S
Agilent 81110A 165/330MHz
Agilent 81104A 80 MHz Pulse/Data Generator
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Reference Guide
Agilent 81110A 165/330 MHz,
Agilent 81104A 80 MHz
Pulse/Pattern Generators
Part No. 81110-91021
Printed in Germany April 2000
Edition 1.1, E0400
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Notice
Copyright
Agilent Technologies 1998, 2000
Herrenberger Str. 110140
71034 Boeblingen
Germany
All rights reserved. Reproduction, adaptation or translation without prior
written permission is prohibited, except as allowed under the copyright
laws.
Warranty
This Agilent product has a warranty against defects in material and
workmanship for a period of three years from date of shipment. During
the warranty period, Agilent Technologies will, at its option, either repair
or replace products that prove to be defective. For warranty service or
repair, this product must be returned to a service facility designated by
Agilent Technologies. The Buyer shall pay Agilents round-trip travel
expenses. For products returned to Agilent Technologies for warranty
service, the Buyer shall prepay shipping charges to Agilent and Agilent
shall pay shipping charges to return the product to the Buyer. However,
the Buyer shall pay all shipping charges, duties and taxes for products
returned to Agilent Technologies from another country. Agilent
Technologies warrants that its software and firmware designated by
Agilent for use with an instrument will execute its programming
instructions when properly installed on that instrument. Agilent does not
warrant that the operation of the instrument software, or firmware, will
be uninterrupted or error free.
4
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Limitation of Warranty
The foregoing warranty shall not apply to defects resulting from
improper or inadequate maintenance by the 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. Agilent Technologies
specifically disclaims the implied warranties of merchantability and
fitness for a particular purpose.
Exclusive Remedies
The remedies supplied are the Buyers sole and exclusive remedies.
Agilent Technologies shall not be liable for any direct, indirect, special,
incidental, or consequential damages, whether based on contract, tort or
any other legal theory.
Assistance
Product maintenance agreements and other customer assistance
agreements are available for Agilent products. For any assistance,
contact your nearest Agilent Sales Office.
Certification
Agilent Technologies Company certifies that this product met its
published specifications at the time of shipment. Agilent further certifies
that its calibration measurements are traceable to the United States
Institute of Standards and Technology, to the extent allowed by the
Institute's calibrating facility, and to the calibration facilities of other
International Standards Organization members.
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About this book
This guide provides reference information primarily for programming the
Agilent 81104A and Agilent 81110A via remote control.
Chapter 1 General Programming Aspects on page 13 gives general
hints for programming instruments like the Agilent 81110A using SCPI
commands.
Chapter 2 Programming Reference on page 25 provides detailed
information on the SCPI commands supported by the instrument.
Chapter 3 Specifications on page 101 lists the instruments technical
specifications and provides exact definitions for the instruments
parameters.
For an introduction and information on the Agilent 81110As user
interface, please refer to the Quick Start Guide, p/n 81110-91020.
The information is valid for Agilent 81104A and Agilent 81110A. Where
required the differences are explicitly mentioned. Possible
configurations are:
6
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Output Modules
Both the Agilent 81110A and Agilent 81104A mainframes can be
configured with either one or two output modules. These output modules
must be of the same type.
The standard mainframe configuration is with one output module only.
This manual describes the configuration with two output modules. Some
of the features described here are not available for the standard
configuration.
Output Modules for Agilent 81104A Mainframes
Module Description Max. Quantity
Agilent
81105A
10V/ max.80 MHz Output Channel 2
Output Modules for Agilent 81110A Mainframes
Module Description Max. Quantity
Agilent
81111A
Agilent
81112A
10V/ max. 165 MHz Output Channel 2
3.8V/ max. 330 MHz Output Channel 2
7
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Safety Information
Safety
This is a Safety Class 1 instrument (provided with terminal for protective
earthing). Before applying power, verify that the correct safety
precautions are taken (see the following warnings). In addition, note the
external markings on the instrument that are described under Safety
Symbols. Do not operate the instrument with its covers removed.
Replace fuse only with specified type.
Warning
Before turning on the instrument, you must connect the protective earth
terminal of the instrument to the protective earth conductor of the
(mains) power cord. The mains plug must only be inserted in a socket
outlet with a protective earth contact. Do not negate the protective
action by using an extension power cord without a protective grounding
conductor. Grounding one conductor of a two-conductor outlet is not
sufficient protection.
Service instructions are for trained service personnel. To avoid
dangerous electric shock, do not perform any service unless qualified to
do so. Do not attempt internal service or adjustment unless another
person, capable of rendering first aid and resuscitation, is present.
If you energize this instrument using an auto-transformer (for voltage
reduction), make sure that the common terminal is connected to the
earth terminal of the power source.
Whenever it is likely that the ground protection is impaired, you must
make the instrument inoperative and secure it against any unintended
operation.
Do not operate the instrument in the presence of flammable gases or
fumes. Operation of any electrical instrument in such an environment
constitutes a definite safety hazard.
Do not install substitute parts or perform any unauthorized modification
to the instrument.
8
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Capacitors inside the instrument may retain a charge even if the
instrument is disconnected from its source of supply.
Safety Symbols
Instruction Manual symbol: The instrument is marked with this symbol
when it is necessary for you to refer to the instruction manual in order to
protect against damage to the instrument.
Protected conductor symbol.
In the manuals:
WWWWAAAARRRRNNNNIIIINNNNGGGG
CCCCAAAAUUUUTTTTIIIIOOOONNNN Cautions call attention to a procedure, practice, or the like, which, if not
Warnings call attention to a procedure, practice, or the like,
which, if not correctly performed or adhered to, could result in
personal injury or loss of life. Do not proceed beyond a Warning
until the indicated conditions are fully understood and met.
correctly performed or adhered to, could result in damage to or
destruction of part or all of the equipment. Do not proceed beyond a
Caution until the indicated conditions are fully understood and met.
9
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Notice ......................................................................................... 4
About this book ......................................................................... 6
Output Modules ......................................................................... 7
Safety Information .................................................................... 8
Chapter 1
Chapter 2
General Programming Aspects
The GP-IB Interface Bus ......................................................... 14
Agilent 81110A Remote Control ............................................ 15
Programming Recommendations ............................................ 16
Common Command Summary ................................................. 18
Status Model ............................................................................ 19
Programming Reference
Agilent 81110A/81104A SCPI Command Summary ............... 26
Default Values, Standard Settings ......................................... 33
Programming the Instrument Trigger Modes ........................ 39
SCPI Instrument Command List ........................................... 43
xi
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Chapter 3
Specifications
Declaration of Conformity ................................................... 102
Agilent 81110A/81104A Specifications ............................... 103
General ................................................................................................. 103
Timing Specifications ......................................................................... 105
Level Specifications ............................................................................ 109
Clock Sources ...................................................................................... 111
External Input ...................................................................................... 113
Output Modes ...................................................................................... 114
Trigger Modes ...................................................................................... 115
Trigger and Strobe Specifications ..................................................... 116
Human Interface .................................................................................. 118
Memory ................................................................................................. 118
Remote Control ................................................................................... 119
Pulse Parameter Definitions ................................................ 120
xii
1General Programming
1
Aspects
This chapter provides general information on writing GP-IB/SCPI
programs for instruments like the Agilent 81104A and the Agilent 81110A.
Detailed information on programming the Agilent 81104A and
Agilent 81110A can be found in Chapter 2 Programming Reference on
page 25.
13
General Programming Aspects
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The GP-IB Interface Bus
The GP Interface Bus is the interface used for communication between a
controller and an external device, such as the Agilent 81110A. The GP-IB
conforms to IEEE standard 488-1987, ANSI standard MC 1.1, and IEC
recommendation 625-1.
If you are not familiar with the GP-IB, please refer to the following
books:
The Institute of Electrical and Electronic Engineers: IEEE Standard
488.1-1987, IEEE Standard Digital Interface for Programmable
Instrumentation.
The Institute of Electrical and Electronic Engineers: IEEE Standard
488.2-1987, IEEE Standard Codes, Formats, and Common
Commands for Use with IEEE Standard 488.1-1987.
14
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General Programming Aspects
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Agilent 81110A Remote Control
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(refer to the Quick Start Guide).
The default GP-IB address is 10.
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The Agilent 81110A has two modes of operation:
Local
The instrument is operated using the front panel keys.
Remote
After receiving the first command or query via the GP-IB, the
instrument is put into remote state. The front panel is locked.
To return to local operating mode, press SHIFT (LOCAL).
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15
General Programming Aspects
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Programming Recommendations
Here are some recommendations for programming the instrument:
Start programming from the default setting. The common command
for setting the default setting is:
*RST
Switch off the automatic update of the display to increase the
programming speed. The device command for switching off the
display is:
:DISPlay OFF
The SCPI standard defines a long and a short form of the commands.
For fast programming speed it is recommended to use the short
forms. The short forms of the commands are represented by upper
case letters. For example the short form of the command to set 100 ns
double pulse delay is:
:PULS:DOUB:DEL 100NS
To improve programming speed it is also allowed to skip optional
subsystem command parts. Optional subsystem command parts are
depicted in square brackets, e.g.: enable double pulse mode by
[SOURce]:PULSe:DOUBle[1|2][:STATe] ON|OFF. Sufficient to
use:
:PULS:DOUB ON # enables double pulse mode for
# output 1
The commands to set the timing and level parameters, except of
period/frequency, have to be specified for output 1 and output 2. If
there is no output specified the command will set the default output
1.
So, for setting a high level of 3 Volts for output 1 and output 2 the
commands are:
:VOLT:HIGH 3V # sets high level of 3 V at out 1
:VOLT1:HIGH 3V # sets high level of 3 V at out 1
:VOLT2:HIGH 3V # sets high level of 3 V at out 2
16
General Programming Aspects
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It is recommended to test the new setting which will be programmed
on the instrument by setting it up manually. Enable the outputs so
that the instruments error check system is on and possible parameter
conflicts are immediately displayed. When you have found the correct
setting, then use this to create the program. In the program it is
recommended to send the command for enabling outputs (for
example, :OUTPut1 ON) as the last command. With this procedure
it is possible to switch off the error check system
(:SYSTem:CHE Ck OFF) to increase programming speed. The error
check is enabled again by sending *RST.
*RST # set default settings
:DISP OFF # switch off display update
:SYST:CHEC OFF # switch off error check
... # other commands to set modes
... # and parameters
:OUTP1 ON # enable the output 1
Selftest of the instrument can be invoked by the common command
*TST
The Agilent 81110A offers auto calibration for the period (VFO), delay
and width circuitry by the device command :CALibration. It is
recommended to query whether the calibration is passed by sending
:CALibration?.
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If it is important to know whether the last command is completed
then send the common command
*OPC?
17
General Programming Aspects
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Common Command Summary
This table summarizes the IEEE 488.2 common commands supported by
the Agilent 81110A/81104A:
Command Parameter Description
*CLS Clear the status structure
*ESE <0255> Set the Standard Event Status register mask
*ESE? Read the state of the Standard Event Status enable register
*ESR? Read the state of the Standard Event Status event register
*IDN? Read the Instrument's Identification string
*LRN? Read the complete Instrument Setting
*OPC Set the Operation Complete bit when all pending actions
are complete
*OPC? Read the status of the Operation Complete bit
*OPT? Read the installed options
*RCL <09> Recall a complete Instrument Setting from memory
*RST
*SAV <19> Save the complete Instrument Setting to memory
*SRE <0255> Set the Service Request Enable Mask
*SRE? Read the Service Request Enable Mask
*STB? Read the Status Byte
*TRG Trigger
*TST? Execute instrument's self-test
*WAI Wait until all pending actions are complete
Reset the instrument to standard settings
18
Status Model
QUES
TIONABLE STATUS
Voltage warning
Current Warning
Timing Warning
Frequency Warning
Operation Complete
Query Error
Device Depend en t Er ro r
Execution Error
Command Error
Power On
0
1
2
3
4
5
6
7
8
9
15
OPERation Status
0
1
2
3
4
5
6
7
8
9
15
Standard Event Status
0
1
2
3
4
5
6
7
(NOT USED)
General Programming Aspects
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Status
Byte
0
1
2
3
MAV
4
5
SRQ
6
7
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The instrument has a status reporting system conforming to IEEE 488.2
and SCPI. The figure above shows the status groups available in the
instrument.
19
General Programming Aspects
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Each status group is made up of component registers, as shown in the
figure below.
Condition Register
Hardware
and Firmware
condition
Transition Filters
1
0
PTR NTR
1
0
Event Register
Latched
Enable
Register
OR
Summary Bit
Condition Register
A condition register contains the current status of the hardware and
firmware. It is continuously updated and is not latched or buffered. You
can only read condition registers. If there is no command to read the
condition register of a particular status group, then it is simply invisible
to you.
Transition Filters
Transition filters are used to detect changes of state in the condition
register and set the corresponding bit in the event register. You can set
transition filter bits to detect positive transitions (PTR), negative
transitions (NTR) or both. Transition filters are therefore read-write
registers. They are unaffected by *CLS.
Event Register
An event register latches transition events from the condition register as
specified by the transition filters or records status events. Querying
(reading) the event register clears it, as does the *CLS command. There is
no buffering, so while a bit is set, subsequent transition events are not
recorded. Event registers are read-only.
20
General Programming Aspects
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Enable Register
The enable register defines which bits in an event register are included in
the logical OR into the summary bit. The enable register is logically
ANDed with the event register and the resulting bits ORed into the
summary bit. Enable registers are read-write, and are not affected by
or querying.
*CLS
Although all status groups have all of these registers, not all status
groups actually use all of the registers. The following table summarizes
the registers used in the instrument status groups.
Registers in Group
Status Group
QUEStionable
OPERation1
Standard Event Status
Status Byte
1 Present, but not used. COND and EVEN always 0.
*ESR?
2 Use
3 Use
4 Use
5 Use
*ESE
*STB?
*SRE
to query.
to set,
to query
to set,
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*SRE?
to query
2
√
4
√
3
√
5
√
21
General Programming Aspects
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Status Byte
The status byte summarizes the information from all other status groups.
The summary bit for the status byte actually appears in bit 6 (RQS) of the
status byte. When RQS is set it generates an SRQ interrupt to the
controller indicating that at least one instrument on the bus requires
attention. You can read the status byte using a serial poll or *STB?
Bit Description
0 Unused, always 0
1 Unused, always 0
2 Unused, always 0
3 QUESTionable Status Summary Bit
4 MAVMessage AVailable in output buffer
5 Standard Event Status summary bit
6 RQS; ReQuest Service
7 OPERation Status summary Bit, unused
Standard Event Status Group
Bit Description
0 Operation Complete, set by *OPC
1Unused, always 0
2 Query Error
3 Device Dependent Error
4 Execution Error
5 Command Error
6Unused, always 0
7Power On
22
General Programming Aspects
OPERation Status Group
This Status Group is not used in the instrument.
Bit Description
0 Unused, always 0
1 Unused, always 0
2 Unused, always 0
3 Unused, always 0
4 Unused, always 0
5 Unused, always 0
6 Unused, always 0
7 Unused, always 0
8 Unused, always 0
9 Unused, always 0
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10 Unused, always 0
11 Unused, always 0
12 Unused, always 0
13 Unused, always 0
14 Unused, always 0
15 Always 0
23
General Programming Aspects
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QUEStionable Status Group
Bit QUEStionable
0 Voltage warning
1 Current warning
2 Time warning
3 Unused, always 0
4 Unused, always 0
5 Frequency warning
6 Unused, always 0
7 Unused, always 0
8 Unused, always 0
9 Unused, always 0
10 Unused, always 0
11 Unused, always 0
12 Unused, always
13 Unused, always 0
14 Unused, always 0
15 Always 0
The QUEStionable Status group is used to report warning conditions
amongst the voltage, current, pulse timing and frequency parameters.
Warnings occur when a parameter, although not outside its maximum
limits, could be causing an invalid signal at the output because of the
actual settings and uncertainties of related parameters.
24
2
2Programming Reference
This chapter provides reference information on the following topics:
Agilent 81110A/81104A SCPI Command Summary on page 26
Default Values, Standard Settings on page 33
Programming the Instrument Trigger Modes on page 39
SCPI Instrument Command List on page 43
For general programming information, please refer to Chapter 1
General Programming Aspects on page 13.
25
Programming Reference
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Agilent 81110A/81104A SCPI Command Summary
Command Parameter Description
see
page
:ARM
[:SEQuence[1]|:STARt]
[:LAYer[1]]
:EWIDth
[:STATe] ON|OFF|1|0
:FREQuency <value>
:IMPedance <value>
:LEVel <value>
:PERiod <value>
:SENSe EDGE|LE Vel
:SLOPe POS|NEG |EITH
:SOURce IMM|INT[1]|INT2|
EXT[1]|MAN
:CHANnel
:MATH OFF|PLUS
:CALibration[:ALL]
(Trigger mode and source)
Set/read External Width mode
Set/read trigger frequency, when PLL
(INT2) used as source
Set/read impedance at EXT INPUT
Set/read threshold level at EXT INPUT
Set/read trigger period,when PLL (INT2)
used as source
Set/read trigger on edge or gate on level
Set/read trigger slope at EXT INPUT
Set/read trigger source
(VCO | PLL | EXT INPUT | MAN key)
Set/read addition of channels 1 and 2 at
output 1
Set/read calibration of period (VFO), delay and width circuitries
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47
48
48
49
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Command Parameter Description
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:DIGital
[:STIMulus]
:PATTern
:DATA[1|2|3] [<start>,]<data>
:PRBS[1|2|3] [<n>,]<length>
:PRESet[1|2|3] [<n>,]<length>
[:STATe] OFF|ON|0|1
:UPDate OFF|ON|ONCE
:SIGNal[1|2]
:FORMat RZ|NRZ
:DISPlay
[:WINDow]
[:STATe] ON|OFF|1|0
:MMEMory
:CATalog? [A:]
:CDIRectory [<name>]
:COPY <source>[,A:],
<dest>[,A:]
:DELete <name>[,A:]
:INITialize [A:[DOS]]
:LOAD
:STATe <n>,<name>
:STORe
:STATe <n>,<name>
Set/read pattern data [from Bit<start>]
Set PRBS 2n1 data (n = 7 to 12)
Set preset pattern with frequency
÷
CLOCK
Switch Pattern mode on or off
Update the hardware with pattern data
Set/read data format of output channel
Set/read frontpanel display state
Read directory of memory card
Change directory on memory card
Copy a file on memory card
Delete a file from memory card
Initialize memory card to DOS format
Load file from memory card to memory n
Store memory n to memory card
n (n = 2 to 16384)
50
52
53
54
54
55
55
55
56
57
57
57
58
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27
Programming Reference
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Command Parameter Description
:OUTPut[1|2]
[:NORMal]
[:STATe] OFF|ON|1|0
:COMPlement
[:STATe] OFF|ON|1|0
:IMPedance
[:INTernal] <value>
:EXTernal <value>
:POLarity NORM|INV
[:SOURce]
:CURRent[1|2]
[:LEVel]
[:IMMediate]
[:AMPLitude] <value>
:OFFSet <value>
:HIGH <value>
:LOW <value>
:LIMit
[:HIGH] <value>
:LOW <value>
:STATe ON|OFF| 1|0
:FREQency
[:CW|:FIXed] <value>
:AUTO ONCE
Set/read normal output state
Set/read complement output state
Set/read internal source impedance of
output
Set/read expected external load impedance at output
Set/read output polarity
Set/read channel amplitude current
Set/read channel offset current
Set/read channel high-level current
Set/read channel low-level current
Set/read maximum current limits
Set/read minimum current limits
Enable/Disable the current limits
Set/read frequency of pulses
Measure frequency at CLK IN
see
page
59
59
59
60
60
61
62
63
64
65
65
66
66
67
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Command Parameter Description
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[:SOURce]
:HOLD[1|2] VOLT|CURR
:PHASe[1|2]
[:ADJust] <value>
:PULSe
:DCYCle[1|2] <value>
:DELay[1|2] <value>
:HOLD TIME|PRATio
:UNIT S|SEC|PCT|DEG|RAD
:DOUBle[1|2]
[:STATe] OFF|ON
:DELay <value>
:HOLD TIME|PRATio
:UNIT S|SEC|PCT
:HOLD[1|2] WIDTh|DCYCle|TDELay
:PERiod <value>
:AUTO ONCE
:TDELay[1|2] <value>
:TRANsition[1|2]
:HOLD TIME|WRATio
:UNIT S|SEC|PCT
[:LEADing] <value>
:TRAiling <value>
:AUTO OFF|ON|ONCE
(continued)
Switch between VOLtage and CURRent
command subtrees
Set/read channel phase
Set/read channel dutycycle
Set/read channel delay (to leading edge)
Hold absolute delay or delay as period
fixed with varying frequency
Set/read delay units
Enable/disable double pulses per period
Set/read delay between double pulses
Hold absolute delay or delay as period
fixed with varying frequency
Set/read delay units
Hold Width|Dutycycle|Trailing edge delay fixed with varying frequency
Set/read pulse period
Measure pulse period at CLK IN
Set/read trailing edge delay
Hold absolute transitions|transitions as
width ratio fixed with varying width
Set/read transition-time units
Set/read leading-edge transition
Set/read trailing-edge transition
Couple trailing edge to leading edge
68
68
69
70
71
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Programming Reference
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Command Parameter Description
see
page
[:SOURce]
:TRIGger[1|2]
:VOLTage TTL|ECL
:WIDTh[1|2] <value>
:ROSCillator
:SOURce INTernal|EXTernal
:EXTernal
:FREQuency <value>
:VOLTage[1|2]
[:LEVel]
[:IMMediate]
[:AMPlitude] <value>
:OFFset <value>
:HIGH <value>
:LOW <value>
:LIMit
[:HIGH] <value>
:LOW <value>
:STATe ON|OFF| 1|0
(continued)
Set/read TRIGGER|STROBE OUTput levels
Set/read channel pulse width
Set/read PLL reference source
Set/read frequency of external PLL reference
Set/read channel amplitude voltage
Set/read channel offset voltage
Set/read channel high-level voltage
Set/read channel low-level voltage
Set/read maximum voltage limit
Set/read minimum voltage limit
Enable|Disable the voltage limits
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