8647A Signal Generator Operation and Service Guide
08647-90006
March 1984
Title & Document Type:
Manual Part Number:
Revision Date:
HP References in this Manual
This manual may contain references to HP or Hewlett-Packard. Please note that HewlettPackard's former test and measurement, semiconductor products and chemical analysis
businesses are now part of Agilent Technologies. We have made no changes to this
manual copy. The HP XXXX referred to in this document is now the Agilent XXXX.
For example, model number HP8648A is now model number Agilent 8648A.
About this Manual
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Search for the model number of this product, and the resulting product page will guide
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Operation and Service
Guide
HP
SERIAL
This
3247A
8647A
NUMBERS
manual applies directly
and
3349A.
Signal Generator
to
all instruments
with
serial prefix
HP
Wt
NO.
Printed in
08647-90006
USA
March
1994
Notice.
The information contained in this document is subject to
change without notice.
Hewlett-Packard makes no warranty of any kind
material, including but not limited to, the implied warranties
with
regard to this
of
merchantability and fitness for a particular purpose. Hewlett-Packard
shall not be liable for errors contained herein or for incidental
or consequential damages in connection with the furnishing,
performance, or use of this material.
@
Copyright Hewlett-Packard Company 1994
All
Rights Reserved. Reproduction, adaptation, or translation without
is
prior written permission
prohibited, except
as
allowed under the
copyright laws.
CA,
1400 Fountaingrove Parkway, Santa Rosa
Reproduced with Permission, Courtesy
of
Agilent Technologies, Inc.
95403-1799, USA
Certification
Hewlett-Packard Company certifies that this product met its
published specifications at the time of shipment from the factory.
Hewlett-Packard further certifies 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
Regulatory
Information
The regulatory information is in Chapter
This Hewlett-Packard instrument product
4,
“Specifications.
is
warranted against defects
in material and workmanship for a period of one 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 warranty 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
software 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.
HEWLETT-PACKARD SPECIFICALLY DISCLAIMS THE IMPLIED
WARRANTIES
OF
MERCHANTABILITY AND FITNESS FOR
PARTICULAR PURPOSE.
EXCLUSIVE
REMEDIES
THE REMEDIES PROVIDED HEREIN ARE BUYER’S SOLE AND
EXCLUSIVE REMEDIES. HEWLETT-PACKARD SHALL NOT BE
ANY
LIABLE FOR
CONSEQUENTIAL DAMAGES, WHETHER J3ASED
OR
TORT,
ANY OTHER LEGAL THEORY.
DIRECT, INDIRECT, SPECIAL, INCIDENTAL,
ON
CONTRACT,
A
OR
iii
Assistance
Product maintenance agreements and other custom assistance
agreements are available
assistance, contact your nearest Hewlett-Rzckard Sales and Semvice
Ome.
page.
&fer to the list
for
Hewlett-Rzckard products.
of
Sales and Sewice
mr
O~es
on the following
any
iv
Hewlett-Packard Sales and Service
Offices
US
FIELD
HEADQUARTERS
OPERATIONS
Hewlett-Packard Company
19320 Pruneridge Avenue
Cupertino,
95014,
USA
CA
(800) 752-0900
California
Hewlett-Packard
Co.
1421 South Manhattan Ave.
Fullerton,
CA
92631
(714) 999-6700
Hewlett-Packard
Co.
301 E. Evelyn
CA
Mountain View,
94041
(415) 694-2000
Colorado
Hewlett-Packard Co.
24 Inverness Place, East
Englewood, CO 80112
(303) 649-5000
Georgia
Hewlett-Packard Co.
2000 South Park Place
GA
Atlanta,
30339
(404) 955-1500
Illinois
Hewlett-Packard Co.
5201 Tollview Drive
Rolling Meadows, IL 60008
(708) 255-9800
Hewlett-Packard 'hiwan
8th Floor, H-P Building
337 Fu Hsing North Road
'Mpei, Taiwan
(886 2) 712-0404
Ltd.
Ltd.
Ltd.
Co.
V
Safety
Notes
The following safety notes are used throughout this manual.
Familiarize yourself with each of the notes and its meaning before
operating this instrument.
Caution
Warning
Instrument
Markings
Caution denotes
not correctly performed or adhered to, would result in damage to or
destruction
until the indicated conditions are fully understood and met.
Warning denotes a hazard.
if
which,
injury or loss of life.
the indicated conditions
The following markings and caution and warning labels are used on
the instrument. Be sure to observe all cautions and warnings.
Instruction The instruction documentation symbol. The product
Manual
not correctly performed or adhered to, could result in
a
hazard. It calls attention to a procedure that, if
of
the instrument.
Do
is
marked with this symbol when it
user to refer to the instruction in the manual.
Do
not proceed beyond a caution sign
It
calls
attention to a procedure
not proceed beyond a warning note until
are
fully understood and met.
is
necessary for the
A
Warning
Warning
The CE93 mark shows compliance with European Community 1993
standards.
The CSA mark is the Canadian Standards Association safety mark.
a
The ISM1-A mark is
1,
Group
Hazardous voltage always present in
power cord connected to ac line.
Hazardous Voltage
Class A product.
symbol of an Industrial Scientific and Medical
this
area
with instrument
vi
Caution
General Safety
Considerations
Warning
Hazardous electrical shock. Heat sink is live. Disconnect power
supply before servicing.
No
operator serviceable parts inside. Refer servicing to qualified
To
personnel.
prevent electrical shock, do not remove covers.
Warning
Warning
Caution
If this instrument
Hewlett-Packard
may be impaired.
For continued protection against
only with same type and rating
other fuses or material
Always use the three-prong ac power cord supplied with this
instrument. Failure to ensure adequate earth grounding by not using
this cord may cause instrument damage.
is
used in a manner not specified by
Co.,
the protection provided by the instrument
fire
hazard replace line fuse
(3
A
250
V
type
F).
The use of
is
prohibited.
vii
How
Guide
to
Use
This
This guide
uses
the
following convention:
Documentation
Description
(FRONT-PANEL
Display
This guide contains the information required to operate, calibrate, and
repair the signal generator to the assembly level. Included are the
following:
a quick overview of the signal generator
examples of typical operation
rn
a reference section that describes
rn
explanations
installation instructions
rn
tables of specifications
theory of operation of the signal generator
rn
troubleshooting procedures to identify failed assemblies
KEY]
of
This represents a key physically located on
the instrument.
Text in this font represents FREQUENCY,
MODULATION, and AMPLITUDE displays.
all
operation features
error messages displayed on the signal generator
replaceable part numbers
adjustments required after repair or performance test failure
performance tests to test the instrument
to
specifications
viii
Contents
1
.
Operation
Quick Overview
1
. PowerKey
2
.
Display Contrast
3
.
Function and Data Keys
.
Increment Set Keys
4
5
.
Knobs
6
.
MEMORY
7
.
Modulation Source ................
la
.
Operation Examples
Getting Started
Operation Examples
Setting the RF Output Signal
Setting the Frequency
Setting the Amplitude
Turn on the RF Output
Setting the Modulation
Incrementing or Decrementing the RF Output Signal
Preliminary Steps
Using the Knob
Using the Increment keys
Using the Memory Registers
Saving Instrument Settings in Register Sequences
Selecting the Sequence
Saving Settings in Registers
Checking the Sequence
Checking a Different Sequence
Deleting a Register from the Sequence
Selecting the Sequence
Deleting a Register
Renumbering the Registers in a Sequence
Decreasing the Register Number ..........
Checking the Sequence
Inserting a Register in a Sequence
Saving a New Register
Offsetting the RF Output from a Reference
Setting the Reference Value
Offsetting the RF Output
Turning the Reference Mode
Setting a New Reference Value
Holding the Output Attenuator Range
Set the Amplitude Level
Holding the Attenuator
Adjusting the Amplitude
......................
...................
...................
.................
.............
...............
....................
....................
................
.............
...............
...............
...............
...............
..................
...................
..............
..............
..............
............
..............
..........
..............
................
..............
..........
..............
.............
..............
Off
or On
..........
.........
..............
...............
..............
.
.
...
........
......
.......
.......
1a-11
1a-11
1a-11
1a-13
1a-13
1a-14
1a-15
1a-16
1a-17
1a-17
1a-18
1a-18
1a-19
1a-20
1a-20
1a-20
1a-21
1-2
1-2
1-2
1-2
1-2
1-2
1-3
1-3
1a-1
1a-1
1a-2
1a-2
1a-2
1a-3
1a-3
1 a-4
1a-4
1a-4
1a-5
1a-6
1
a-7
1a-7
1a-7
1a-9
1a-9
Contents-1
Operation Reference
lb
.
Frequency and Amplitude
1
.
Knob
2
. Digit-Select Arrow Keys
3
.
REFSET
Units
4
.
REF ON/OFF
Function
1
.
FREQUENCY
2
.
AMPLITUDE
3
.
FMAM4M
INCREMENT SET
1
. INCRSET
Data
.........................
1
.
MHz/dBm
Units Conversion
2
.
Backspace
3
. emf
4.f
Instrument Preset
(POWER]
Cm-
HP-IB
1
.
ADRS
2
. LOCAL
MEMORY
1.SAV
2
.
REG
3
. Register Recall Arrows
4
. SEQ
5
. DEL
Renumbering the Registers
Modulation Source
1
. MODON/OFF
2
. INT
3
.
EXTACEXTDC
4
.
1
Setting the Modulation Level
5
.
MOD
RF OUTPUT
1
.
RFON/OFF
2
.
ATTNHOLD
Vernier Ranges
3
.
RFOUTPUT
Rear Panel
1
. 10 MHz REF INPUT and OUTPUT
2
. DISPLAY CONTRAST
3
. AUXILIARY INTERFACE
4
. Line Voltage Connector
5
.
HP-IB Connector .................
6 . TIMEBASEADJUSTandHelpSwitches
Remote Interface (Accessory)
1
.
MODON/OFF
2
.
RFON/OFF
3
.
Sequence Selection Arrows
......................
....................
.......................
.......................
...................
...................
....................
....................
....................
.......................
........................
@
....................
[DEL)
....................
........................
......................
.....................
......................
.......................
......................
.......................
......................
400
Hz INT 1 kHz
kHz + EXT
INPUT/OUTPUT
.....................
...................
...................
...................
......................
...................
...............
.............
...................
..................
..................
.................
..................
1b-10
1b-11
1b-12
..............
............
..................
..................
..............
.................
DC
................
...........
..............
..................
.........
...............
.............
.............
......
.............
..................
............
1b-12
1b-13
1b-14
1b-14
1b-15
1b-16
1b-16
1b-16
1b-17
1b-17
1b-17
1b-18
1b-18
1b-18
1b-18
1b-19
1b-20
1b-20
1b-20
1b-21
1b-2
1b-2
1b-2
1b-22
1b-22
1b-22
1b-23
1b-2
1b-2
1b-2
1b-3
1b-3
1b-3
1b-4
1b-4
1b-4
1b-4
1b-5
1b-5
1b-6
1b-6
1b-6
1b-6
1b-6
1b-6
1b-7
1b-7
1b-7
1b-9
1b-9
1b-9
1
1
1
Contents2
4 . Register Recall Arrows
Memory Interface (Accessory)
1
. POWER
2 . Copy Arrow Keys
Making a Copy
3.BUSY
IC
.
Operation Messages
Front Panel Operation Messages
HP-IB . Command Errors
AM Accuracy Performance Test
AM Distortion Performance Test
Phase Modulation Accuracy Performance Test
.
Phase Modulation Distortion Performance Test
.
Residual FM Performance Test
.
Harmonics Performance Test
Spurious Performance Test
.
DC
FM
.
RF Level Accuracy Performance Test
CW
Frequency Error Performance Test
Frequency Accuracy Performance Test (Option 1E5
Only)
......................
.................
...............
.............
..................
...............
...............
...........
...........
...........
...........
............
............
.............
.........
......
....
....
......
2-6
2-13
2-21
3-2
5a-3
6-2
8-19
8-20
8-21
8-22
8-23
8-25
8-26
8-27
8-28
8-29
8-32
8-33
8-34
8-39
Operation
1
“Operation” contains the following information:
Note
1.
Operation
la. Operation
Examples the instrument.
lb. Operation
Reference the instrument’s functions.
Operation
Messages
For information about service messages numbered
refer to Chapter
Provides a quick overview of the instrument’s
operation.
Provides examples to help you learn how
Provides quick access to information about each of
Provides information about both front-panel and
HP-IB
remote operation messages.
5c,
“Service Error Messages.”
500
and above,
to
operate
Operation
1.1
Quick
Overview
1.
Power
Key
1
234
Press
(m)
to the same state
the RF output will be turned
on.
6
to power-up the instrument. The instrument powers up
it
7
was in when power was turned off, except that
off
press the
fJ-1
key to turn it
2.
Display Contrast
3.
Function and Data
4.
Increment Set Keys
5.
Keys
Knobs
Display contrast
It
allows you to adjust contrast for the front-panel display. Turn
the adjustment to optimize the display for viewing it from above,
below, or straight on.
the display contrast adjustment before returning the instrument for
service.
The keys in the FUNCTION and DATA blocks allow you to enter
values for setting the frequency, amplitude, and modulation level of
the RF output signal.
When you press a FUNCTION key, that function becomes the active
function. Press
the active function. Press the or
active function setting by the increment value.
The knobs are always active when the instrument is in local (front
panel) control. Turn them
amplitude of the RF output. Press
adjust the knob’s resolution.
Press
(-SET),
reference value and turn
turn on and off the reference mode without changing the reference
value. When the reference mode is
the offset between the reference value and the RF output signal.
is
an adjustment that is located on the rear panel.
If
the display
[-SET)
next to each knob, to set the displayed value
to view or change the increment value for
to
increase or decrease the frequency or
on
the reference mode. Press
is
blank, first attempt to adjust
(TD
key at any time to change the
@
or
a,
next to each knob, to
CREF
on,
the displayed value indicates
as
the
ON/OFF)
0
1-2
Operation
7.
Modulation
6.
MEMORY
Source
Memory registers allow you to save instrument set-ups and recall
a
them whenever you wish. Press and enter
number to save the instrument's current settings.
settings, press and enter the register number. The arrow keys
allow you to recall registers in numerical sequence. You can arrange
your registers in up to ten different sequences.
The number of the currently selected sequence and the last register
selected are always displayed in the lower left corner of the display
to help you keep track of where you are in your testing process.
The memory register examples provided in Chapter la, "Operation
Examples," show you how to create a sequence and how to delete or
add registers in your sequence.
Press
[MOD
ON/OFF)
Lm]
for modulating the RF output signal. These tones are also available
as
an
selected. Press
audio source via the
or
output signal at the
to turn on or off the modulation source. Press
(-1
[m)
to select one of the internal source tones
MOD
INPUT/OUTPUT port when they are
or
[EXTI
MOD
INPUT/OUTPUT port.
to
ac- or dc-couple
two-digit register
To
recall the
an
external
(ikk + EXT
Press
the internal
(Additional internal plus external modulation capabilities are available
for HP-IB operation.)
DC)
to frequency modulate the RF signal with
1
kHz tone and an external source
at
the same time.
Operation
1-3
la
Operation
metting
G
Started
Examples
Operation Examples
This section contains operating examples to help you learn how to
operate the signal generator. These examples can be performed
without any additional equipment.
If
this is the first time you have operated this instrument, perform
each of the following examples for a quick introduction to general
operation. After you have completed the examples, try operating the
own.
If
instrument’s remaining functions on your
or want additional information on a function, refer to Chapter
“Operation Reference.”
understand, refer to Chapter
1.
Setting the RF Output Signal
2.
Incrementing or Decrementing the RF Output Signal
3.
Using the Memory Registers
4.
Offsetting the RF Output from a Reference
If
a message
IC,
is
displayed that
“Operation Messages.”
you have trouble
lb,
you
do not
5.
Holding the Output Attenuator Range
1
4
2
3
5
Operation Examples
la-1
Setting the
Output
RF
Signal
Setting the Frequency
Setting the Amplitude
In this example, you
level of the
1.
Set the frequency to
RF
will
set the frequency, amplitude, and modulation
output signal.
100
MHz
using the keys shown below the
instrument diagram.
If
you make a mistake while entering a value, press
it.
2.
Set the amplitude to
-100
dBm.
to correct
functl
.drw
la-2
Operation
Examples
funct2.dnv
Turn
on
the
RF
Output
3.
Press
@KjiEF]
RF
OFF
is displayed below the amplitude setting when the
output is turned
to turn on the RF output.
RF
off.
Setting the
Modulation
MODULATION
100.00000
4.
Set the
The modulation rate is displayed below the deviation setting.
Use the MODULATION SOURCE keys when you
modulation source and turn modulation
FM
deviation to
MHz
3
kHz.
FM
-
3.00
on
kHz
or
wish
off.
AMPUTUDE
to select a
rlJnd3.dlw
Operation Examples 1 a-3
Incrementing or
Decrementing the
RF
Output Signal
Preliminary Steps
In this example, you will increment the amplitude and frequency
the RF output signal.
1.
If
they are not already set, set the frequency to
-100
amplitude to
dBm.
100
MHz,
and the
of
Using
the
Knob
FREQUENCY
2.
Increment the amplitude using
Press or when you wish to adjust the increment resolution.
100.00000
-i
MHz
MODULATION
the
knob.
-
-101.0
AMPUT
Incrl.drw
dBm
la-4 Operation Examples
Using
the
Increment
keys
3.
Enter a frequency increment of
The $ symbol is displayed when you press
that the displayed value is the increment set value.
4.
Increment the RF output frequency in
25
kHz.
25
(-SET_)
kHz
to indicate
steps.
i
m
The increment keys affect the
(FREQUENCY, AMPLITUDE,
FREOUENCY
100.02500
-
MHz
last
FUNCTION selected
FM,
AM
or
9M).
MODULATION
-
AMPLITUDE
-101.0
.
dBm
J
incr4.d~
Operation
Examples
la-5
Using
Registers
the
Memory
The memory register examples show you how to create a sequence
registers, delete a register from that sequence, renumber the registers
in the sequence, and insert a new register in the sequence.
of
Up to
can contain up
300
in the sequences in any combination (such
registers each, or 3 sequences of
total does not exceed
sequences each contain
10
register sequences can be-defined
to
100 registers
registers available in the instrument. The registers can be used
300 registers.
100
(00
through
100
registers
It
(0
through 9). A sequence
99).
There are a total of
as
10
sequences of
registers each)
is not possible to have all
as
that would be
as
long
1000
8,
30
as
the
10
registers.
tl
REG 99
-
300REG
J
1
a-6 Operation Examples
Saving
Settings
Instrument
in Register
Sequences
In this ten step example, you will use the memory keys to create
a sequence containing three registers. Each register will contain
different frequency setting.
Selecting the Sequence
1.
Select sequence
If
there are registers saved in sequence 0, the message shown
in the display below
example
sequence
will
0
0.
will
not appear. Note that the steps in this
cause the settings in registers
to be changed.
00,
01,
and
02
of
regseql
a
.dm
(,,,I.]
Saving Settings
2.
Set the frequency to
3.
Save the instrument settings in register
in
Registers
10.00000
SEQ
0
REG
10
MHz
00
MHz.
00.
4.
Set the frequency setting to
11
MHz.
Operation
Examples
la-7
5.
Save the instrument settings in register
6.
Set the frequency to
12
MHz.
regseq4.d~
01.
regseq5.d~
1
a4
Operation Examples
7.
Save the instrument settings in register
02.
p-
Checking the Sequence
8.
Recall the registers in sequence
The
a
which key
12.00000
SEQ
and
@J
was
10.00000
FREQUENCY
0
pressed
'-,
MHz
REG
02
keys recall registers or sequences depending
MHz
last
MODULATION
(m
0.
or
ISEQ_)).
-
AMPLITUDE-
on
regseq8.d~
Checking a Different Sequence
9. Select sequence
1.
Operation Examples 1 a-9
Note
10.
Step through the registers in sequence
1
if
there
are
registers
saved in it.
1
Sequence
does not contain the settings you saved in sequence
0. The instrument enables you to save different settings in each
sequence to create up to ten different sequences for your testing.
Remember when you save or recall
a
register, be sure that the correct
sequence is also selected.
SEQ
1
REG
00
req0.dnv
la-1
0
Operation
Examples
Deleting a Register
from
the
Sequence
In this example,
created in the preceding example.
Selecting the Sequence
1.
Select sequence
you
0.
will
delete a register
from
the sequence
you
Note
\f
L
Deleting a Register
2.
Delete register
The contents of the register are recalled when
allows
you
to resave the contents if
FREQUENCY
SEQ
01
FREQUENCY
0
from
'-
sequence
-
MODULAllON
0.
you
need to.
MODULATION
-
-
AMPLITUDE
it
is
deleted. This
AMP
1
d%lregO.drw
Operation
Examples
delregl
.drw
la-1
1
3.
Step through the remaining registers in sequence 0.
The deleted register number has been removed from the sequence.
Note that the instrument does not renumber the registers when
one is deleted.
delreg2.d~
1
a.12
Operation
Examples
Renumbering the
Registers in
Sequence
In this example, you
02
a
in sequence 0 caused when
will
eliminate the skip from register
Decreasing the Register Number
1.
Delete register
02.
you
deleted register
00
to register
01
in the previous
The settings saved in register
2.
Save the settings from register
02
are recalled when it
02
into register
01.
is
deleted.
numseql
.drw
Operation Examples la-13
Checking
3.
Step through the register sequence.
the
Sequence
Note
12.00000
In this example, you renumbered one register. When you need to
renumber two or more registers, use instead
each register until you get to the last register in the sequence, then
use
(DELI.
MHz
10.00000
SEO 0 REG
MHz
00
of
a
to recall
la-14 Operation Examples
Inserting a Register
a
Sequence
In this example, you
in
will
insert a register into the sequence you
created in the previous example. The process involves incrementing
each register number that comes after the point in the sequence
where you wish to insert
1.
Recall the
last
register in sequence
a
register.
0.
12.00000
SEQ 0 REG
2.
Save the recalled settings into register
3.
Recall register
Register
register
01
can now be used to save the settings that are saved in
00.
MHz
01
00.
02.
J
imeql
.dm
insseu2.d~
10.00000
SEQ 0 REG
MHz
00
Operation
Examples
la-15
4.
Save the recalled settings into register
01.
Register
00
can now be used to save the new settings.
Saving a New Register
5.
Set the frequency to
8
insseq4.d~
MHz.
6.
Save the settings
Press
a
to check the new sequence.
in
8.00000
SEQ
0
REG
register
MHz
00
00.
la-16
Operation Examples
Offsetting the
Output from
RF
a
Reference
Setting the Reference
Value
I1
In this example,
reference value,
below the reference value.
1.
Set the frequency
you
will enter
and
then offset the RF output frequency
to
500
an
RF output frequency, set it
MHz.
10
as
MHz
the
q@
0
0
0000
/
u-
2.
Set
500
The
mode
500.00000
MHz
1
ref1
MHz
as the reference frequency.
A
symbol appears in the display to indicate that the reference
is
selected. The output frequency is
still
500
MHz.
.dnv
Operation
Examples
la-17
Offsetting the
output
RF
3.
Offset the output frequency
frequency.
You can enter in the offset value directly, or use the knob or
and
a
keys.
10
MHz
below the reference
Attention!
In the reference mode, the output frequency equals the reference
k
frequency
Turning
4.
Turn-off the reference mode to display the actual output
frequency.
5.
Turn-on the reference mode without changing the reference
frequency.
the displayed offset frequency.
the
Reference
490.00000
Mode
MHz
Off
or
On
la-1
8
Operation
Examples
FREQUENCY
-
1O.OOOOOnMHz
1-
MODULATION
-
AMPLITUDE
6.
Change the displayed units to
kHz.
Note that for amplitude, reference settings are displayed in dB
units only.
Setting a New Reference
7.
Set the current output frequency as the new reference frequency
at
any
time.
Value
ref7.d~
Operation Examples
la-19
Holding
the Output
Attenuator
Set the Amplitude
Holding the
Attenuator
Range
Level
In this example, you will hold the output attenuator
change ranges when you change the amplitude setting. This
prevent attenuator range changes
1.
Set the amplitude level
to
-82
from
affecting the output signal.
dBm.
I
2.
Hold the attenuator at this setting.
so
-82.0
it does not
dBm
will
am1
drw
\f
FREOUENCY
\
-
MODULATION
-
-82.0
AMPLITUDE
dBm
HOLD
J
la-20
Operation
Examples
Adjusting the
Amplitude
3.
Adjust the amplitude setting.
Now
amplitude changes do not cause the attenuator to change its
range setting. Consequently, amplitude changes are limited to the
range provided by the instrument's vernier. For information about
the instrument's vernier ranges, refer to Chapter lb, "Operation
Reference.
'
Operation Examples la-21
Ib
Operation
Reference
This chapter describes each of the instrument’s functions including all
of the front panel keys, the rear panel connectors, and the optional
remote interface and memory interface. This information is presented
in the same functional groups
groupings.
as
the front panel key functional
Operation Reference
1
b-1
Frequency/Amplitude
Frequency and
Amplitude
1
2
3
4
ireq
keys.dm
2.
Digit-Select
1.
Knob
Arrow
Note
Keys
The knob and reference set keys work similarly for both frequency
and amplitude.
Turn the knobs to increment or decrement the frequency and
amplitude settings. The knobs are always active when the instrument
is in local operation.
Press these digit-select arrow keys
changed with the knob.
The knobs increment the selected digit only. For information about
an
incrementing by
“Increment Set” in this chapter.
arbitrary value using the increment set keys, see
(@
a)
to select the digit to be
lb-2
Operation
Reference
3.
REF SET
Frequency/Amplitude
Press
[REF)
RF
output setting
is stored in non-volatile memory until you replace it by pressing
(REFSET)
to turn on the reference mode and to set the current
as
the reference value. The reference value
again.
4.
REF ON/OFF
Output
Trouble?
Power
When you press
value and the units. When
the offset between the reference value and the
The
RF
output signal is not changed when you press this key.
(-SET),
the A symbol is displayed between the
A
appears, the displayed value indicates
RF
output signal.
Units
When you press
or
kHz.
For
units provided, but they are displayed in dB only.
Press
[REF
on the reference mode without changing the reference value.
When you turn on the reference mode, the displayed value indicates
the offset between the reference value and the current
setting.
The
RF
output signal is not changed when you press this key.
If
the
RF
output power seems too low, look for A in the display
between the power level value and the dB indicator. The
that reference mode is turned on. The displayed value is
output power level;
the output power.
can then reset the output power to the desired level.
(REF]
amplitude, values can be entered in any
ON/OFF] to turn off the reference mode
To
for frequency, values can be entered in
it
is the offset between the reference value and
exit
the reference mode, press
of
the amplitude
if
it is on,
RF
CREF
MHz
or
to
turn
output
A
tells you
not
the
ON/OFF~.
You
Operation
Reference
1
b-3
Function
Function
1
1.
FREQUENCY
2.
AMPLITUDE
3.
FM
AM
4M
The RF output frequency range is
making frequency changes, the instrument does not turn
output.
Frequency switching typically takes less than
conditions occur for changes which cross the instrument’s two
frequency band edges
The RF output amplitude range is -136 dBm to
over-range to
instrument does not turn
provides rapid amplitude changes. The period of any over- or
under-ranging that may occur during level transitions is typically less
than 30 ms.
IFM_)
Press
use the data entry keys to enter the desired value of deviation. The
values allowed depend on the RF frequency selected. See Chapter
“Specifications” for peak deviation specifications.
IAM)
Press
entry keys to set the desired value of range. Values from
100% are allowed.
Press
@KJ
the data entry keys to enter the desired value of deviation. The
values allowed depend on the RF frequency selected. See Chapter
“Specifications” for peak deviation specifications.
+
13 dBm. When making amplitude changes, the
to set the peak deviation for frequency modulation. Then
to set the amplitude modulation range. Then use the data
to set the peak deviation for phase modulation. Then use
(249
off
MHz and
250
kHz to 1000 MHz. When
off
the RF
120
ms. Worst case
501
MHz).
+
10 dBm with
the RF output. The electronic attenuator
4,
0
through
4,
lb.4
Operation Reference
Increment Set
INCREMENT
1.
INCR
Note
SET
SET
incrkays.dw
Press
(INCR-J
currently active function (the active function is the
you press;
press
@FETSET),
indicates that the displayed value is the increment set value.
An increment value cannot be set for the knobs or the memory recall
arrow keys.
to view or change the increment set value for the
last
I-],
fJ
[-I,
is displayed between the value and the units. The
m,
m),
or
m).
function key
When
you
$
Note
Function
Frequency
Amplitude
FM Deviation
AM
Depth
4M
Deviation
It
is possible to set an increment value of greater resolution than can
be displayed or than the hardware can respond to. However, the
instrument records each arrow key press and
appropriate number
of
presses.
1
Hz
to
999.75
>
0.0 to 149.0 dB
>
0.0 to 100
>
0.0
to
100%
>O.O
to
10.0
Range
MHz
kHz
Radians
will
respond after the
Operation Reference
lb-5
Data
Data
1
2
4
1.
MHz/dJ3m
Note
2.
Backspace
3.
emf
Press a units key after you enter a value. This terminates the entry.
Note that the units keys in the left column are each labeled with an
amplitude unit on the bottom and a frequency or modulation unit on
the top. The instrument applies the appropriate unit for the function
value you are entering. The bottom key in the row for instance,
q5M
terminates a
Memory register selections, sequence selections, and HP-IB address
entries do not require a units key to terminate the entry. These
entries are automatically terminated after the last digit is entered.
entry in radians or an amplitude entry in dBpV.
~~ ~~ ~
Units Conversion
You
can change the units of the displayed frequency or amplitude
value by selecting the FUNCTION (frequency or amplitude) and then
pressing a units key. The instrument will convert the displayed value
to the equivalent value for the units key you pressed.
Press
[--1
when entering a numeric value to backspace and remove
the last digit entered.
Press these keys to display the amplitude value indicated on the key
label in electromotive force units. Emf is the RF output voltage with
no load.
It
is twice the output voltage with a
50
ohm load.
1
b-6
Operation
Reference
4.
Press this key at any time while you are entering an amplitude or
reference offset value to change the sign of the value.
Instrument Preset
Instrument Preset
(E)
(m)
Note
(DEL)
Turn the instrument on while pressing the backspace key
an
perform
factory-defined settings-shown in the following table. Save &d recall
registers are not affected by this operation.
Turn the instrument on while pressing the memory
perform a clear memory. This function erases
sets the
where the instrument powers up to factory-defined settings shown in
the following table.
This
will
627
Battery
instrument preset. The instrument
HP-IB
cause
RAM
address to
an
error message to appear on the display:
failure: memory lost.
19,
and performs an instrument preset
will
power up to
(DEL)
all
savehecall registers,
This is normal.
(@)
key to
to
Operation Reference
1
b-7
Instrument Preset
Instrument Preset Settings
4M
I
Reference
Increment
Input
Frequency
coupling
I
0.0
MHz
0.1%
Internal
I
1
b.8
Operation Reference
Attenuator
Deviation
Increment
coupling
1.0
0.1
radians
radians
Off
1.
ADRS
i=
1
2
Press
(ADRS]
second line of the FREQUENCY display.
To
change the address, press
example, enter
to view the instrument's HP-IB address setting in the
(ADRS)
01
to set the address to
hplbkeya.dm
and a two-digit number. For
1.
2.
LOCAL
Acceptable HP-IB addresses are
Press
(J5'CT)
has been set for remote (HP-IB) operation. The
will replace the HP-IB status indications in the second line of the
FREQUENCY display when the instrument is returned to local
operation.
to return to front-panel operation when the instrument
00
through
30.
SEQ
and
REG
fields
Operation
Reference
lb-9
Memory
MEMORY
The memory keys allow you to save instrument settings into memory
registers and recall the registers in a numeric sequence.
10
Up to
can contain up to
300
in the sequences in any combination (such
registers each, or 3 sequences of
total does not exceed
sequences each contain
register sequences
100
registers available in the instrument. The registers can be used
300
goo
can
be defined
registers (00 through 99). There are a total of
100
registers.
100
registers
It
(0
through 9). A sequence
as
10
sequences
registers each)
is
not possible to have all
as
that would be
as
long as the
1000
of
30
10
registers.
n
SEQ
\I
9
MEMORY
last
digit. Register key entries
digits. Sequence key entries
REG
-
key entries are automatically terminated after you enter the
99
(
@,
(m)
300
REG
(DEL),
and
m),
require one digit.
require two
1
b.10
Operation Reference
Memory
1.
Note
SAV
2
Press
(SAVI
operating settings in
except the knob digit positions and the HP-IB address will be saved in
the register.
When you press the
total number of registers still available.
When you save a register,
sequence. (The number of the selected sequence appears in the
second line of the FREQUENCY display.) You can only recall a register
when the sequence
(Refer to
The instrument does not have a copy function for saving registers
from one sequence to another.
3
and a register number
a
memory register.
(SAVI
key, a message is displayed to tell you the
it
it
is assigned to is selected.
“4.
SEQ” for further information about register sequences.)
(00
through 99) to save the current
All
front-panel settings
is assigned to the currently selected
Operation
Reference
lb-11
Memory
2.
REG
Press
CREGJ
and a register number
operating settings saved in that register.
(00
through 99) to recall the
3.
Register Recall
Arrows
The number of the
with the number of the currently selected sequence.
You can only recall registers from the currently selected sequence.
To
recall a register from another sequence you must first select the
sequence using the key.
The recall
registers. The last key pressed
affected by the arrow keys.
(Refer to
f&)
“4.
last
register recalled appears in the display along
and
SEQ”
keys can be used to select sequences or recall
(SEQ
or REG) determines which field is
for further information about register sequences.)
lb-12
Operation
Reference
4.
Note
SEQ
Memory
memkeyl
.drw
4
Press
(SE91
and a sequence number
sequence. When you select a sequence, the number of the sequence
appears in the display along with the number
saved in the sequence. The instrument is set to the operating settings
saved in the first register.
If
no registers have been saved in the
sequence, a message is displayed to let you know.
~ ~
Selecting the sequence you are currently in is a quick way to return
to the beginning of the sequence.
(0
through
9)
to select a register
of
the first register
A
sequence can include up to
300
are a total of
registers available in the instrument.) Registers are
100
registers
(00
through
99).
(There
automatically assigned to the currently selected sequence when they
are saved.
The registers saved in any given sequence are independent from the
registers in any other sequence. This allows you
different register sequences. Consequently, it
is
possible to have up
to ten registers with the same number (for example,
create
REG
up
01)
to
10
each
to
assigned to a different sequence and each with different operating
settings saved in it.
Operation Reference
lb-13
Memory
5.
DEL
Press
(DEL)
and a register number
register. The specified register is deleted from the currently selected
sequence only; registers in other sequences you have set up are not
affected. After you have deleted a register, you
recall that register number until you have saved operating settings in
it again.
(00
through
99)
to delete that
will
not be able to
Note
The register number is immediately deleted from the sequence when
the delete entry is completed. However, the settings contained in the
register are recalled when you delete the register
the settings
if
you need to.
so
you can re-save
Renumbering the Registers
If
you use the arrow keys to recall the registers in sequence, the
If
deleted register number will be skipped.
so
skip, you can do
register back one register number. To delete
delete each register in the sequence.
by moving each register following the deleted
you wish to eliminate the
an
entire sequence,
lb-14
Operation Reference
Modulation Source
Modulation
Source
Modulation Source Paths (the
1
kHz
path is highlighted)
blkdag.drw
Operation Reference
lb-15
Modulation Source
modskeys.dm
\
b-
MODULATION \ SOURCE
1. MOD
2.
INT400Hz
INTlkHZ
3.
ON/OFF
EXTAC
EXT DC
4'
Press (MOD
mode (AM, FM, or $M).
MODULATION display when modulation is turned
This key also turns on or
INPUT/OUTPUT connector when an internal source
is selected. The operation of
key on the HP 83300A Remote Interface.
Press one of these keys to select an internal source for modulating the
carrier. The selected source is also output at the
as
port
Press one of these keys to configure the
an ac- or dc-coupled input for modulating the carrier.
Calibrated modulation requires
For audio source frequencies of less than
will appear in the second line
level of the source is not within approximately
a 1 Vpk signal into
Acceptable Frequency Ranges for
2
ONIOFF)
3
to turn on or
OFF
appears in the second line
off
the audio output at the
this
60061.
an
of
Source
5
off
the currently-selected modulation
of
the
off.
MOD
(400
Hz
or 1 kHz)
key is the same
MOD
audio source
10
the MODULATION display when the
as
the
[MOD
ON/OFF)
MOD
INPUT/OUTPUT
INPUT/OUTPUT port as
of
1
Vpk into
kHz, a
an
HI
or
&5%
of
External Audio
1
Vpk.
LO
600hl.
indicator
1
b.16
Operation Reference
Modulation
4M
FM,
AM
Coupling Range
20
DC
20
Hz
to
Hz to
EXT
EXT
EXT
1
EXT
AC
DC
AC
DC
to
75
75
kHz
25
kHz
kHz
i
4.
1
kHz
+
EXT
DC
Modulation
Press
[I
kHz
+
EXT
DC)
to configure the
DC
coupled input for modulating the carrier along with the internal
MOD
INPUT/OUTPUT port
kHz source.
Source
as
a
1
Note
(Refer also to
“3.
EXT
AC
EXT
DC”
for further information about
operation and acceptable ranges.)
1
kHz + EXT
AC,
400
Hz + EXT
DC,
and
400
Hz + EXT
AC
are
available only via HP-IB.
Setting
the
Modulation
Level
When modulating with both an internal and external source, the
of
level
the external source should not exceed 0.5 V peak or
This level will provide one half of the displayed modulation.
0.5
To
Vdc.
set
modulation to the level you desire, set the displayed modulation to
set
to
0.5
0.5
V
V
two-thirds of the desired setting. The external source,
peak or
setting (one-half
For example, to set up the modulation for
the instrument for
peak,
If
0.5
Vdc,
will
provide the additional one-third of the desired
of
the instrument’s setting).
2
kHz of
will
provide another 1 kHz of deviation.
FM.
The external source, set to
the external source is set to less than
3
kHz
of
FM deviation, set
0.5
V
peak, the modulation
level provided by the source will be less than one-half
of
the
displayed resolution. The following equation may be helpful for
determining the appropriate modulation level setting for the
instrument when the level of the external source is less than
0.5
V.
Where:
A
=
E
=
D
=
For example, to set up for
source set to
would be:
5.
MOD
IN~UT/OU~~
This port outputs a 1 Vpk (into
modulation source is selected
coupling is selected
the input for a
preceding table for acceptable audio ranges.)
-=
AD
l+E
Actual modulation level
External source level
Displayed modulation level
3
kHz of FM deviation with an external
0.3
V
peak, the instrument’s displayed modulation level
3kHz = 2.3kHz
1
+
0.3V
6000)
(400
(c-1,
1
Vpk (into
[ETET]
600Q)
audio tone when an internal
Hz or 1 kHz). When external
or
[I
kHz
+
EXT
DC)), it provides
audio source. (Refer to the
Operation
Reference
lb-17
RJ?
Output
RF
OUTPUT
1.
2.
RF
ON/OFF
ATTN
HOLD
2’
Press
I-)
appears in the second line of the AMPLITUDE display when the
output signal is
The instrument turns
maximum output attenuation
its lowest setting. This results in approximately
isolation.
Press
(-1
setting.
when the attenuator hold function
When the attenuator hold function is on, amplitude adjustments are
limited to the range
0.1 dB per step adjustment resolution across its specified
Vernier
The following table
upper and lower limits of each vernier range. The instrument’s
amplitude setting when you press the
which vernier range is used.
HOLD
Ranges
to
turn the RF output signal on or
off.
off
to
hold the electronic step attenuator at its current
appears in the second line
of
the instrument’s vernier. The vernier provides
(10
3’
off.
RF
OFF
the output signal by switching in the
(130
dB) and setting the vernier to
170
dB of carrier
of
the AMPLITUDE display
is
on.
10
dB range.
dB Specified Vernier Ranges) provides the
c-)
key determines
1
b.18
Operation
Reference
is
The vernier
limits shown in the table when
amplitude settings that exceed the limits may not provide output
levels that are within the accuracy specifications
allowed
to
over-range and under-range beyond the
(ATTN]
is selected. However,
of
the instrument.
10
Range
dB
Specified Vernier Ranges
Upper
and
Lower Limits
+
1
2
3
4
5
6
7
8
9
10
11
12
13
14
10.0 dBm
-6.0 dBm
-16.0 dBm
-26.0
-36.0
-46.0
-56.0 dBm
-66.0 dBm
-76.0 dBm
-86.0 dBm
-96.0
-106.0
-116.0
-
126.0
dBm
dBm
dBm
dBm
dBm
dBm
dBm
to
to
to
to
to
-5.9 dBm
to
-15.9 dBm
to
-25.9 dBm
to
-35.9 dBm
to
-45.9 dBm
to
-55.9 dBm
to
-65.9 dBm
to
-75.9 dBm
to
-85.9 dBm
to
-95.9 dBm
-105.9
-115.9
-125.9
-
136.0
dBm
dBm
dBm
dBm
RF
output
3.
RF
OUTPUT
Caution
The RF output port is reverse-power protected to
500.
When the instrument senses a reverse-power signal, it turns the
off,
RF output
vernier to its lowest setting.
the step-attenuator to maximum attenuation, and the
A
message appears in the second line of
50
W
or
25
Vdc into
the display when the reverse-power protection has been activated.
After
you
have removed the reverse-power signal from the RF output,
press the
Applying a signal source exceeding
1-j
key to turn the output signal on again.
50
W
or
25
Vdc into
509
to the RF
output port or maintaining a signal source at the RF output for an
extended period
of
time may damage the instrument.
Operation
Reference
lb-19
Rear
Panel
Operation
Rear
1.
10
Panel
MEtz
and
REF
OUTPUT
I'
INPUT
23
These connectors provide the input and output ports for the
instrument's timebase reference. The instrument will lock to
5
MHz,
or 10
MHz
that is within
output connector provides a
4
external reference source connected to the input
f5
ppm. When the internal timebase is being used, the
10
5
MHz,
6
1
Vrms level signal.
a
2
MHz,
2.
DISPLAY
CONTRAST
This knob controls the front-panel display contrast. Display contrast
can be optimized for viewing the display from above, below, or
directly in front
of it.
lb-20
Operation
Aeference
Rear
Panel
Operation
5.
3.
AUXILIARY
INTERFACE
4.
Line Voltage
Connector
HP-IB
Connector
Connect the HP 83300A Remote Interface or the HP 83301A Memory
Interface to this connector for operation with the instrument. Refer
to “Remote Interface” and “Memory Interface” in this section for
information about operating these devices.
TX
Data (output)
+5
Volts
Ground
CTS
(input)
For information about the line voltage connector or fuse replacement,
refer to Chapter
This
is
an IEEE 488.1-1987 connector for controlling the instrument
via
an
external controller. For information about HP-IB operation of
the instrument, refer to Chapter 2, “HP-IB Programming.
3,
“Installation.”
\
RX
Data (input)
RTS
(output)
’
6.
TIMEBASE
ADJUST
and
Help
&,itches
Position one of this switch (labeled “TIMEBASE
the instrument in the timebase adjustment mode. For the timebase
adjustment procedure, refer to Chapter 7, “Adjustments.
Position two of this switch (labeled “NOT
off
allows you to turn
001
002
004
005
006
007
008
010
011
012
013
014
For more information about these messages, refer to Chapter IC,
“Operation Messages.
No external dc coupling
Modulation exceeds deviation range
Invalidunits selection
Increment value entry out of range
End of increment range
Entered value out
Amplitude exceeds specifiedrange
End of knob range
Amplitude exceeds
No external dc coupling
AM
unspecified above 4 dBm
AM
unspecified
the following error messages:
for
PM
of
range
ATTNHOLDlimits
for
AM
at
or
below
”
1.5
ADJUST”)
USED”)
MHz
places
’
is the switch which
Operation Reference
lb.21
Remote
Interface
Remote Interface
(Accessory)
1
AUXILIARY
INTERFACE
2
3
1.
MOD
2.
RF ON/OFF
ON/OFF
4
Press
[MOD
ON/OFF)
external)
LED above the key is
instrument’s MODULATION display.
This key also turns on or
INPUT/OUTPUT port when an internal source
selected.
Press (-) to turn the RF output signal on or
output signal is turned
appears in the second line
There is approximately
Off.
to
the RF carrier. When modulation is turned
to turn on or
off
and
OFF
off
the audio output at the
off,
the
LED
of
the instrument’s AMPLITUDE display.
170
dB
of
off
all modulation (internal and
appears in the second line
(400
above the key is
carrier isolation when the output is
off,
MOD
Hz
or INT
off.
When the RF
off
and
the
of
RF
the
1
kHz)
is
OFF
lb-22
Operation Reference
3.
Sequence Selection
Arrows
4.
Register Recall
Arrows
Remote Interface
Press
a
or
a
to select the next or previous sequence of registers.
of
The sequences are selected in numeric order. The number
selected sequence appears in the second line of the FREQUENCY
display. When a sequence is selected, the first register in the sequence
is recalled. When a sequence is selected that has no registers saved in
(-
-)
will
it, two dashes
a
to recall the operating settings saved in the registers
Press
in the currently selected sequence. The number of the last register
accessed appears in the REG field.
If
two dashes
registers saved in it
After the last register in the sequence has been recalled, the register
count will begin again at the first register saved in the sequence.
(Refer
register sequences.)
or
(-
-)
to
"MEMORY" in this section for further information about
appear in the REG field.
appear in the REG field, a sequence that has no
has
been selected.
the
Operation Reference
1
b.23
Memory Interface
Memory Interface
(Accessory)
AUXIURY
INTERFACE
1.
POWER
This light indicates that power
It should light when the cable
is
being supplied to the
is
connected to the AUXILLARY
HP
83301A.
INTERFACE connector on the rear panel of the instrument. If it does
to
not light, refer
Chapter 5b, “Troubleshooting Information.
”
lb.24
Operation
Reference
Memory Interface
2.
Copy
Arrow
Note
3.
Keys
BUSY
Press these keys
the instrument and the HP 83301A. After the instrument has
successfully completed the copy, it will display a message to let you
know.
Making
When the HP 83301A is connected to the instrument, press the
copy all of the memory registers saved in the instrument into the
HP 83301A's memory. After you have pressed
also press the
copy process. Press the
HP 83301A into the instrument's memory.
Copying memory into the instrument
existing memory registers in the receiving device to be erased. It does
not effect the memory in the sending device, however.
This light is turned on while memory registers are being copied from
one device
memory interface while this light is on may cause the memory data to
be corrupted. The light will turn
If
the Busy light flashes for a few seconds and then turns off, the
instrument did not find valid memory register data in the memory
interface. If the Busy light continues to
at all after an arrow key and the
Chapter 5b, "Troubleshooting Information.
a
to
initiate a copy
of
the memory registers between
Copy
an
arrow key, you must
(SAV)
key
on
the instrument's front panel to begin the
to
copy the memory registers stored in the
or
the HP 83301A causes any
to
another. Attempting to operate the instrument or
off
when the copy is complete.
flash,
or
if
it does not turn on
ISAV)
key have been pressed, refer to
@)
to
Operation
Reference
lb-25
IC
Operation
Front Panel
Operation
Messages
Messages
This chapter provides descriptions for both front panel and HP-IB
operation messages. (For information about service messages,
numbered
Messages.
500
and above, refer to Chapter
SEQ
X
SAVE
- -
XXX
registers available
This message is displayed when the
inform you of how many registers are still available.
a register is available, enter the two-digit number of the
register you wish to save.
SEq
XREG--XXhas not beensaved
This message is displayed when an attempt is made to recall
a register that has not been saved in the sequence. Check to
be sure that the appropriate sequence is selected and that
you have entered the correct register number.
SEQ
XDEL--Enternumberto delete
5c,
"Service Error
key is pressed to
If
001
This message is displayed when the
Enter the number of the memory register you wish to
delete. When a register is deleted, the settings saved in it
are erased and the register number is removed from the
sequence.
SEQXhasnoregisters savedinit
This message is displayed when a sequence is selected that
has no registers saved in it.
the sequence, set-up the instrument, press the
enter a two-digit register number.
No
externaldc coupling
This message is displayed when PM
(EXTDC)
of an external source is not possible for PM.
(1
kHz
Or, select
external modulation capabilities (such
are available through HP-IB control
to Chapter
+
or
(1
kHz
+
EXT
EXT
DC]
you
will
[EXT]
2,
coupling for PM. Additional internal plus
"HP-IB Programming.
If
for
DC)
is also selected.
actually get 1 kHz and external
(DEL)
key is pressed.
you wish to save registers in
ISAV)
key, and
PM
is
selected and
DC
coupling
If
you press
ac.
as
[I
kHz
+
EXT
AC))
of
the instrument; refer
Operation Messages
1c.l
002
Modulation exceeds deviationrange
This message is displayed when modulation is set to a level
of
that exceeds the operating range
the instrument. This
condition occurs when a modulation level is entered that is
or
out-of-range for the current RF frequency setting,
when
the RF frequency setting is changed and the modulation
setting is out-of-range for the new setting.
003
004
005
006
There areno registers available
This message is displayed when an attempt
is
made to save
a memory register and all of the instrument’s memory
registers have already been used. Delete
any
unneeded
registers in order to save new ones. Deleting registers from
any sequence
will
make them available for saving new
settings in the sequence you are using.
Invalid units selection
This message is displayed when a units key is pressed that is
not valid for the active function. Check that the units key
you select is labeled with the appropriate units for the value
you are entering.
Increment value entry out of range
This message is displayed when the
LSET)
key is pressed
and a value is entered that is not within the increment
value range for the active function. Refer to “Increment
Set” in Chapter lb, “Operation Reference,” for a listing
of
the increment value ranges.
End of increment range
or
@)
This message is displayed when the
increment
arrow key is pressed and the increment value does not set
the instrument to a setting that
allowable range. To view
press the
Chapter
(-SET_)
lb,
“Operation Reference, ” for a listing of the
or
key. Refer to “Increment Set’’ in
is
within the instrument’s
change the increment value,
increment value ranges.
lc.2
Operation Messages
007
008
010
Enteredvalueoutof range
This message is displayed when a value is entered that
does not set the RF output signal within the instrument’s
allowable range. Refer to “Function” in Chapter
lb,
“Operation Reference, ” for information on the instrument’s
allowable ranges.
Amplitude exceeds specified range
This message is displayed when the instrument’s amplitude
+
is set to a level that exceeds
End
of
knob range
10 dBm.
This message is displayed when the knob is turned but
changing the selected digit would set the instrument to a
value that is not within its allowable range.
01
1
Amplitudeexceeds
ATTNHOLDlimits
012
013
014
This message is displayed when
to
amplitude is set
limits by greater than
a level that exceeds the vernier range
5
dBm. Exceeding the 10 dB vernier
[-HOLD)
is on and the
range of an attenuator hold setting causes the output level
accuracy to degrade. For information about the vernier
ranges and limits, refer to “Atten Hold” in Chapter
“Operation Reference.
No
externaldc coupling for
This message is dimlaved when
~EXTDC)
or-ci
kHz
of an external source is not possible for
kHz
+
EXT
DC)
Or, select
CEXT)
external modulation capabilities (such
are available through HP-IB control
2,
to Chapter
AMunspecifiedabove4dBm
“HP-IB Programming.”
This message is displayed when
”
AM
AM
is selected and
+*EX+
YOU
DC)
is
also
selected.
AM.
DC
If
will actually get 1 kHz and external
coupling for
AM.
Additional internal plus
as
1
kHz
of
the instrument; refer
AM
is selected and
amplitude is set to greater than 4 dBm. To insure that
will
meet its specified performance, reduce the amplitude
4
setting to
AMunspecifiedatorbelow1.5MHz
dBm or less.
lb,
coupling
you press
+
EXT
AC)
AM
UC.
015
020
02
022
1
This is caused when
to 1.5
MHz
or less.
AM
is
To
insure that
selected and
AM
will meet its specified
RF
frequency is set
performance, increase the RF frequency setting.
Help messages off
This message is displayed when the instrument is powered
up and the rear panel help switch has been set to disable
the following error messages:
007, 008,
010,
011,
012,
position (next to the timebase adjust, labeled
001
013,
,
002,
004 , 005
014.
The second switch
“NOT
,
006
,
USED”)
controls the display of these messages.
Press
This message is displayed when the
lsAVl
to copy memory
FROM
8647/8
(IJJ
key is pressed on an
HP 83301A Memory Interface connected to the instrument.
key
to
Press the
copy the memory registers saved in
the instrument into the memory interface.
Copyingregistersfrom8647/8
This message is displayed while the memory registers are
being copied from the instrument to the HP 83301A Memory
Interface.
Press(SAV)to copymemory
This message is displayed when the key
TO
8647/8
is
pressed
on
an
HP 83301A Memory Interface connected to the instrument.
Press the key to copy memory registers that had been
saved in the memory interface into the instrument.
Operation
Messages
le-3
023
Copyingregistersto
8647/8
024
025
02
6
This message
is
displayed while the memory registers are
being copied from the HP 83301A Memory Interface to the
instrument.
Invalid
This message
data
in Memory Interface
is
displayed when the instrument detects that
the HP 83301A Memory Interface does not contain valid
memory register data. Try copying a memory register into
the memory interface first, then initiate a copy from the
memory interface
Communication failure : copy aborted
to
the instrument again.
This message is displayed when the instrument is not able to
successfully copy memory registers between the instrument
and the HP 83301A Memory Interface. This message
be displayed if the cable connecting the instrument
will
to
the
primary interface is disconnected during the copy process.
Memorycopywas successful
This message
is
displayed when the instrument has
successfully copied the memory registers between the
instrument and the HP 83301A Memory Interface. When
this message is displayed, the copy process
is
complete
and you can disconnect the memory interface from the
instrument.
Ic.4
Operation
Messages
HP-IB
-
Command
-101
Invalidcharacter
Errors
-102
-103
-104
-105
A
syntactic element contains a character which is invalid
for that type; for example, a header containing an
ampersand, SETUP&. This error might be used in place
errors
Syntax error
An unrecognized command or data type was encountered.
For example, a string was received when the
not accept strings. Additional information is available over
HP-IB.
Invalid separator
The parser was expecting a separator and encountered an
illegal character. For example, the semicolon was omitted
after a program unit, 'EMCl:CHl:VOLTS5.
Data
The parser recognized a data element different than one
allowed. For example, numeric or string data was expected
but block data was encountered.
GET
A
message (see
-121,
-141, and perhaps some others.
device
type error
not allowed
Group Execute Trigger was received within a program
IEEE
488.2.7.7).
of
does
-108
-109
-111
-112
-113
Parameter not allowed
More parameters were received than expected for the
header. For example, the *EMC common command only
accepts one parameter,
Missing parameter
Fewer parameters were received than required for the
header. For example, the *EMC common command requires
one parameter,
Header separator error
A
character which is not a legal header separator
encountered while parsing the header. For example, no
white space followed the header, thus
error.
Programmnemonictoo long
The header contains more than twelve characters (see
so
so
receiving *EMCO,l is not allowed.
receiving *EMC is not allowed.
*GMC"MACRO"
was
is in
IEEE
488.2 7.6.1.4.1).
Undefinedheader
The header is syntactically correct, but it is undefined for
this specific
any
device.
device.
For example,
*XYZ
is not defined for
Operation
Messages
lc-5
-121
Invalid character in number
An invalid character for the data type being parsed was
encountered. For example, an alpha in a decimal numeric or
a
“9” in octal data.
-123
-124
-128
-131
-134
-141
Exponent too large
The magnitude
IEEE
488.2, 7.7.2.4.1).
Too
many
of
digits
the exponent was larger than 32000 (see
The mantissa of a decimal numeric data element contained
IEEE
more than 255 digits excluding leader zeros (see
488.2
7.7.2.4.1).
Numeric data not allowed
A
legal numeric data element was received, but the
device
does not accept one in this position for the header.
Invalid suffix
The suffix does not follow the syntax described in
488.2 7.7.3.2,
Suffixtoo long
The suffix contained more than
or the suffix is inappropriate for this
12
characters (see
IEEE
device.
IEEE
488.2, 7.7.3.4).
Invalid character
data
Either the character data element contains an invalid
character or the particular element received is not valid for
the header.
-
144
-148
-158
-168
-178
Character data too long
The character data element contains more than twelve
IEEE
characters (see
Character
A
legal character data element was encountered where
data
prohibited by the
String data not allowed
A
string data element was encountered but was not allowed
by the
Block
A
device
data
legal block data element
at
not allowed
allowed by the
Expression data not allowed
A
legal expression data was encountered but was not
allowed by the
488.2 7.7.1.4).
not allowed
device.
this point in parsing.
was
encountered but was not
device
device
at this point in parsing.
at this point in parsing.
1
c-6
Operation
Messages
HP-IB
Errors
Execution
-22
1
-222 Data out of range
Settings conflict
Indicates that a legal program data element was parsed but
could not be executed due to the current device state (see
IEEE488.2 6.4.5.3
Indicates that a legal program data element was parsed but
could not be executed because the interpreted value was
outside the legal range
488.2, 11.5.1.1.5).
and
11.5.1.1.5).
as
defined by the
device
(see
IEEE
HP-IB
Device-Specific
Errors
HP-IB
Query
Errors
-330 Self
-350 Queue overflow
-410
-420
-430
-test
A
specific code entered into the queue in lieu of the code
that caused the error. This code indicates that there is
no room in the queue and an error occurred but was not
recorded.
Query INTERRUPTED
Indicates that a condition causing an INTERRUPTED Query
error occurred (see
query followed by DAB or
completely sent.
Query UNTERMINATED
Indicates that a condition causing an UNTERMINATED
Query error occurred (see IEEE
the
device
program message was received.
Query DEADLOCKED
failed
was addressed to talk and an incomplete
IEEE
488.2, 6.3.2.3).
GET
For example,
before a response was
488.2, 6.3.2.2).
For example,
a
-440
Indicates that a condition causing a DEADLOCKED Query
error occurred (see
input buffer and output buffer are full and the device
cannot continue.
query UNTERMINATED after indefinite response
Indicates that a query was received in the same program
message after an query requesting an indefinite response
was executed (see
Five secondself
This message appears when the command *tst? is sent to
the instrument over the HP-IB bus. The instrument runs a
IEEE
488.2, 6.3.1.7).
IEEE
488.2 6.5.7.5).
test
...
For example, both
Operation Messages
lc-7
subset
of
its power-up tests when this message is displayed.
The local key
is
disabled during this time.
Service
Messages
Messages numbered
500
and above relate
to
the service self
tests provided within the instrument. For information about
troubleshooting the instrument, refer to Chapter
5,
“Service.
”
IC-8
Operation Messages
2
HP-IB
Programming
Background
This signal generator adheres to the IEEE 488.1-1987, IEEE
488.2-1987 and SCPI Version 1992.0 command language.
In 1987, the IEEE released IEEE 488.2-1987, Codes, Formats,
Protocols and Common Commands for Use with IEEE 488.1-1987.
This standard defined the roles of instruments and controllers in
measurement system and a structured scheme for communication.
In particular, IEEE 488.2 described how to send commands to
instruments and how to send responses to controllers.
some frequently used housekeeping commands explicitly, but each
instrument manufacturer was left with the task of naming any other
types of commands and defining their effect. IEEE 488.2 specified
how certain types of features should be implemented
included in an instrument. It generally did not specify which features
or commands should be implemented for
Thus, it was possible that two similar instruments could each conform
to IEEE 488.2, yet they could have an entirely different command set.
Standard Commands for Programmable Instruments (SCPI) is the new
instrument command language for controlling instruments that goes
a
beyond IEEE 488.2 to address
in
a
standard manner. SCPI promotes consistency, from the remote
programming standpoint, between instruments of the same class, and
between instruments with the same functional capability.
wide variety
a
particular instrument.
of
It
defined
if
they were
instrument functions
a
HP-IB
Programming
2-1
Programming
Guidelines
What
HP-IB
is
Error
Definition
Programmable
HP-IB
Address
Messages
Programming
Language
HP-IB stands for Hewlett-Packard Interface BUS, and is often referred
to
as
the bus.
488.1-1987 and the
Programmable Instrumentation.
All functions are programmable except the front panel power key,
knobs, memory keys, increment set key, arrow keys, frequency
reference keys and the rear panel display contrast control.
The HP-IB Address for the signal generator
changed to any address between
desired two-digit number.
The HP-IB programming error messages are described in Chapter IC,
“Operation Messages.
Although many system controllers and programming software
languages are compatible with this instrument, all examples and
references in this manual assume the use of an HP controller utilizing
the HP BASIC programming language.
Most instrument settings may be queried via HP-IB. The data returned
from the query will vary from a yes/no
depending
It
is Hewlett-Packard’s implementation of the
IEEE
488.2-1987 Standard Digital Interface for
is
preset to
00
and 30, by pressing
”
(1/0)
to the actual setting,
on
the function. See Table 2-1.
19.
IEEE
It
may be
and the
Advanced
Programming
For the majority of applications, remotely programming the signal
generator requires only basic programming knowledge and the
command statements listed later in this chapter. Developing
programs for querying the instrument’s status
an advanced application (see “HP-IB Status Reporting.
information on HP-IB programming see the
Hewktt-Ftzckard Interfuce
Bus
(HP Part number 5952-0156).
is
considered to be
”)
For more
Tutorial Description of the
HP-IB
Programming
2-3
Programming
Examples
Examples are provided here to help you understand the required
programming structure. All examples use the HP BASIC programming
language. See Table
2-1
for a complete listing of commands.
Note
Programming RF
Frequency
Programming RF
Frequency and
Modulation
FM
Command statements may be concatenated on the same line
if
separated by a semicolon. A colon must precede successive command
statements to ensure command hierarchy.
OUTPUT
The output statement (HP BASIC) tells the system
controller to output what follows.
7
19
Semicolon
The Input/Output select code of the system controller
is
7.
The HP-IB address of the signal generator
A
(;)
semicolon separates the HP BASIC command from
is
19.
the output string that follows.
Quotes
("
FREQ:CW
All command statements must be contained in quotes.
")
This command programs the RF frequency. FREQ
must be in the statement first representing
hierarchy over :CW. The colon
(:)
is
used to separate
its
the command hierarchy. The signal generator will be
lIlI-ITPI_IT
E],::T
j
:
FP1:
111
1.1
'
I
FM:
DEV
71'3;
E::.(T:
programmed to
"FREI;!:
I~l~lIJp
I:Lij
588
HI:
i
:
HH:
This command programs the
a
RF frequency of
MHZ;
:
FP1:
!;THT
IZIFFj
500
MHz.
DE'd 3 KHZj : FP1:SIIII-IR
:
F'N:
STHT
OFF
j
:
FPI
FM
deviation. FM
:
STHT
is
higher than DEV in the command hierarchy and is
(:).
separated by a colon
be programmed to
The signal generator will
3
kHz
of
deviation.
2-4
HP-IB
Programming
Semicolon
(;)
FM:SOUR:EXT
FM:EXT:COUP
FM:STAT
ON
A semicolon separates completed command
statements.
This command selects the external path for the
modulation source.
AC
This command selects ac coupling.
This command changes the FM modulation to an
A
on state.
on before it
formats must be turned
desired modulation (AM:STAT
modulation format must be turned
is
active. The other two modulation
off
prior to activating the
OFF
and PM:STAT
OFF).
Line
100
This command outputs a query for the RF frequency
setting. You may attach
a
question mark
(?)
to any
of
the signal generators' commands to query its setting.
Programing
Amp1itude
RF
Line
200
This command enters the queried frequency setting
into the variable Freq-set.
Line
300
OI-ITF'I-IT
719;
This command prints the queried frequency setting.
"POW:
HMPL
-47
DE:M; : OUTP:
STHT
i:it4J"
P0W:AMPL This command programs the RF amplitude. POW is
higher than AMPL in the command hierarchy and
is
0UTP:STAT
separated
amplitude will be programmed to
ON
This command changes the
state. The RF amplitude defaults to an
by
a colon. The signal generator's RF
-47
dBm.
RF
amplitude to an on
off
state when
the instrument is powered on.
HP-I8
Programming
2-5
mble
2-1.
Programming Command Statements and Descriptions
0UTP:STAT
0UTP:SIIAT OFF
P0W:AMPL <value>
P0W:ATT:AUTO ON
P0W:ATI':AUTO OFF
P0W:REF <value> <units>
P0W:REF:STAT ON
P0W:REF:STAT OFF
FREQ:CW <value> <units>
Modulation
Amplitude Modulation
AM:DEPT <value> PCT
AM:STAT
AM:STAT OFF
AM:SOUR INT
AM:SOUR EXT
AM:SOUR INT,EXT
AM:INT:FREQ
AM:INT:FREQ
AM:EXT:COUP DC
AM:EXT:COUP AC
Frequency Modulation
CAL: DCFM
FM:DEV <value>
FM:STAT ON
FM:STAT OFF
FM:SOUR INT
FM:SOUR EXT
FM:SOUR INT,EXT
FM:INT:FREQ
FM:INT:FREQ
FM:EXT:COUP DC
FM:EXT:COUP AC
ON
ON
1
KHZ
400
1
KHZ
400
<units>
HZ
KHZ
HZ
Turns the RF output on.
Turns the RF output
Sets
the amplitude of the RF output to the desired
<value> and <units>. <value> may be up to
plus
a
sign
if
resolution of
DBM,
MV,
UV,
reference mode only DB or DBM are allowed.
Turns automatic attenuator control on (this
on).
Turns automatic attenuator control off and holds
present attenuator setting.
Sets
a
reference to the <value> in
described in setting amplitude. Reference state must be
on, to be active.
Sets
reference to on, making all amplitude changes
relative to the reference.
Sets
reference to
absolute.
Sets the RF frequency to the <value> and <units>.
<value> may be up to
Hz
resolution. <units> may be
Sets AM depth in
Sets AM on, FM and PM must have state
Sets AM
Selects internal source.
Selects external source.
Selects internal and external sources
Selects internal
Selects internal
AM cannot
Selects external ac-coupling for AM.
Eliminates dc FM offset.
Sets FM deviation in
and
10.0
off.
be
to
99.9,
off.
applicable, e.g.
.1
dB,
.001
MVEMF, UVEMF, DBUV, DBUVEMF.
off,
%,
<value> from
1
kHz
400
Hz
dc-coupled (SCPI allows command).
kHz,
<value> may
-127.1
or maximum
mV,
.01
pV.
<units>
<units>
making all amplitude changes
9
digits with a maximum of
MHZ, KHZ
.1
frequency.
frequency.
<value> from
also
be
may be
is
normally
as
or
HZ.
to
99.9
off.
0.00
to
entered in
4
9.99
digits
If
10
Hz
in
(HZ).
Sets FM on, AM and PM must have state off.
Sets FM
Selects internal source for FM.
Selects external source for FM.
Selects internal and external source.
Selects internal
Selects internal
Selects external dc coupling for
Selects external ac coupling for
PM:mT
PM:mT OFF
PM:SOUR INT
PM:SOUR EXT
PM:SOUR INT,EXT
PM:INT:FREQ 1
PM:INT:FREQ
PM:EXT:COUP
PM:EXT:COUP AC
Standard
SWT:QUES:POW:ENAB<NRl>
SWT:QUES:MOD:ENAB< NR1>
ON
400
Commands
KHZ
DC
HZ
2-1.
Programming Command Statements and Descriptions (continued)
for
Status
Description Query
in
Set phase modulation
0.00 to
9.99
and 10.0
Sets
PM on. AM and FM must have state
Sets
PM
off.
Selects internal source for PM.
Selects external source for PM.
Selects internal and external source.
Status
1
400
&porting
Selects internal
Selects internal
Selects external dc coupling for PM.
Selects external ac coupling for PM.
&e
HP-IB
Returns contents of the power condition register.
Enables <NR1> event registers for power.
Returns contents of enabled event registers for power.
Returns contents
Enables <NR1> event registers for modulation.
Returns contents of enabled registers for modulation.
radians (RAD), <value> from
off.
kHz
frequency.
Hz
frequency.
examples
of
the modulation condition register
~
PM:DEV?
PM:STAT?
PM:SOUR?
PM:INT:FREQ?
PM:EXT:COUP?
SIXT:QUES:POW:COND?
SIIAT:QUES:POW:EVEN?
SWT:QUES:MOD:COND?
SIXT:QUES:MOD:EVEN?
*RST
WAI
'CLS
'ESE <dec. nun. data>
'OPC
*SRE <dec. mum. data>
Resets the signal generator to a default state (see SCPI
Command Reference).
Returns the instrument's identity.
Executes an instrument self-test.
Instrument waits until previous commands are
completed.
Clears status and event registers.
Enables Standard Event Status Register bits.
Queries the Standard Event Status Enable Register.
Queries the Standard event Status Register.
Enables the Operation Complete bit of the Standard
Event Status Register.
Queries the Operation Complete bit of the Standard
Event Register.
Enables the bits in the Status Byte that will cause
Service Request.
Queries the Service Request Enable Register.
Queries the Status Byte with the MSS bit.
a
*IDN?
*TSr?
*ESE?
*ESR?
*OPC?
*
SRE?
*
STB?
HP-IB Programming
2.7
HP-IB
Status
Reporting
Reverse
Unspecitled Amplitude
Power
POWer
Status
Register
The IEEE
reporting. This status byte may be accessed by using IEEE
488.2
standard provides a status byte for instrument status
488.2
Common Commands and SCPI Status Commands. The following figure
shows the status reporting structure for instrument operation.
The following examples will be used to explain instrument operation
status.
rn
External Modulation Input Status
rn
Reverse Power Protection Status
rn
Unspecified Power (Amplitude) Entry Status
488.2
General IEEE
status reporting will not be covered. The above
operating status will satisfy most needs for status reporting.
NOTE:
Unmarked
tits
in
registers
do
apply
for
normal
blts
mclrt
status.
operation
be
See
These
querying
programming examples.
not
st~tus.
masked when
me
Ext.
Mod.
Ext
status.dnv
Level Hlgh
Mod.
Level Low
Unspecified
Figure
2-1.
Devlce
HP
Dependent
Execdon
Comnand
8647A
Em
Em
Error
Status
Register Model
2-8
HP-IB Programming
External Modulation
Input Level Status
External modulation input level status may be queried for high, low
or input level correct. The instrument automatically detects the input
(1
level
Vpk into
600
ohms for full scale modulation) and displays
the result on the front panel display but must be queried for HP-IB
reporting.
Example: Check the
Low)
18
OUTPUT
28
Et.jTER
38
tli:i!j=B
48
IF
58
rloid=B I t.IHt.ID
Eu8
IF
78
Et.jK1
Line
10
Line
20
Line
30
719;
I
Mod=l
tlolj=2
71’3;
“STHT: QUES:
$'slue
t.jHt.IL1
THEN PRIt4T
THEt.4
I::’O).~
1
IJE.
1
IJe
F‘FIItJT
Queries the condition of the MODulation register.
Besides querying the condition you may also query
if an event has occurred, such
modulation input being high or low
time. Replace the COND? with EVEN? to read the
event status. Reading the event status clears the
register.
Enters the condition of the MODulation register into
the variable “Value”.
Uses the HP Basic command, BINAND to check the
contents of bit
reported
equal
Condition
MEID:
1
“Ext.
Mcld.
9
2)
”E;.:t..
MI:I!~.
0
in “Value”. If bit 0 is
as
a decimal equivalent
“
1
”.
of
Modulation
tZtItt.iD?”
Input.
Input.
Hi&I”
LI:zI.,.I”
as
the external
“1”
Input
at
(High
some previous
a
“1”
it will be
and “Mod” will
or
Line
Line
Line
40
50
60
Checks if the MODulation condition is
prints that the external modulation input
‘I
1
” and
is
high.
Uses the HP Basic command, BINAND to check
1
the contents of bit
equivalent
“2”)
in “Value”.
is
a
“l”,
“Mod”
Checks if the MODulation condition is
If
bit 1 (decimal
will equal
“2”
“1”.
and
if
prints that the external modulation input is low.
if
true,
true,
HP-IB Programming
2-9
Example: Generate a Service Request for External
Modulation Input
18
I:IIJTPI-IT
20
IIII-ITF'I-IT
:38
iIil-lTPl)T
48
IF
Cl&.
PlZt.
58
IIILlTPlJT
ceJ8
Et.jD
Line
10
SPIIlLL
elj
71'3;
":STHT: QIJES:
71'3;
"STFIT: QIJES:
714;
ll+:;RE
(7
1'3
:I
71'3;
"+lI:LS"
Enables bits 0 and 1 (decimal equivalent
MODulation register. Enabling these bits masks other
bits in the MODulation register from reporting their
status in the summary bit to QUEStionable.
(High
THE14
::;I1
FFF:
or
1
Low)
tKC1:
EHHB
t.IT
II
Ext.
Et433
12:8"
.
t$:ld.
3"
1
rlpijt.
Hi
qh
...'L~J
3)
in the
Line 20
Line
30
Line
40
Line
50
7
Enables bit
(decimal equivalent 128) in the
QUEStionable register. Enabling this bit masks other
bits in the QUEStionable register from reporting their
status in the summary bit to STATUS.
3
Enables bit
(decimal equivalent
register. Enabling
this
bit masks other bits from
8)
of
the STATUS
reporting.
Uses the HP Basic command, SPOLL, (Serial
to see if the service request bit
is
reporting any
Poll)
interrupts.
Clears
all
status registers. Clearing the status registers
is not absolutely necessary, but is used here because
of the unknown state of the instrument.
2-10
HP-IB Programming
Reverse
Protection
Power
Status
This instrument provides protection from signals inadvertently applied
is
to the RF output of the instrument. This protection
commonly
called reverse power protection (RPP). The instrument automatically
detects the reverse power, which in turn, disconnects the instruments
will
RF output. When the RPP engages, the front panel display
read
RF OFF but must be queried for HP-IB reporting.
Example: Check the
18
IIIIJTFI-IT
28
EEjTEE
;:a
F:pp=B
48
IF
58
1
1:l:It-rel~t.
688
IF H$="'f"THEt.j IIlIJTPI-IT71'~; "IIIlJTF': !STHT
--
-.
i'd
tNL3
RFp=1
F
Rpp=
elj
.-
7
1
t.jHbj[>
Line 10
Line
20
"!zTHT: G!I-IE:S:
719;
$'a
13
j
('u'a
THEN FF:INT
1
THEN 1 t.jPlJT
(
'r',+l
;a
'I
Queries the condition of the POWer register.
Enters the condition of the POWer register into the
1
IJ~
1
IJe
9
H$
condition
PCtW:
3
1
::I
"WF
is
15
t-ea.>et-se poi.,jet- i npijt.
of
~~Cl~j[:l'?'"
eri~~a~3ed"
variable "Value".
Line 30
40
Line
Uses the HP Basic command,
contents of bit
will
equal
Checks
if
0
in "Value". If bit 0 is a
" 1 "
,
the RPP condition is
that the RPP is engaged.
Line
50
Checks if RPP condition is
situation has been corrected.
Line 60
Checks if the answer was yes to correction and
turns the RF output on to reset the RPP.
the
RPP
I:It.j"
BINAND
"1"
1
'
and if true
to
check the
"l",
"Rpp"
and if true prints
asks
if
the
if
true
Unspecified Power
(Amplitude) Entry
Status
This instrument provides a message if an amplitude entry is requested
above
hold range is exceeded (see operating part of manual). When
unspecified amplitude
"Amplitude exceeds specified range,
+
10 dBm and less than or equal to
is
entered, the front panel display will read
"
+
13
dBm or an attenuator
an
but must be queried for HP-IB
reporting.
HP-IB Programming
2-1
1
Example: Check the Condition
of
Unspecified Power
Entry
10
I:IIATF'IlT
18
Et.jTER
:::a
F'l:lI,.I-spelz=B
48
IF
58
E
t.j[:l
Line
10
Line
20
Line
30
Line
40
"STHT:
71'3;
71'3:'t).al1~e
I
t.jHt.jD
FI:II.,,I-~~~I:=~
THE14 PRIbjT
Queries the condition of the POWer register. Besides
querying the condition you may also query if
event has occurred. Replace the COND?
to read the event status. Reading the event status
clears the register.
Enters the condition
variable "Value".
Uses the
the contents of
Pow-spec will equal
Checks if Pow-spec equals 2 and then prints that the
amplitude is in
1::
Ini'a
IS!I-IES:
FOW:
I~OHD?"
1
IJe
3
2
:I
"Mmpl
HP
Basic command, BINAND to check
bit
it.ude
of
1
in "Value".
iunspecif
the POWer register into the
If
bit 1 is "high",
"2".
an
unspecified range.
ied"
with
an
EVEN?
2-12
HP-IB Programming
HP
8647A
Command
Reference
SCPI
Wble
2-2.
Dictionary
of
Terms
Terms
<NRf>
<NRl>
<AM term>
<freq term>
~
<angle term>
<amp1 term>
DescriD tion
Indicates an ASCII representation of a number if required
in the command statement. The number may be an integer
or floating-point, and may include a decimal exponent. (nrf
stands for “flexible numeric representation”. For further
488.2
information, refer to the IEEE
Indicates an ASCII representation of
standard.)
a
number if required
in the command statement. The number must be an integer
and may not include decimal points. For further
488.2
information, refer to the IEEE
Indicates that a
“PCT”
command statement.
termination
If
no termination is specified, a “PCT”
standard.)
is
required in the
value is assumed.
Indicates that
termination
command is not terminated then
a
“HZ”,
is
required in the command statement. IF the
”KHZ”,
“GHZ”,
“HZ”
or
“MHZ”
is assumed.
~~ ~~
Indicates that a “RAD” termination is required in the
command statement. If no termination is specified then
“RAD”
Indicates that a “DB”, “DBM”, “DBUV”,
is assumed.
“UV”,
“MV”,
“V”,
“UVEMF”, “MVEMF”, or “DBUVEMF” termination is
required in the command statement.
specified then “DBM”
is
assumed.
If
no termination
is
[command]
Bracketed commands are optional. SCPI assumes the
optional command
Parameters separated by
is
acceptable.
Parameters separated by
parameters
are
is
present.
allowed.
“1”
indicates that either parameter
“,
”
indicates that multiple
HP-IB Programming
2-13
AM
Subsystem
CSOURcel
:
AM
AM
Sets
[
:
DEPTh]
[:DEPTh] <NRf>
?
[<AM
term>]
depth in percent. *RST value
:
STATe?
ON
I
OFF
I
1
I
:STATe
0
is
30%.
Turns
AM
modulation
ON
or OFF. AM
AM:DEPTh. Turning AM modulation
is
not turned on by just setting
ON
will not automatically turn
OFF any other types of modulation. Turning any or all modulation
types
ON
turned
is
-221
or OFF must be done explicitly.
ON
while another modulation type
generated, and the state of the instrument
If
a
modulation type is
is
ON,
an execution error
is
unchanged. *RST
value is OFF.
:
SOURce?
:SOURce INTernal
Selects
AM
source. 'RST value is INTernal.
:
EXTernal
:
COUPling?
:COUPling
Sets source coupling for
I
EXTernal [,INTernal 1,EXTernalI
AC
I
DC
AM.
The GROund parameter defined by the
1991 SCPI Command Reference (17.1.9.2) is not supported. *RST
value is
DC.
:
INTernal
:FREQuency?
:
FREQuency
Sets the frequency of the
400
Hz
and
1
kHz.
*RST value
<NRf
>
[<f
req term>]
AM
internal signal source. Legal values are
is
1
kHz.
2.14
CAL
HP-IB
Programming
Subsystem
[SOURcel
:
CAL
:
DCFM
Eliminates the offset in dc FM
so
that the carrier frequency remains
the same with no modulation applied. External dc modulation
must be
on
to implement this calibration or execution error -221
generated.
is
FM
Subsystem
[SOURcel
:
FM
[
:
DEViat ion]
[
:
DEViat ion]
?
<NRf
>
[<f
req term>]
Sets FM deviation. *RST value is
:
STATe?
ON
I
:STATe
OFF
3
kHz.
I
1
I
0
Turns FM modulation ON or OFF. FM is not turned on by just setting
ON
FM:DEViation. Turning FM modulation
will not automatically turn
OFF any other types of modulation. Turning any or all modulation
types
ON
or OFF must be done explicitly.
turned
-221
*RST value is
ON
while another modulation type
is generated, and the state of the instrument is unchanged.
OFF'.
:
SOURce?
:
SOURce INTernal 1 EXTernal
If
a modulation type is
is
ON,
an execution error
[,
INTernal I ,EXTernall
Selects FM source. *RST value is INTernal.
:
EXTernal
:
COUPling?
:COUPling
AC I DC
Sets source coupling for FM. The GROund parameter defined by the
1991 SCPI Command Reference (17.4.9.2) is not supported. *RST
value is
DC.
:
INTernal
:FREQuency?
>
[<f
:
FREQuency
<NRf
req term>]
Sets the frequency of the FM internal signal source. Legal values are
400
Hz
and
1
kHz.
*RST value
is
1
kHz.
HP-IB Programming
2-15
Subsystem
:FREQuency
C:CW
I
:FIXedl?
[:CW
I
:FIXedl
CNRf>
[<freq term>]
This function selects a frequency for the continuous wave non-swept
is
100
signal. *RST value
MHz.
OUTPut
Subsystem
Omput
:
STATe?
ON
I
OFF
I
1
I
:STATe
0
This function controls the state of the RF output. When
0UTPut:STATe is OFF, the RF source level is set to
ON
0UTPut:STATe
causes the programmed
CW
off.
signal to be present at
the output terminal. *RST value is OFF.
Turning
2-16
HP-18 Programming
PM
Subsystem
CSOURcel
:
PM
[:DEViation]?
[:DEViation] <NRf> [<angle term>]
Sets PM deviation in radians. *RST value is 1.0
:
STATe?
:STATe
Turns PM modulation
PM:DEViation. Turning FM modulation
ON I OFF
ON
or OFF. PM is not turned on by just setting
I 1 I
0
ON
RAD.
will not automatically turn
OFF any other types of modulation. Turning any or all modulation
ON
or
OFF
types
ON
turned
while another modulation type is
-221 is generated,
must be done explicitly.
and
the state of the instrument is changed. *RST
If
a modulation type is
ON,
an execution error
value is OFF.
:
SOURce?
1
:
SOURce
INTernal
Selects PM source. *RST value
:
EXTernal
EXTernal
is
INTernal.
[,
INTernal I ,EXTernall
:Cowling?
:COUPling
AC
I
DC
Sets source coupling for PM. The GROund parameter defined by the
is
1991 SCPI Command Reference (17.10.9.2)
value is
DC
:
INTernal
not supported. *RST
:FREQuency?
>
:
FREQuency
<NRf
[<f req
term>]
Sets the frequency of the PM internal signal source. Legal values are
400
Hz
and
1
kHz.
*RST value is
1
kHz.
HP-IB
Programming
2-17
POWer
Subsystem
CSOURcel
:
POWer
[
:
LEVel]
[
:
IMMediate]
[
:
AMPLitude]
?
Returns the value of the current
DBM
units of
if P0Wer:REFerence:STATe is OFF, or it is in
to the current value of P0Wer:REFerence
ON.
is
[
:
LEVel]
[
:
IMMediate]
CW
amplitude. The return value is in
if
P0Wer:REFerence:STATe
[
:
AMPLitude]
term>]
Sets
CW
amplitude. *RST value is
:
ATTenuat ion
-136
dBm.
:AUTO?
:AUTO
When set
OFF
value is
ON,
the firmware
causes the attenuator range to hold to it's present setting.
ON
ON
I
OFF
I
1
I
0
will
control the attenuators. Turning it
:REFerence?
:REFerence
CNRf>
Sets a reference value which, if STATe is
parameters to be queriedhet
0
value is
dBm.
:
STATe?
:STATe
ON
I
OFF
[<amp1
as
I
1
term>]
ON,
allows all amplitude
relative to the reference value. *RST
I
0
<NRf
>
DB,
relative
[Campl
'RST
Determines whether amplitude is output in absolute or relative mode.
*RST value is
OFF.
2-1
8
HP-IB
Programming
STATUS
Subsystem
STATUS
:
QUESt ionable
C
:
EVENt]
?
Returns the contents
of
the event register associated with the status
structure.
:
CONDit ion?
Returns the contents
of
the condition register associated with the
status structure. Reading the condition register is nondestructive.
:
ENABle <NRl>
Sets the enable mask which allows true conditions in the event
register to be reported in the summary bit.
:
ENABle?
Queries the enable mask.
:
POWer
[
:
EVENt]
?
:CONDition?
:
ENABle <NR1>
:
ENABle?
:
MODulat ion
[
:
EVENtl
?
:CONDition?
:
ENABle <NRl>
:
ENABle?
HP-IB Programming
2-19
SYSTem
Subsystem
SYSTem
:
ERRor?
Returns
any
system error message. The format of the response is
<error number>, <error string>.
:
VERSion?
Returns a formatted numeric value corresponding to the
number
response
1990)
for which the instrument complies. The format of the
is
YYYYV.
and the V represents
The Ys represent the year version (for example,
an
approved revision number for that
year.
SCPI
version
2.20
HP-IB
Programming
HP-IB
Capabilities
The instrument is designed to be compatible with a controller that
interfaces in terms of the bus codes summarized in the table.
table describes each of the interface functions that are available with
as
this instrument
defined by the IEEE 488.2-1987
This
Capability
Source Handshake
Acceptor Handshake
mker
Listener
Service Request
Remote Local
Parallel Poll
Device Clear
Device Trigger
Controller
Electrical Interface
Code
SH1 Full Capability
AH1
T6, TEO Basic Talker, Serial Poll, untalk on
L4,
SR 1 Full Capability
RL1
PPO
I
DC1
I
DTO
1
CO
I
E2
Full Capability
LEO Basic Listener, unlisten on MTA
~ ~~ ~
Full Capability
No
Capability
I
Full Capability
1
No
Capability
1
No
Capability
I
Tristate
(1
Comment
MB/sec
Max)
MLA
~
HP-IB
Programming
2-21
HP-IB
Connector
Information
Should be grounded
near termination
other
wire
pair
The
Hewlelt-Packard Interface
false state
(0)
is
+2.5
Hewlett-Packard Interface
Signal Ground
of
Vdc
of
twiated
Bus
to
+5
P/O Twisted Pair With
Pi0 Twisted Pair With
P/O Twisted Pair
P/O
Twisted
P/O Twisted Pair
PI0 Twisted Pair With
Isometric
M3.5
Thread
logic levels are
Vdc.
x
11
10
With
9
Pair
With
Witt,
REN
D108
D107
D106
Dl05
0.6
llL
compatible, that
8
7
6
-b
0
0
is,
Bus
Connect to earth
Shield,
ATN
SRQ
IFC
NDAC
NRFD
DAV
EO1
D104
D103
D102
0101
24 Pin MicreRibbon
(Series
57)
the true (1) state is
Connector
0.0
Vdc to
ground
+0.4
Vdc
and
the
HP 1251-0293; Amphenol 57-30240
HP
10833A4,
HP 108033B,2 meters
HP 10833C, 4 meters (13.2
HP 108330,
1.
A
2.
The maximum accumlative length
n:banuals\boilervlpibcon
2-22
HP-IB Programming
1 meter
(3.3
ft.)
(6.8
ft.)
.dw
ft.)
ft.)
of
connecting cable for any Hewett-Packard Interface
0.5
meters (1.6
Hewiett-Packard Interface Bus system may contain no more than 2 meters (6.6
1
lt.)
of
connecting cable per instrument.
Bus
system is
20
meters
(65.5
ft.).
Installation
Unpacking
Signal Generator
Your
Warning
1.
Unpack the contents of the shipping container.
2.
Inspect the shipping container for damage.
If
the shipping container is damaged or the cushioning material
inside is stressed, keep them until you have checked the
instrument for proper operation.
3.
Inspect the signal generator to ensure that
during shipment.
If
mechanical damage or defects have occurred, notify the carrier
as
well
as
the Hewlett-Packard ofice. Keep the shipping materials
for inspection by the carrier.
~~
To
avoid hazardous electrical shock, do not connect
the
instrument when there
any portion of
the
outer enclosure (cover and panels).
are
any signs of shipping damage to
it
was not damaged
AC
3
power to
Connecting
Power
Warning
Caution
AC
Ventilation Requirements: When installing the instrument in a
cabinet, the convection into and out of the instrument must not be
restricted. The ambient temperature (outside the cabinet) must be
less than the maximum operating temperature of the instrument
by
4
"C
for every
power dissipated in the cabinet is greater than
convection must be used.
This instrument is equipped
connected to an appropriate ac power receptacle, this cable grounds
with
a three-wire power cable. When
Installation
3-1
the instrument cabinet. The type of Mains plug shipped with each
instrument depends on the country of destination. Refer to Figure 3-2
for the part numbers of the power cables and mains plugs available.
Power Requirements
Caution
Replacing the Fuse
The signal generator requires a power source of either 50/60/400 Hz
at 100/120
nominal voltage values
150
VA
This instrument has autoranging line voltage input; be sure the supply
voltage is within the specified range.
If
a fuse failure is suspected, replace the 250
part number 2110-0780)
1. Unplug the power cord from the line module.
2. Use a flat-bladed screw driver to pry and unseat the fuse housing
from the line module.
V
or 50/60 Hz at 200/240
maximum.
"hble
3-1.
Voltage Ranges
I
Available
V.
The voltage ranges for these
are
shown in Bble 3-1. Power consumption is
for
Nominal Voltage Values
ac
Voltage 1 Voltage Range
90
to
110 V rms
108 to 132
198 to 242
216 to 250
V,
as
follows:
V
V
V
3A, type F fuse (HP
I
rms
rms
rms
3. Remove the cartridge and inspect the fuse positioned toward the
front of the instrument.
3-2
Installation
....
0
0.0
....
0 0 0
Figure
3-1.
Replacing the Fuse
Installation
3-3
PLUG TYPE
*
*
CABLE
HP PART
NUMBER
PLUG
DESCRIPTION
CABLE
LENGTH
CM
(INCHES)
CABLE
COLOR
FOR USE
IN COUNTRY
250V
250V
250V
125V
fi
8 120-1 351
8120-1703
8 1 20- 1369
8 120-0696
81 20-1689
8
1
20- 1692
8120-1348
81 20-1 538
81 20-1 378
8 120-4753
8 120-1 521
8 120-4754
BS1363A
gh
r a
i
g h t
gh
t*
*
CEE7-Y11
NEMA5-
*
t
1
5P
St ra i
9
oo
Straight* NZSS198/ASC11:
9
oo
Straight
9
oo
Straight* NEMA5-15P
goo
S
t
St ra i
o'
9
9
oo
229 (90)
229
(90)
201 (79)
221 (87)
201 (79)
201 (79)
203 (80)
203 (80)
203 (80)
230 (90)
203 (80)
230 (90)
Mint Gray
Mint Gray
Gray
Gray
dint Gray
Mint Gray
~l~~k
I
ack
B
jade
troy
Jade Gray
Jade Gray
Great Britain,
Cyprus, Nigeria,
Singapore,
Z irnbabwe
Argentina,
Australia,
New Zealond,
Mainland Chino
East and West
Europe. Central
African Republic
United Arab
Republ
(unpolarized in
many
United States
Canada.
Japan (100
200 v), Brazi
Colombia, Mexico
Phi
Saudi0 Arabia,
Taiwan
ic
nations)
1
i
pp i nes,
V
or
1,
250V
*
**
FORMAT80
81 20-5 182
8 120-5
Part number for plug
HP
Port Number for complete cable, including plug.
E = Earth Ground;
1 8 1
St
ra i
gh
t* NEMA5-?
3
0'
is
industry identifier
L
=
Line; N = Neutral.
Figure
3-2.
Power Cable
5P
and
200 (78)
200 (78)
for
plug only. Number shown for cable is
Jade Gray
Jade Gray
Israel
Mains Plug
3.4
Installation
Turning On the
Signal Generator
If you are operating this instrument in extreme environmental
conditions, refer to the following operation limitations.
The following minimum conditions are required for safe operation
this instrument:
I
Indoor use
I
Altitude
I
Temperature:
w
Maximum relative humidity
decreasing linearly to
<
4572
meters (15,000 feet)
0
"
to
50
"C, unless specified differently
50%
80%
for temperatures up to
relative humidity
at
40
OC
31
OC
of
Caution
Connecting
Other
Instruments
to
v
Storing the Signal
Generat
or
The instrument performs a diagnostic self test on power-up.
problems are detected with functionality it will display
"
Refer to Chapter IC, "Operation Messages,
for further information
a
message.
about the messages.
This instrument
Pollution Degree 2 per IEC 1010 and
Coaxial
either
mating connectors used with the signal generator should be
500
with those specified in
The instrument should be stored in a clean,
BNC
is
designed for use in Installation Category
664
respectively.
or
500
type N male connectors that are compatible
UL
MIL-C-39012.
dry
environment. The
I1
following environmental limitations apply to both storage and
shipment.
Temperature -20 OC to
I
Humidity < 95% relative
+
70
"C
If
and
any
Note
I
Altitude 15,300 meters
(50,000
feet)
The cabinet should only be cleaned using
a
damp cloth.
Installation
3-5
Shipping
Generator
th
.e
Signal
Containers and materials identical to those used in factory packaging
If
are available through Hewlett-Packard offices.
is being returned to Hewlett-Packard for servicing, attach a tag
indicating the type of service required, return address, model number,
and full serial number. Also, mark the container
careful handling. In any correspondence, refer to the instrument by
model number and full serial number.
If
you are using other packaging, follow the guidelines below:
1.
Wrap the instrument in heavy paper or plastic.
2.
Use a strong shipping container. A double-wall carton made of
MPa
(350
psi) test material is adequate.
3.
Use enough shock-absorbing material
3
to
4
inches) around all sides of the instrument to provide a firm
cushion and
front-panel
4.
Seal the shipping container securely.
5.
Mark the shipping container
to
prevent movement
with
cardboard.
FRAGILE
(75
in
the container. Protect the
to assure careful handling.
the instrument
FRAGLLE
to
100
millimeter layer;
to assure
2.4
3.6
Installation
Specifications
This chapter contains specifications and supplemental characteristics
HP
for the
8647A signal generator.
Specifications describe the instrument’s warranted performance
over the
temperature range and apply after a
30
minute
0
to
50°
warm-up unless otherwise noted. All performance below a carrier
250
kHz
frequency of
1
Supplemental characteristics (shown in italics) are intended
is typical.
to
provide information useful in estimating instrument capability
in your application by describing typical, but non-warranted
performance.
Specifications
4-1
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