mechanical characteristics. Mating
a precision 3.5 mm connector to an SMA connector also aects the
electrical performance. (See \Electrical Performance".) Use the
following procedure to safely mate 3.5 mm and SMA connectors.
1. Insp ect the SMA connector.
Never mate a precision 3.5 mm connector to an SMA connector
in which the solid plastic dielectric protrudes in front of the outer
conductor mating plane.
2. Gage both connectors. The SMA connector must meet the
precision 3.5 mm connector setback specications. If not, it will
damage the 3.5 mm connector.
In some SMA connectors, the male contact pins are not held
securely and are easily pulled out of sp ecication (especially if
the female connector contact ngers are tight). Also, some SMA
male pins are not true pins, but are the cut-o ends of the cen
ter
conductor in semi-rigid coaxial cable. In this case, misalignmen
and burrs are likely to o ccur.
t
3. Carefully align the connectors.
4. Push the two connectors together with the male contact pin
precisely concentric with the female.
5. Do not twist either connector or device.
6. Turn only the outer male connector nut.
7. Use a 60 N-cm (5 in-lb) torque wrenc
h for the nal connection.
If you must make more than a few connections, use a 3.5 mm-to-3.5
mm adapter to protect the 3.5 mm connector.
Electrical Performance.
The electrical performance of the junction of
two precision 3.5 mm connectors is superior to the junction of either
two SMA connectors, or an SMA connector mated to a precision 3.5
mm connector. (See Figure 2-3.)
When you mate an SMA connector with a precision 3.5 mm
connector, the connection has a typical mismatch (SWR) of
1.10 at 2 GHz. This mismatch is less than that of two SMA
connectors, but is much higher than that of two precision 3.5 mm
connectors.
2-4 Installation
Figure 2-3. SMA and 3.5 mm Connector Cross-Sections and SWR P
erformance
Installation 2-5
Operating
Environment
Temperature
Humidity
: Up to 95%. Protect the detector from temperature
: 0C to +55C.
extremes, which can cause condensation.
Storage and
Shipment
Environment
Packaging
Altitude
: Up to 7,620m (25,000 ft).
Store or ship the detectors in environments within the follo wing
limits:
Temperature:0
Humidity
: Up to 95%. Protect the detector from temperature
25C to +75C.
extremes which can cause condensation.
Altitude
: Up to 7,620m (25,000 ft).
Containers and materials identical to those used in factory-packaging
are available. Contact your local Agilent oce for information. If you
package the detector using commercially available material, follow
these instructions:
1. Wrap the detector in heavy paper.
2. Use a strong shipping container that has a double-wall carton of
at least 350-pound test material.
3. Provide a rm cushion that prevents movement inside the
container.
4. Use a 5 to 7 cm (3 to 4 inch) layer of shock-absorbing material
around all sides of the detector.
5. Seal the shipping container securely.
6. Mark the shipping container
FRAGILE
.
2-6 Installation
Returning a
Detector for Service
If you ship the detector to a Agilent oce or service center ll out a
blue service tag (provided at the back of this manual), and include
the following information:
1. Company name and address.
Do not
cannot be returned to a P.O. b ox.
2. A technical contact person with a complete phone number.
3. The complete model and serial number of the detector.
4. The type of service required (calibration, repair).
5. Any other information, such as failure condition or cause, that
could expedite service.
When you make an inquiry, either by mail or by telephone, refer to
the detector by both mo del number and full serial number.
use an address with a P.O. boxnumber because products
Installation 2-7
Operation
3
Operating Theory
AC Detection
DC Detection
Cautions
The 85037A/B can detect either unmodulated RF signals (DC mo de)
or square wave amplitude modulated RF signals (AC mo de). In
either detection mode, the detector provides a 27.778 kHz square
wave signal to the analyzer to interpret and display.
In AC detection, an RF or microwave signal is amplitude mo dulated
with a 27.778 kHz square wave. The detector demodulates (envelope
detects) and amplies this signal to produce a 27.778 kHz square
wave whose peak-to-peak voltage corresponds to the magnitude of
the original RF signal.
DC mo de requires no modulation. The detector dio de con
verts
the RF signal into DC voltage which is then chopped at a
27.778 kHz rate and amplied. The amplied signal is a signal
like that pro duced byAC detection.
Electrostatic discharge (ESD) can damage the highly sensitive
microcircuits in this device; charges as low as 100 V can destroyyour
detector.
ESD damage occurs most often as you connect or disconnect a
device. Use this detector at a static-safe workstation and wear a
grounding strap.
Never
touch the input connector center contact, or
the cable contact pins.
Do
not
exceed the recommended torque sp ecication to tighten a
connector b ecause greater surface torque can deform the mating
surfaces.
Do
not
apply more than +23 dBm RF CW power or more
than610 Vdc to the detector. Higher power/voltage can electrically
damage the detector.
Before you connect a cable to the detector, always discharge the
cable's center conductor static electricity to instrument-ground.
Do not subject the detector to mechanical shock.
Operation 3-1
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