Tektronix 495 User manual

The test & measurement
equipment you need at
the price you want.
Alltest carries the world’s largest selection of
used/refurbished benchtop test & measurement
equipment at 50% the price of new.
O
Our equipment is guaranteed working, warrantied, and
available with certified calibration from our in-house staff
of technicians and engineers.
• 10+ full time technicians with over 150 years of
specialization
• 90 day warranty & 5 day right of return on all
equipment
•
• 1-3 year warranties for new and
premium-refurbished equipment
• Every unit tested to OEM specifications
• Satisfaction guaranteed
You have plans, we will help you achieve them.
Any project. Any budget.
Get a quote today!
CCall [phone] or email [e-mail].
t
Alltest Instruments, Inc.
500 Central Ave.
Farmingdale, NJ 07727
P: [phone]
F: [phone]
alltest.net
s
[e-mail]

Qservice ----- This document is a complete scan from the original manual ----- Qservice

Copyright @ 1986 Tektronix, Inc. All rights reserved.
Contents of this publication may not be reproduced in
anyform without thewritten permissionof Tektronix, Inc.
Products of Tektronix, Inc. and its subsidiaries are
covered by U.S. and foreign patents and/or pending
patents.
TEKTRONIX, TEK, SCOPE-MOBILE, and
@ are
registered trademarks of Tektronix, Inc. TELEQUIP-
MENT is a registered trademark of Tektronix U.K.
Limited.
Printed in U.S.A. Specification and price change
privileges are reserved.
Tektronix, Inc.
P.O. Box 500
Beaverton, Oregon 97077
Serial Number

4951495P Operators
PREFACE
This manual is one of a set of product manuals for
the TEKTRONIX 495 and programmable 495P Spectrum
Analyzer. The manual describes the instrument installa-
tion and operation. These instructions assume a
thorough knowledge of frequency domain analysis. The
purpose of this manual is to explain the operation of the
spectrum analyzer so that measurements will be mean-
ingful whether made under adverse or laboratory condi-
tions. The manual organization is shown in the Table of
Contents. The manuals that are available now in addition
to this Operators Manual are the
0 4951495P Service Manuals, Volume 1 and 2 (stan-
dard accessories) and
495P Programmers Manual (standard accessory for
495P only).
There will be two additional publications available
shortly; 495/495P Operators Handbook (optional acces-
sory), and a Programmers Reference Guide. For manual
ordering information, contact your local Tektronix Field
Office or representative or refer to the Accessories por-
tion of the Replaceable Mechanical Pans list in the Ser-
vice Manual, Volume 2.
Standards and Conventions Used
Most terminology is consistent with standards
adapted by IEEE and IEC. A glossary of terms is pro-
vided in Appendix A. Abbreviations in the documentation
are consistent with ANSl Y1.l-1972. GPIB functions con-
form to the IEEE 488-1978 Standard. Copies of ANSl and
IEEE standards can be ordered from the Institute of
Electrical and Electronic Engineers Inc.
Change/History lnformation
Any change information that involves manual correc-
tions or additional information is located behind the
tabbed Change lnformation page at the back of this
manual.
History information, as well as the updated data. is
combined within this manual when the page(s)is revised.
A revised page is identified by a revision date located in
the lower inside corner of the page.
Unpacking and Initial Inspection
lnstructions for unpacking and preparing the instru-
ment for use are described in Section
3.
Storage and Repackaging
Instructions for short- and long-term storage and
instrument repackaging for shipment are described in
Section
3.

495/495P Operators
TABLE OF CONTENTS
Page
PREFACE
...................... ...... ......................................... i
TABLE OF CONTENTS
..................... .. ......................... ii
LIST OF ILLUSTRATIONS
................... .. ...................... iv
LIST OF TABLES
............................................................. v
SAFETY SUMMARY ..................... ... .......................... vi
Section 1
Section
2
Section 3
Section 4
GENERAL INFORMATION
Product Overview
.................................... 1-1
Firmware Version and Error Message
Readout
.............................................. 1-1
Accessories
........................................ 1-1
Options
........................ .. ................... 1-2
SPECIFICATION
Electrical Characteristics
......................... 2-1
Verification of Tolerance Values
.......... 2-1
Frequency Related Characteristics
..... 2-1
Amplitude Related Characteristics
...... 2-4
Input Signal Characteristics
................ 2-8
............
Output Signal Characteristics 2-1 0
General Characteristics ..................... 2-11
Power Requirements
......................... 2-11
Environmental Characteristics
........... 2-12
Physical Characteristics
.................... 2-13
PREPARATIONFOR USE
Unpacking and Initial Inspection
.............. 3-1
Installation
............................................. 3-1
Rackrnount Instrument
........................ 3-1
Rack Adapter Kit
......................... ..... 3-2
Power Source and Power
Requirements
.................... .. ................. 3-2
Storage and Repackaging
....................... 3-2
Storage
............................... ........ ........ 3-2
Repackaging for Shipment
.................. 3-2
Transit Case
............... ....... ............ 3-2
CONTROLS. CONNECTORS.
AND INDICATORS
....................................
Operating Modes 4-1
Initial Entry Functions (Black Labels)
.. 4.1
Multiple-Pushbutton Sequence
Functions (SHIFT Pushbuttons)
.......... 4-1
Terminating Multiple-Pushbutton
Sequences
....................................... 4-1
DATA ENTRY Functions (Orange
Labels)
.............................. .. ............ 4-2
Page
Section
4 (continued)
Correcting Numerical Entry Errors ...... 4-2
lnstrument Power Control and
Frequency
................................................ 4-3
Frequency Span and Resolution
.............. 4-5
Marker Functions
................... ... ........ 4-7
Display Parameters
............................... 4-14
Sweep
............................................... 4-17
Digital Storage
....................................... 419
Display and General Purpose
................ 4-21
Front-panel Input/Outputand GPIB
....... 4-24
Rear-panel Input/Output and GPIB
........ 4-26
Section
5 INSTRUMENT CHECK OUT
Firmware Version and Error Message
Readout
................................................ 5-1
Firmware Version
................................ 5-1
Error Message Readout
...................... 5-1
Preparation for Use
................................. 5-1
1
. Initial Turn On ............................... 5-1
2 .Calibrate Position. Center
Frequency. Reference Level. and
Bandwidth
........................................... 5-2
Functional or Operational Check
............. 5-3
Equipment Required
.............. ... ....... 5-3
Preliminary Preparation
...................... 5-3
1
. Check Operation of Front-Panel
Pushbuttons and Controls
................... 5-3
2
. Check Gain Variation Between
Resolution Bandwidths
..................... 5-10
3
. Check Span Accuracy and
Linearity
.......................... ............. ... 5-11
4
. Check Resolution Bandwidth and
............. ................. Shape Factor .. 511
5 . Check Reference Level Gain and
RF Attenuator Steps
......................... 5-12
6
.Check Sensitivity ......................... 5-12
7 . Check Residual FM ....................... 5-13
8
. Check Frequency Drift or
............................................. Stability 3
9 . GPlB Verification Program ............ 5-13
Section
6 OPERATION
Instrument Operating Features
................ 6-1
Firmware Version and Error Message
Readout
.............................................. 6-1
Crt Light Filters
................................... 6-1
Intensity Level and Beam Alignment
... 6-1
Signal Application
................... .. ....... 6-1
A RF INPUTConnector ..................... 6-1
iii

495/495P Operators
Page Page
Section
6 (continued)
Resolution Bandwidth. Frequency
Span. and Sweep Time
....................... 6-2
Usingthe HELP Feature
............ .. ..... -6-3
Usingthe Signal Identifier
................... 6-3
Using the Video Filters
........................ 6-4
Using Time Domain Operation
............ 6-4
Triggering the Display
......................... 6-4
Sweeping the Display
.......................... 6-5
Manual Scan of the Spectrum
............. 6-5
Reference Level. RF Attenuation. and
Vertical Display
................................. -6-5
Alternate Reference Level Units
Selection
............................................. 6-6
Usingthe Delta
A Mode ...................... 6-6
Using MIN NOISE or MIN
DISTORTION
....................................... 6-6
Using Digital Storage
.......................... 6-6
Usingthe Store and Recall Features
.. 6-7
Usingthe Counter
............................. 6-8
Plotting the Display
............................. 6-8
Usingthe Markers Feature
................. 6-8
Marker Terms
..................................... 6-8
Marker Turn On
....................... .. ...... 6-8
Marker Menu and Assign Menu
.......... 6-9
Assigning Markers
.............................. 6-9
Tuning Markers
................................... 6-9
Error Detection
.................................. 6-10
Using the Automatic Performance
Testing Feature
................................. 6-1 0
Usingthe Tracking Generator Mode . 6-10
Usingthe Sideband Analyzer Mode
.. 6-10
Programming Features (495P GPlB
.............................................. Operation) I 1
Setting GPlB Address Switches
........ 6-11
TALK ONLY. LISTEN ONLY
............................................ Switches 61 1
Connecting to a System .................... 6-1 1
Operational Considerations/
Precautions
........................................... I 1
1 . A RF INPUTPower Limit ............ 6-11
2
. Instrument Warm-up After
Storage
......................................... I 1
3
. Auto Resolution ............... ......... 6-1
Section
6 (continued)
4
.Level of Pulsed Signals ................. 6-11
5 . Level of Continuous Wave Signals6-12
......... 6.Excessive Input Signal Level 6-12
7 . No Crt Trace ................................. 6-12
8
. PEAKIAVERAGE ........................... 6-12
9
. Digital Storage Effects on Signal
Analyses
.......................................... 6-12
10
. Stored Display Averaged in Wide
Spans
............................................... 6-12
11
. Automatic Calibration of Relative
Amplitudes of Resolution Bandwidth
Filters
.............................. ......... ...... 2
12 . TRIGGERING .............................. 6-12
Service Information
............................. 6-12
Service Manual
.................................. 6-12
........ Product Service .................... .. 5-13
Emergency Repair
............................ 6-13
Maintenance Agreements
.................. 6-13
Section 7 OPTIONS
Options A1-A5 (Power Cord Options).7-1
Options MI-M3 (Extended Service
and Warranty Options)
........................ 7-1
Option 05 (Provides frequency
counter and macros)
..................... .... . 7-2
Option 07
! (Provide 75fl Input) .......... 7-2
Options 30 and 31 (Provide
Rackmount)
....................................... 7-3
Option 39 (Provide Silver Battery)
....... 7-5
Option 42 (Provide 110 MHz IF
................................................ Output) 7-5
Option 45 (Provide MATECO
..... ................................. Capability) .. 7-5
Option 52 (Provide North American
220
V) ................. .. ......................... 7-5
Appendix A GLOSSARY
GeneralTerms
................................... A-1
Terms Related to Frequency
.............. A-1
Terms Related to Amplitude
............... A-2
Terms Related to Digital
Storage
............................................. A.3
Terms Related to Markers .................. A-3

495/495P Operators
LlST OF TABLES
Table
Number Page
Frequency Related Characteristicss
.................. 2-1
Amplitude Related Characteristics
................... ..2-4
Input Signal Characteristics
...................... ... ...... 2-8
Output Signal Characteristics
.......................... 2-10
General Characteristics
............................. ....,. 2-11
Power Requirements ....................... .. ........., 2 1
EnvironmentalCharacteristics
......................... 2-12
Physical Characteristics ............................... 2 3
Table
Number Page
6-1 50
S2 System Reference Level Conversion ........ 6-2
6-2 Marker Trace Organization
............................. 6-10
7-1 Power Cord Options
......................... ... ....... 7-1
7-2 Extended Service and Warranty Options
........... 7-2
7-3 Option 07 Alternate Specifications
..................... 7-2
7-4 Options 30 and 31 Characteristics and
Alternate Specifications
............. .... ............... 7-4
7-5 Option 42 Alternate Specifications
............,.... -7-5
5-1 Sensitivity
...................................................... 5-12
LlST OF ILLUSTRATIONS
Figure
Number Figure
Page Number Page
Dimensions.
................................................... 2 5
Instrument Power Control and Frequency
......... 4-3
Frequency Span and Resolution
....................... 4-5
Marker Functions
............................................... 4-7
Locatingthe signal peak ................................... 4-8
Using <green-SHIFT> PEAK FIND
................ 4-10
Signal finding example .................................. 4 1
Signal finding example
................................... 4 2
Signal finding example
................................... 4 2
Signal finding example
................................... 413
Signal finding example
...................... ... .,....... 4-13
Display Parameters .............. .. ..................... 414
Sweep
.......................................................... 4 7
Digital Storage .......................... .. ................. 4 9
Display and General Purpose ......................... 4-21
Front-Panel Input/Output and GPIB
................ 4-24
Rear-PanelInput/Output and GPIB
................. 4-26
Crt display and readout at initial turn on
............ 5-1
Typical display of calibration markers in the
maximum span position
.................................... 5-2
integrating a display with the VIDEO FILTER
.... 5-5
Using the IDENT feature to identify a real or
true response
................................................. 5-6
Displays that illustrate how bandwidth and
shape factor are determined
....................... ..5-1 1
Typical display showing how to determine
residual
FM ........................................... 5-14
Circuit of a 75 to 50
R matching pad (ac
coupled)
............................................................ 6-2
Graph illustratingthe relationship between
dBm, dBmV, and dB
............................. ............ 6-2
Volts-dBm-Watts conversion chart for 50
R
impedance .............................. . ...... ......... . .......... 6-3
Typical example of Identifier mode displays
...... 6-4
Typical display mixed with the VIDEO FILTER ..6-5
Typical display using B-SAVE A to observe
the difference between SAVE
A and B displays6-7
International power cord options for the
spectrum analyzer
.................. .. ..................... 7-1

495/495P Operators
SAFETY SUMMARY
(Refer all servicing to qualified servicing personnel)
The safety information in this summary is for both
operating and servicing personnel. Specific warnings and
cautions will be found throughout the manual where they
apply, but may not appear in this summary.
CONFORMANCE TO INDUSTRY
STANDARDS
This instrument complies with the following Industry
Safety Standards and Regulatory Requirements.
Safety
CSA: Electrical Bulletin
FM: Electrical Utilization Standard Class 3820
ANSI (239.5 - Safety Requirements for Electrical
and Electronic Measuring and Controlling
Instrumentation.
IEC 348 (2nd edition) - Safety Requirements for
Electronic Measuring Apparatus.
Regulatory Requirements
VDE 0871 Class B - Regulations for RFI Sup-
pression of High Frequency Apparatus and Instai-
lations.
TERMS
In This Manual
CAUTION statements identify conditions or practices
that could result in damage to the equipment or other
property.
As Marked on Equipment
CAUTION indicates a personal injury hazard not
immediately accessible as one reads the marking, or
a
hazard to property, including the equipment itself.
DANGER indicates a personal injury hazard immedi-
ately accessible as one reads the marking.
SYMBOLS
In This Manual
This symbol indicates where applicable cau-
tionary or other information is to be found.
As Marked on Equipment
DANGER - High voltage.
@ Protective ground (earth) terminal.
ATENTION
- refer to manual.
0
Refer to manual
WARNING statements identify conditions or practices
that could result in personal injury or loss of life.

495/495P Operators
POWER OPERATIONAL PRECAUTIONS
Power Source Do Not Operate in Explosive Atmospheres
This product is intended to operate from a power
source that will not apply more than
250 V rms between
the supply conductors or between either supply conduc-
tor and ground.
A protective ground connection by way
of the grounding conductor in the power cord is essential
for safe operation.
Groundingthe Product
This product is grounded through the grounding con-
ductor of the power cord. To avoid electrical shock, plug
the power cord into a properly wired receptacle before
connecting it to the product input or output terminals. A
protective ground connection by way of the grounding
conductor in the power cord is essential for safe opera-
tion.
Danger From Loss of Ground
Upon loss of the protective-ground connection, all
accessible conductive parts (including knobs and con-
trols that may appear to be insulating) can render an
electric shock.
Use the Proper Power Cord
Use only the power cord and connector specified for
your product.
Use only a power cord that is in good condition.
Refer cord and connector changes to qualified ser-
vice personnel.
For detailed information on power cords and connec-
tors, see the Maintenance section in the Service Manual,
Volume
1.
Use the Proper Fuse
To avoid fire hazard or equipment damage, use only
the fuse of correct type, voltage rating, and current rating
for your product (as specified in the Replaceable Electri-
cal Parts list in Volume
2 of the Service Manual). Refer
To avoid explosion, do not operate this product in an
explosive atmosphere unless it has been specifically
certified for such operation.
Do Not Remove Covers or Panels
To avoid personal injury, do not remove the product
covers or panels unless you are qualified to do so. Do
not operate the product without the covers and panels
properly installed.
Dangerous voltages exist at several points in this
product. To avoid personal injury, do not touch exposed
connections and components while power is on. REFER
ALL SERVICING TO QUALIFIED SERVICE PERSONNEL
fuse replacement to qualified service personnel.
vii

495/495P Operators
IEFERENCE LEVEL-> MIN RF ATTEN d8
TEKTRONIX 495P Programmable Spectrum Analyzer
viii

This Document was scanned from the original
Tektronix Service Manual
For enquiries about high quality technical manuals
[email protected]
This Document is a complete Scan from the original
Tektronix manual
For enquiries about our complete
High quality line of technical Manuals in PDF
mailto : [email protected]

Qservice ----- This document is a complete scan from the original manual ----- Qservice

General Information - 4951495P Operators
0 495/495P Operators Manual
0 495/495P Service Manual, Volume 1
495/495P Service Manual, Volume 2
495P Programmers Manual; 495P Only
Options
The Options section of this Manual contains informa-
tion on all of the options currently available for the spec-
trum analyzer.

Qservice ----- This document is a complete scan from the original manual ----- Qservice

Specification - 495/495P Operators
Table
2-1 (Continued)
FREQUENCY RELATEDCHARACTERISTICS
h Characteristic
Initial Accuracy (Continued)
1 st LO Phase Locked
(Spanldiv
6200 kHz)
Drift
After
30 minute warm up
I st LO Unlocked I
(S~anldiv >200 ~HZ) I
1 st LO Locked I
I st LO Unlocked
(Spanldiv
> 200 kHz)
(Spanldiv
6200 kHz)
Residual FM
1 st LO Unlocked
(Spanldiv
> 200 kHz)
I st LO Locked
(Spanldiv
(200 kHz)
Static Resolution Bandwidth
(6 dB
down)
Shape Factor
(60 dB16 dB)
30 Hz Resolution Bandwidth
Other Bandwidths
I1
I Noise Sidebands
I
Performance Requirement 1 Supplemental Information
* ((20%D) + (CF x 10-5). 15 Hz]
I
Where:
D
- SPANIDIV or RESOLUTION
BANDWIDTH, whichever is
greater
CF
- Center Frequency I
With constant ambient temperature
Typically
625 kHz per minute.
/ ~~~icall~~l 50 Hz per minute.
I
Typically 65 kHz per minute.
(10 Hz total excursion in 20 ms
650 Hz per minute
67 kHz total excursion in 20 ms
Not significant when compared to
Residual
FM per minute of sweep
time.
Correction will occur at the end of
sweep for sweep times
25 s/div
At least
10% of SPANIDIV to
minimum of
1 Hz.
Short term, after
1 hour warm up.
121 or less
I
Within 20% of selected bandwidth
7.5:l or less
At least
-75 dBc at an offset of 30 x
resolution bandwidth (-70 dBc for
30 Hz, then 100 Hz to 1 MHz in
decade steps.
.Over the operating temperature range this term is (CF x 1.5 x lo-@)

Specification - 4951495P Operators
Table
2-1 (Continued)
FREQUENCY RELATED CHARACTERISTICS
Characterisffc Performance Requirement
Video Filter
Narrow
Wide
Pulse Stretcher Fall Time
Frequency Span/Div
Range
Accuracy/Linearity Within
5% of the selected SpanIDiv
Frequency Response
and Display Flatness
About the midpoint
between two extremes 21.0 dB
Supplemental Information
Reduces video bandwidth to approxi-
mately 11300th of the selected reso-
lution bandwidth and 1/100th for
30 Hz bandwidth (0.3 Hz).
Reduces video bandwidth to approxi-
mately 1130th of the selected resolu-
tion bandwidth and 1110th for 30 Hz
bandwidth (3 Hz).
30 ps/div of pulse amplitude.
20 Hzldiv to 100 MHz/div (in a 1-2-5
sequence with SPANIDIV) or to 170
MHz/div (by two significant dig~ts
from the DATA ENTRY pushbuttons).
Also, MAX SPAN provides
a full
band display, and ZERO SPAN pro-
vides
a 0 Hz display. With ZERO
SPAN the horizontal axis is cali-
brated in timeldiv instead of
f requencyldiv.
Measured over the center
8 divisions
of the display.
Frequency response is measured
with 10dB of RF attenuation.
Response is affected by:
0 input vswr
gain variation
mixer conversion
Refer to Options 30 and 31 in the
Options section for alternate
specification.
When activated, the marker is a
bright dot positioned by the
CENTERIMARKER FREQUENCY
control or the DATA ENTRY pushbut-
tons.

Specification - 495/495P Operators
Marker(s) (Continued)
A MKR Accuracy
Table
2-1 (Continued)
FREQUENCY RELATEDCHARACTERISTICS
* 1 % of the total span
Characterlstfc
I
Performance Requirement
For the live trace.
AMKR activates a second marker at
the position of the single marker on
the trace. Parenthesis appear on the
marker display line indicating that the
delta mode is active. The display
shows the difference in frequency
and amplitude.
1 --MKR-2 selects
which marker is tuned.
Supplemental Information
Table
2-2
AMPLITUDE RELATEDCHARACTERISTICS
A MKR Resolution
Performance Requirement
( At least 10% of Span/Div
Vertical Display Modes
Reference Level
(top of graticule)
Range
Log Mode
Linear Mode
Steps
10 dB/div Log Mode
2 dB/div Log Mode
Linear Mode
Supplemental information
10 dB/Div, 2 dB/Div, and Linear -
any integer between 1-1 5 dB/Div
can also be selected with the DATA
ENTRY pushbuttons.
From
-117 dBm to +40 dBm: +40
dBm includes 10 dB of IF gain
reduction
(+30 dBm is the maximum
safe input). Alternate reference levels
are: dBV
(-130 dBV to +27 dBV)
dBmV (-70 dBmV to +87 dBmV)
dBuV (-10 dBuV to +I47 dBpW
39.6 nV/Div-2.8 V/Div
(Maximum safe input level is
1 W cw
or 10 V peak)
10 dB for the Coarse Mode
1 dB for the Fine Mode
1 dB for the Coarse Mode
0.25 dB for the Fine Mode
1-2-5 sequence for Coarse Mode
1 dB equivalent steps for Fine Mode

Specification - 495/495P Operators
Table
2-2 (Continued)
AMPLITUDE RELATEDCHARACTERISTICS
Reference Level (Continued)
Set with DATA ENTRY push-
Accuracy
Display Dynamic Range
Accuracy
10dB/div Log Mode
2 dB/div Log Mode
Linear mode
Performance Requirement
r 1.0 dB110 dB to a maximum cumu-
lative error of k2.0 dB over 80 dB
range
k0.4 dB12 dB to a maximum cumu-
lative error of r1.0 dB over 16 dB
range
r5%of full scale
Supplemental Information
Steps correspond
to the display
mode in coarse; except, for
2 dB/Div
when the steps are 1 dB.
In Fine Mode:
1 dB when the mode is
5 dB/div or
more
0.25 dB for display modes of
4 dB/div or less (referred to as
Delta A Mode)
Dependent on the following charac-
teristics:
0 RF Attenuation Accuracy
IF Gain Accuracy
0 Resolution Bandwidth
Display Mode
Calibrator Accuracy
Frequency Response
<blue-SHIFT> CAL routine re-
duces error between resolution
bandwidths at -20 dBm REF
LEVEL. Other reference
levels may have larger
errors.
0 Ambient Temperature Change
(k0.15 dB/OC maximum,
typically, k0.05 dB/"C)
The input RF attenuator steps 10 dB
for reference level changes above
-30 dBm (-20 dBm when MIN
NOISE is active) unless the MIN RF
AlTEN setting is greater than zero.
The IF gain increases 10 dB for each
10 dB reference level change below
-30 dBm (20 dBm when MIN NOISE
is active)
80 dB maximum for log mode
8 divisions for linear mode

Specification - 495/495P Operators
Table
2-2 (Contlnued)
AMPLITUDE RELATEDCHARACTERISTICS
Characteristic
Gain Variation Between Resolution
Bandwidths
Performance Requirement
RF Attenuator
Range
Accuracy
Dc-1 800 MHz
Marker(s)
With respect to 1 MHz Filter
I
I ~~t0.4dB
Within 0.5 dB110 dB to a maximum
of 1 dB over the 60 dB range
--
I Between Any Two Filters I <0.8 dB
IF Gain
Range
Supplemental Information
0-60 dB in 10dB steps
Accuracy
1 dB Step
DecadeTransitions
-29 to -30 dBm
-39 to -40 dBm
-49 to -50 dBm
-59 to -60 dBm
Maximum Deviation over
When activated, the marker is a
bright dot positioned by the
CENTER/MARKER FREQUENCY
control.
Identical to REF LEVEL accuracy
plus cumulative error of display scale
(dependenton vertical position)
AMKR activates a second marker at
the position of the single marker on
the trace. Parenthesis appear on the
marker display line indicating that the
delta mode is active. The display
shows the difference in frequency
and amplitude.
1 --MKR--2 selects
which marker is tuned.
At least 0.2 dB/dB step to
0.5 dB19 dB steps except at the
decade transitions
0.5 dB or less
k2dB
Measurement conditions:
0 measured at -20 dBm
0 minimum distortion Mode
0 after front-panel CAL adjustments
87 dB of gain increase, 10 dB of gain
decrease (MIN NOISE activated), in
10 dB and 1 dB steps. Steps are
monotonic (all inthe same direction).
Maximum 1 dB cumulative error over
10 dB

Specification - 4951495P Operators
Table
2-2 (Continued)
AMPLITUDE RELATEDCHARACTERISTICS
Performance Requirement
-1 00 dBm or less
-70 dBc or less
-24 dBm or less
-60 dBc or less
-70 dBm or less
Supplemental Information
Delta A Mode provides differential
measurements in
0.25 dB incre-
ments.
(This is not related to the Delta
Marker Mode.)
Maximum range of
57.75 dB depen-
dent on reference level when the
Delta A Mode is activated.
Difference
0.25 dB 0.15 dB
0.4 dB
10 dB 1.0 dB
20 to 80 to
57.75 dB 231 dB 2.0 dB
Equivalent maximum input nose for
each resolution bandwidth.
Measuredwith:
a 0 dB attenuation (MIN RF
ATENdB
0)
NARROW VIDEO FILTER
a 2 dB/DIV Log Mode
a DIGITALSTORAGEOn
MAX HOLD Off
a PEAKIAVERAGE in Average
1 SEC TIMEIDIV
a ZERO SPAN On
a Input terminated in 50 i-2
(See Option 07 in the Options section
for alternate specifications.)
No input signal
(See Options
30 and 31 in the
Options section for alternate
specifications.)
- -
Measured from any two on-screen
signals within any frequency span.
In Minimum Distortion Mode
Referenced to input with
0 dB
attenuation, terminated into
50n and
into open circuit.
Measured at
2S°C.
Measured across entire
band, with
-30 dBm input
and
0 dB attenuation.
With
0 dB RF Attenuation.