Tektronix BERTScope Programmer
xx
Tektronix
ZZZ
BitAlyzer/BERTScope
Remote Control Guide
www.tektronix.com
P077069603*
*
077-0696-03
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P.O . B o x 5 0 0
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World w ide, visi t www.tektronix.com to find contacts in your area.
Table of Contents
Preface ............................................................................................................... v
Theory of operation............. ................................ ................................ ............... v
Getting started........... . . . . . . . . . ............. . . . . . . . . . .............. . . . . . . . . .............. . . . . . . . . ............. . . . . 1
Remote control overview ..................................................................................... 1
Set up the instrument for remote control operation ........................... ............................. 2
Command description ......................................................................................... 2
Command syntax ............. .................................. ................................ ............... 3
Features .......... .................................. ................................ ............................. 3
Operations ...................................................................................................... 4
Parameters ...................................................................................................... 4
Command status ............................................................................................... 5
Command error messages and codes . .................................. ................................ ..... 5
Communications timeouts ........... ................................ ................................ ......... 6
Command listing.................................................................................................... 7
Generator ................. ................................ ................................ .......................... 11
Generator Data Generator ................ ................................ ................................ ........ 17
Generator Pattern Start............................................................................................ 19
Generator Spread Spectrum Clock............................................................................... 20
Generator Clock Input ............................................................................................ 22
Generator Clock Output Positive .. . . . . . . . . ............ . . . . . . . . ............ . . . . . . . . .............. . . . . . . . ......... 24
Generator Clock Output Negative ............... ................................ ................................ 27
Generator Clock Output Pos/Neg................................................................................ 30
Generator Data Output Positive . . ........... . . . . . . . . . ........... . . . . . . . . . ........... . . . . . . . . . ............ . . . . . . . . 31
Generator Data Output Negative................. ................................ ................................ 34
Generator Data Output Pos/Neg ....... ................................ ................................ .......... 36
Generator Trigger.................................. .................................. .............................. 37
Generator Error Inject............................................................................................. 38
Generator Stress Module (GSM) - Stressed Eye............................................................... 41
GSM - Stressed Eye Configure/Enable.......................................................................... 41
GSM - Stressed Eye Setup........................................................................................ 42
Detector............................................................................................................. 51
Detector Error Detector ....... .................................. ................................ .................. 54
Detector Start Detect .............................................................................................. 58
Detector Clock Input .............................................................................................. 59
Detector Data Input...................................... ................................ .......................... 61
Detector Blank Input .............................................................................................. 63
Detector Trigger ... ................................ ................................ ................................ 64
Detector Results ................................................................................................... 65
Detector Symbol Filtering . . . . ............ . . . . . . ........... . . . . . . . ............ . . . . . . . .......... . . . . . . . ........... . 67
BERTScope Remote Control Guide i
Table of Contents
Detector Conve
Detector Auto Align Results ..................................................................................... 68
Detector Optical Mode.. ................................ .................................. ........................ 69
Stress Combiner Option........................... .................................. .............................. 71
Stress Combiner command summary ........................................................................... 72
Stress Combiner commands ........................ ................................ .............................. 74
Clock Recovery Option. .................................. ................................ ........................ 79
Clock recovery command summary............................................................................. 81
CRService : Clock Recovery Service ........... .................................. .............................. 84
CRControl : Clock Recovery Control....................... .................................. .................. 85
Clock Recovery Loop Response ............... ................................ ................................ .. 94
Clock Recovery SSC Waveform ................................................................................. 96
Clock Recovery Jitter Spectrum ... . . . . . . . . ................ . . . . . . . . ................ . . . . . . . . . . .............. . . . . . . 99
Clock Recovery Miscellaneous ........ ................................ ................................ ........ 103
Clock Recovery: Sample Program ............................................................................ 106
Digital Pre-Emphasis Processor (DPP) Option..................... ................................ .......... 113
DPP command summary........................................................................................ 114
DPP remote control commands ................ ................................ ................................ 116
Lightwave Test Set (LTS) option .............................................................................. 131
LTS remote control setup ....................... ................................ ................................ 132
LTS command summary ........................................................................................ 135
LTS Remote Control Commands .............................................................................. 136
Analysis Engine........................ ................................ ................................ .......... 145
Basic BER .................... .................................. ................................ .................. 149
Block Errors...................................................................................................... 150
Burst Length ..... ................................ .................................. .............................. 153
Correlation........................................................................................................ 155
Error Free Interval ............................. ................................ .................................. 158
Error Map......................................................................................................... 160
FEC Emulation..... .................................. ................................ ............................ 163
Pattern Sensitivity . . . .............. . . . . . . . . . ............... . . . . . . . . ................ . . . . . . . . ................ . . . . . . 169
Strip Chart .................. ................................ ................................ ...................... 172
Physical Layer Test.................................... .................................. ........................ 175
Eye Diagram ..................................................................................................... 176
Eye: CleanEye ................................................................................................... 187
Eye: Enable Eye Measurement Overlay .............. ................................ ........................ 196
Eye: Data Collecting ............................................................................................ 206
Eye: Single Value Waveform............... ................................ .................................. .. 207
Eye: Optical Mode .... .................................. ................................ ........................ 208
Eye: Read Eye Measurement .. ................................ .................................. .............. 212
BER Contour ............................. .................................. ................................ ...... 215
nience............................................................................................. 68
ii BERTScope Remote Control Guide
Table of Contents
BER Contour: Op
Jitter Map . . . . . .............. . . . . . . . ............. . . . . . . . ............. . . . . . . . . ............ . . . . . . . . ........... . . . . . . . 222
Jitter Peak. .............. . . . . . . .............. . . . . . . . ............. . . . . . . . ............. . . . . . . . . ............ . . . . . . . . .. 234
Jitter Tolerance..... . . . . . . . ............. . . . . . . ............ . . . . . . . . ............ . . . . . . . ............. . . . . . . .......... 242
Mask Test......................................................................................................... 247
Q-Factor .......... ................................ .................................. .............................. 254
Mainframe ............................ .................................. ................................ .......... 2
System View ..................................................................................................... 269
RAM Capture ........ .................................. ................................ .......................... 271
System Event Log ............................................................................................... 273
Configuration....................... .................................. ................................ ............ 275
Status Queries.................................................................................................... 277
Common C
File Transfer...................................... .................................. .............................. 283
Appendix A: Sample Remote Programming ................................................................. 287
Connect the cables to the instrument ......................... .................................. .......... 287
Send commands to the instrument ........................................................................ 287
Run a test and read back the measurements ........... .................................. ................ 291
x
Inde
tical Mode................................................................................... 221
61
ommands ................................ ................................ ............................ 281
BERTScope Remote Control Guide iii
Table of Contents
iv BERTScope Remote Control Guide
Preface
Theory of operation
This document contains a comprehensive listing or remote control commands
for the Tektronix BERTScope family of products. It includes commands for the
different pl
for each of those commands.
The remote control features enable operation of instrument processes remotely
via an IEEE-488 communications connection. Remote control is implemented
using a text-oriented command protocol that enable you to set and query system
parameters, and to operate the analyzer in different modes, including live error
analysis and offline playback of previously recorded error data.
The text-oriented commands follow a basic three-part structure, consisting of one
word identifying the major feature being addressed, another word identifying
aspeci
The analyzer receives and operates on each command immediately. Command
execution sets a status variable that may be queried by the user to determine if
the previous command was successful. Alternatively, a mode can be selected in
which these statuses are automatically returned after each command execution.
atforms. Restrictions and separate parameters or ranges are noted
fic operation or parameter within that feature, and optional parameters.
This document describes how to interface with the analyzer using the IEEE-488
connection. The Analyzer is an IEEE-488 bus peripheral only; it is not an
IEEE-488 bus controller and cannot produce SRQ signals. The IEEE-488 Setup
el. In the System View, touch the Tools tab, then the Remote button, then
pan
IEEE Address. Enter the unique address in the GPIB Address field.
r more technical assistance in programming your remote control applications,
Fo
please contact your local Tektronix representative.
BERTScope Remote Control Guide v
Preface
vi BERTScope Remote Control Guide
Getting started
Remote contro
loverview
The BERTScope analyzer and any connected BERTScope instruments can
be controlled remotely via either an IEEE-488 or a TCP/IP communications
connection
or a host PC..
The remote
computer via either an IEEE-488 or TCP/IP connection. It then routes the
commands to one or more BERTScope instruments, connected to the BERTScope
analyzer or host PC via USB.
If the local host is a BERTScope, then the BERTScope software gets a chance
to handle the command first. Any commands the BERTScope software doesn’t
understand are sent to the BERTScope instruemnt software, which then controls
the BERTScope instruments.
When a BERTScope instrument is connected to a BERTScope, you can inter-mix
BERTScope and BERTScope instrument commands in the same script, program,
or int
are routed to the remote control software directly. In this case, using the
BERTScope-specific commands will result in an error.
For most applications, a single BERTScope instrument is connected to a
BERTScope or host PC. In this case, the BERTScope instrument is automatically
detected and connected when the remote control software is started, and
automatically disconnected when the remote control software is stopped. There
is no need in this case to use the OPEN or CLOSE commands described later in
is section.
th
. The remote control software runs on either a BERTScope anaylyzer,
control software accepts text-oriented commands from a remote
eractive session. If the host is just an ordinary PC, then the commands
If more than one BERTScope instrument is connected (such as a DPP125C and
ne or more Clock Recovery instruments) to the BERTScope or host computer,
o
the remote control software will not connect automatically. In this case, the
Remote computer must issue a NAMES? query to discover the IDs of the
connected BERTScope instruments, and OPEN the one desired before issuing
control commands. If the Remote computer needs to control multiple BERTScope
instruments, it would OPEN, control, then CLOSE one, then OPEN, control, and
CLOSE another. The device that is OPEN is referred to as the current device
throughout this document.
Remote control is implemented using a text-oriented command protocol described
in the following pages of this document. These commands enable you to set
and query the system parameters of the BERTScope instruments, and to retrieve
measurements made by the instrument.
BERTScope Remote Control Guide 1
Getting started
Set up the inst
rument for remote control operation
Remote setup is a ccessed from the BERTScope Analyzer System View.
1. In the System view, under the Tools tab Utilities heading, click the Remote
button to access the configuration panel.
2. Before beginning a remote control session, it is necessary to start the Remote
Client application, RemoteClient.exe, on the host computer.
If the host is a BERTScope, click the Remote button from the System View
To ols page. If the host computer is a normal PC, then just execute the
RemoteClient.exe, file.
3. If you are using GPIB to control the BERTScope, enable the IEEE Address
button.
If the button is not enabled, click the Disconnect button; it might take a few
seconds to enable the IEEE Address button.
4. Click the IEEE Address button and enter the required information into the
NI-488.2 Settings dialog box.
Command description
Remote control communications are exchanged as ASCII strings over a LAN
telnet (TCP port 23) between the host computer and the analyzer. Select a
communications port to be used for access to the instrument's remote control
operations. If the port is set to NONE, then remote control is disabled.
The input values of commands are checked against the same ranges as the user
interface. If an input is received that is outside of this legal range, the input will
be clipped and recorded in the status queue.
It is recommended that you request the status of a command by sending
SYStemERRor? after each command. Besides telling you what has happened
with the command, this will also synchronize command transmission and
handling.
2 BERTScope Remote Control Guide
Getting started
Command synta
x
Remote Control Command Lines are defined as ASCII text strings ending with
‘\r’ or ‘\n’.
The commands follow a basic three-part structure, consisting of one word
identifying the feature of the BERTScope instrument being addressed, another
word identi
The feature and operation are separated by a colon, and the operation and
parameter (if any), are separated by a space. The operation can be Double,
Integer, or Boolean numbers; a file path name; a special word; or a data type. For
a Boolean data type, the input can be ON, OFF, 1, or 0. The returned response
will be either 1 for true or 0 for false. A question-mark character (?) is added at
the end o
FEATURE:OPERATION PARAMETER
Commands and parameters are generally case-insensitive, with the notable
exception of those requiring a case-sensitive parameter for the Standard names.
Most commands have both a “long version” and “short version,” indicated by
capitalized versus lowercase letters. For example:
typed
are required; the lowercase letters are optional – commands are not case-sensitive.
The s
for example). You might want to use the long form in scripts or programs, to
increase code clarity.
fying a specific operation within that feature, and optional parameters.
f a command, without a space, to create a query.
GENerator:PATTern? can be
out exactly as shown, or as
hort form is convenient during interactive control (using a telnet session,
GEN:PATT? The capital letters and the colon (:)
Features
When command setup data uses a string as a parameter (a filename or path name,
for instance), enclose the string in double-quotes (“string”).
For every command processed, an error code will be returned. If the command
has a question mark (a query), the setup information is also returned.
The BERTScope remote control commands are divided into feature groups. The
number of features per each group depend on the BERTScope product.
In the first group are commands that handle device discovery and connection. You
can use these commands anytime, even if a current device has not been selected
yet (with the OPEN command). The NAMES, OPEN, and CLOSE commands are
allpartofthisgroup.
A second group consists of commands for controlling and monitoring a particular
BERTScope instruments. The current device must have been specified (using the
OPEN command) before to using any commands in this group.
BERTScope Remote Control Guide 3
Getting started
Operations
Read-only properties
Read-write properties
In addition to t
to control the host computer display (VIEW, PTFILE, GUILOCKOUT), the
run state (RSTATE, RDURATION), and the overall program configuration
(SCONFIGURATION, RCONFIGURATION, ISSTATUS, RSSTATUS). These
commands primarily implement the functionality provided by the GUI Console
buttons.
Queryareadablepropertybyappendingaquestionmarktoit(withnospace
between the command and the question mark). For example:
CRS:OPEN?
returns the device name of the currently connected BERTScope CR. In most
cases, the returned values are all capitalized.
Query a read-write property by appending a question mark after it.
Set a read-write property by adding an appropriate parameter. For example:
DPP:OPEN “DPP_1234”
selects the BERTScope DPP with the device name DPP_1234 as the current
device, while
he various feature groups, several miscellaneous features exist
Write-only operation
Parameters
DPP:OPEN?
returns name of the device previously OPENed.
Question marks are illegal for write-only operation, and parameters may or may
not be required, depending upon the particular operation. For example:
DPP:CLOSE
requires no parameters, but
DPP:RCONFIGDISK “D:\BitAlyzer\Configurations\mycfg.DPP”
requires the complete pathname of the BERTScope DPP configuration file.
A parameter can be a double or integer number, Boolean (0 or 1), an enumerated
data type, or a string.
When a command uses a string as a parameter, the string is enclosed in double
quotes (
double quotes.
“string”). Filenames always require the absolute path, enclosed within
4 BERTScope Remote Control Guide
Getting started
Command status
Parameters are
generally case-insensitive, with the notable exception of
case-sensitive Standard names. For example:
CRC:STANDARD “123abc”
and
CRC:DELETESTANDARD “123ABC”
are specifying different user-defined clock recovery standards.
The BERTScope instrument receives and operates on each command immediately.
The input values of commands are checked. If an input is received that is outside
of the legal range, the input will be clipped and recorded in the status queue.
Command execution sets a status variable that can be queried by the user to
determine if the previous command was successful.
Request the status of a command by sending:
SYSTEM:ERROR? or SYST:ERR?
This command retrieves items listed in the error status queue, in the format:
Command
Error messages
< n, “event/string” >
The status queue is first in, first out. It can contain up t o 100 error messages. If the
status queue overflows, the last error/event in the queue is replaced with Error
-350, “Queue overflow”. When all errors/events have been read from the
queue, further error/event queries will return
To clear the status queue all at once, send:
*CLS
error messages and codes
The following error messages might be returned:
"TOO MANY PARAMETERS"
"UNRECOGNIZED COMMA
"WRONG PARAMETER TYPE"
"TOO LITTLE PARAMETERS"
"WRONG PARAMETER FORMAT"
"WRONG PARAMETER NUMBER"
0, “NO ERROR”.
ND"
"WRONG ACTION-ONLY"
BERTScope Remote Control Guide 5
Getting started
Error codes
The following error codes might be returned:
0 "NO ERROR"
-350 "Queue Overflow"
-10 File transfer error
-20 System
-30 Command error, see list of error messages
-40 No software option
Communications timeouts
Most commands issued to the BERTSope/BitAlyzer are processed quickly and
return within immediately. However a handful of commands might require
considerable processing and take longer, including the following:
"WRONG QUERY-O
“REQUESTED <QUERY PARAMETER> IS NOT SUPPORTED ON THE
PLATFORM”
error or event
NLY"
Detector delay calibration — 8 seconds (approximately)
Generator delay calibration — 7 s econds
Detector auto align — 5 seconds
rator data signal enabling (BERTScope only) — 7 seconds
Gene
Run state enable (Physical layer tests that perform initial auto-align) —
conds
6se
As a result, programming the communications architecture with a two-second
meout for most command, and a 10-second timeout for the above-listed
ti
commands is one approach. Another approach is to set all communication
timeouts to be 10 seconds. Of course, commands that don’t require this much time
will not be affected by the longer timeout. This ensures that all commands can
complete without triggering communications timeouts.
6 BERTScope Remote Control Guide
Command listing
Generator (See page 11, Generator.)
Data Generator (See page 17,
Generator Data Generator.)
Pattern Start (See page 19, Generator
Pattern Start.)
Spread Spectrum Clock (See page 20,
Generator Spread Spectrum Clock.)
Clock Input (See page 22, Generator
Clock Input.)
Clock Output + (See page 24,
Generator Clock Output Positive.)
Clock Output – (See page 27,
Generator Clock Output Negative.)
Generator Stress Module (GSM) – Stressed Eye (See page 41, Generator Stress Module
(GSM) - Stressed Eye.)
GSM Configure/Enable (See page 41,
GSM - Stressed Eye Configure/Enable.)
Detector (See page 51, Detector.)
Error D etector (See page 54, Detector
Error Detector.)
Start Detect (See page 58, Detector
Start Detect.)
Clock Input (See page 59, Detector
Clock Input.)
Data Input (See page 61, Detector Data
Input.)
Blank Input (See page 63, Detector
Blank Input.)
Symbol Filtering (See page 67,
Detector Symbol Filtering.)
Stress Combiner (See page 71, Stress Combiner Option.)
Stress Combiner command summary
(See page 72, Stress Combiner
command summary.)
Clock Recovery (See page 79, Clock Recovery Option.)
CR Service (See page 84, CRService :
Clock Recovery Service.)
CR Control (See page 85, CRControl :
Clock Recovery Control.)
CR Loop Response (See page 94,
Clock Recovery Loop Response.)
Clock Output +/– (See page 30, Generator
Clock Output Pos/Neg.)
Data Output + (See page 31, Generator Data
Output Positive.)
Data Output –(See page 34, Generator Data
Output Negative.)
Data Output +/– (See page 36, Generator
Data Output Pos/Neg.)
Trigger (See page 37, Generator Trigger.)
Error Inject(See page 38, Generator Error
Inject.)
GSM Stress Setup (See page 42, GSM -
Stressed Eye Setup.)
Trigger (See page 64, Detector Trigger.)
Results (See page 65, Detector Results.)
Auto Align Results (See page 68, Detector
Auto Align Results.)
Optical Mode (See page 69, Detector Optical
Mode.)
Convenience (See page 68, Detector
Convenience.)
Stress Combiner commands (See page 74,
Stress Combiner commands.)
CR Jitter Spectrum (See page 99, Clock
Recovery Jitter Spectrum.)
CR Miscellaneous (See page 103, Clock
Recovery Miscellaneous.)
CR Sample Program (See page 106, Clock
Recovery: Sample Program.)
BERTScope Remote Control Guide 7
Command listing
CR SSC Waveform (See page 96,
Clock Recovery SSC Waveform.)
Digital Pre-Emphasis Processor (DPP) (S ee page 113, Digital Pre-Emphasis Processor
(DPP) Option
DPP command s
page 114, DPP command summary.)
Lightwave Test Set LTS option (See page 131, Lightwave Test Set (LTS) option.)
LTS remote control setup (See
page 132, LTS remote control setup.)
RC LTS Remote Control Commands
(See page
Commands.)
Analysis Engine (See page 145, Analysis Engine.)
Basic BER (See page 149, Basic BER.) 2D Error Map (See page 160, Error Map.)
Block Errors (See page 150, Block
Errors.)
Burst Length (See page 153, Burst
Lengt
Corr
Correlation.)
Error Free Interval (See page 158,
Error Free Interval.)
Physical Layer Test (See page 175, Physical Layer Test.)
Eye Diagram (See page 176, Eye
Di
BER Contour (See page 215, BER Contour.)
Mainframe (See page 261, Mainframe.)
System (See page 269, System View.)
System Event Log (See page 273, System Event Log.)
Configuration (See page 275, Configuration.)
.)
ummary (See
136, LTS Remote Control
h.)
elation (See page 155,
agram.)
e: CleanEye (See page 187,
Ey
Eye: CleanEye.)
Eye: Single Value Waveform (See
page 207, Eye: Single Value
Waveform.)
Eye: Data Collecting (See
page 206, Eye: Data Collecting.)
Eye: Optical Mode (See page 208,
Eye: Optical Mode.)
Eye: Read Eye Measurement
(See page 212, Eye: Read Eye
Measurement.)
DPP Interfac
control commands.)
RC LTS command summary (See page 135,
LTS command summary.)
FEC Emulation (See page 163, FEC
Emulation.)
Pattern Sensitivity (See page 169, Pattern
Sensi
p Chart (See page 172, Strip Chart.)
Stri
sk Test (See page 247, Mask Test.)
Ma
Jitter Map (See page 222, Jitter Map.)
Jitter Peak (See page 234, Jitter Peak.)
Jitter Tolerance (See page 242, Jitter
Tolerance.)
Q-Factor (See page 254, Q-Factor.)
e(See page 116, DPP remote
tivity.)
Contour Optical Mode (See page 221,
R Contour: Optical Mode.)
BE
8 BERTScope Remote Control Guide
Status Queries (See page 277, Status Queries.)
Common Commands (See page 281, Common Commands .)
Command listing
BERTScope Remote Control Guide 9
Command listing
10 BERTScope Remote Control Guide
Generator
Complete command list (See page 7, Command listing.)
DELAY:GENR e c a l ?
Retrieve the information that indicates whether Generator delay needs
recalibration. Query only. Note: Since monitoring for these calibrations is
suspended while Physical Layer tests are running, using this command under
those circumstances may not return an accurate result.
< 1 > Needs delay recalibration.Returns:
< 0 > Does not need delay recalibration.
GENerato
r:CREFerence <EXTernal | INTernal>
GENerator:CREFerence?
BERTSco
Params:
Returns:
pe Analyzer only. Set or retrieve the Generator input clock reference.
<EXTernal>
<INTernal>
< EXTERNAL | INTERNAL >
External clock reference
Internal clock reference
GENerator:CSELect <INTernal | EXTernal>
rator:CSELect?
GENe
Set or retrieve the clock used by the Generator.
Params:
Returns:
<INTernal>
<EXTernal>
< INTERNAL | EXTERNAL >
Generator uses the internal clock synthesizer
Generator uses the external clock
BERTScope Remote Control Guide 11
Generator
GENerator:CUT
OFFKHZ?
Retrieve the frequency at which the Generator switches to the DDR mode.
Applies to BER
TScope BSA175C. Query only.
GENerator:DDEFs <numeric>
GENerator:
DDEFs?
Set or retrieve the Generator data delay in femto-seconds.
Params: <numeric>
Returns: <numeric>
Set Generator data delay in fs.
GENerator:DDELay <numeric>
GENerator:DDELay?
Set or retrieve the Generator data delay in picoseconds.
Params: <numeric>
Returns: <numeric>
or data delay.
Generat
BitAlyzer: Input out of range will be clipped and recorded
in the status queue.
When th
1,500 MHz], Data Delay is within range [0 to 5,000 ps].
BERTScope Analyzer: Input out of range will be clipped
and rec
When the Analyzer is operating within range [1,100 to
12,500 MHz], Data Delay is within range [0 to 3,000 ps].
e BitAlyzer is operating w ithin range [982 to
orded in the status queue.
GENerator:DINVert <bool>
GENerator:DINVert?
Set or retrieve data inversion state for the Generator.
Params: <bool>
Returns:
Nerator:DRATe?
GE
< 1 > Data inversion is on
<0>
On=1,Off=0
Data inversion is off
Retrieve the Generator data rate. Query only.
Returns: <numeric>
Generator data rate in bits/sec. “0” means “No Clock.”
12 BERTScope Remote Control Guide
Generator
GENerator:EXT
Pagmode <SWITCHRISE | SWITCHFALL | AORBRISE |
AORBFALL | OFF>
GENerator:EXTPagmode?
Set or retrieve the Generator External Page Select mode.
Params:
Returns:
<SWITCHRISE> Switch momentarily to the other page on rising
edge
<SWITCHFALL> Switch momentarily to the other page on falling
edge
<AORBRISE> Switch to the other page on a rising edge
<AORBFALL> Switch to the other page on a falling edge
<OFF> External page select is off
< SWITCHRISE | SWITCHFALL | AORBRISE | AORBFALL | OFF >
GENerator:FULLRATEclock <bool>
GENerator:FULLRATEclock?
Set or retrieve Full Rate Clock property of the Generator.
Retur
ns:
<1>
<0>
Generator is in Full Rate Clock mode
Generator is in Half Rate Clock mode
GENerator:ICLock <numeric>
GENerator:ICLock?
Set or retrieve the internal clock synthesizer frequency of the Generator. May
require some delay to complete.
rams:
Pa
Returns: <numeric>
umeric>
<n
Generator internal clock synthesizer frequency in H z
BA1500: Range, 1 to 1.5 MHz
1600: Range, 1 to 1.6 MHz
BA
BSA85C: Range, 0.1 to 8.5 GHz
BSA125C: Range, 0.1 to 12.5 GHz
SA175C: Range, 0.5 to 17.5 GHz
B
BSA260C: Range, 1 to 26.0 GHz
BSA286CL: Range, 1 to 28.6 GHz
nput out of range will be clipped and recorded in the
I
status queue.
BERTScope Remote Control Guide 13
Generator
GENerator:OFf
setfreq <numeric>
GENerator:OFfsetfreq?
Set or retriev
Params: <numeric>
Returns: <numeric>
e Generator’s Frequency Offset in PPM.
Generator’s Frequency Offset in PPM. Range [-500 to
+500]
GENerator:PCALibration
Perform Generator delay calibration. Action only. May require som e delay
to complete.
GENerator:PMMOD:DEViation <numeric>
GENerator:PMMOD:DEViation?
Set or retrieve Phase Modulation Deviation in UI. Range is from 0 to the value
dependent on PM.
Frequency:
>40 kHz to 160 kHz
40 kHz
10 Hz to <40 kHz
where:
n=1for6GHz=clk=12.5GHz
n=2for3GHz=clk<6GHz
n = 4 for 1.5 GHz = clk < 3 GHz
n = 8 for 750 MHz = clk < 1.5 GHz
n = 16 for 375 MHz = clk < 750 MHz
n = 32 for 187.5 MHz = clk < 375 MHz
n = 64 for 100 MHz = clk < 187.5 MHz
Decreases 30 dB/decade to 37.5/ n UI at 165 kHz
300/ n UI
Increases at 20 dB/decade to 6000/ n UI at 2 kHz (fixed
6000/ n UI from 2 kHz to 10 Hz)
Params: <numeric> Range: 0 to the upper limit as dependent on the PM Frequency
(see GEN:PMMOD:FREQ)
Returns: <numeric>
GENerator:PMMOD:ENABle <bool>
GENerator:PMMOD:ENABle?
Enable or disable Phase Modulation.
Params: <bool>
Returns:
<1>
<0>
n=1,Off=0
O
Generator Phase Modulation is enabled
Generator Phase Modulation is disabled
14 BERTScope Remote Control Guide
Generator
GENerator:PMM
OD:FREQuency <numeric>
GENerator:PMMOD:FREQuency?
Set or retriev
Params: <numeric> Range [10 Hz to 160 kHz]
Returns: <numeric>
e Phase Modulation Frequency.
GENerator:REFIN:ENABLE <bool>
GENerator:REFIN:ENABLE?
Enable or disable the Generator Reference In.
Returns:
GENerato
<1>
<0>
Generator Reference In is enabled
Generator Reference In is disabled
r:REFIN:FREQuency <numeric>
GENerator:REFIN:FREQuency?
Set or re
Params: <numeric>
Retu
trieve the Generator Reference In Frequency in Hz.
Generator Reference In frequency in Hz.
le values are:
Possib
10,000,000
100,000,000
50,000
106,2
156,250,000
133,330,000
70,000
166,6
200,000,000
rns:
<num
eric>
GENerator:REFOUT:ENABLE <bool>
GENerator:REFOUT:ENABLE?
Enable or disable the Generator Reference Out.
Params: <bool>
Returns:
<1>
<0>
On=1,Off=0
Generator Reference Out is enabled
Generator Reference Out is disabled
BERTScope Remote Control Guide 15
Generator
GENerator:REF
OUT:FREQuency <numeric>
GENerator:REFOUT:FREQuency?
Set or retriev
Params: <numeric>
Returns: <numeric>
e the Generator Reference Out Frequency in Hz.
Generator Reference Out frequency in Hz.
Possible val
10,000,000
100,000,000
106,250,00
156,250,000
133,330,000
166,670,0
200,000,000
GENerator:SYNFM:PRESent?
Retrieve
Params: <bool>
Returns:
whether SynFM module is present. Query only.
On=1,Off=0
<1>
<0>
SynFM module is present
SynFM module is not present
ues are:
0
00
Complete command list (See page 7, Command listing.)
16 BERTScope Remote Control Guide
Generator Data Generator
Generator Dat
a Generator
Complete com
GENerator:ISERror
Inject a single error. Action only.
GENerator:LUPFilename?
Retrieve user pattern file that has been loaded to the Generator. Query only.
Returns:
GENerator:PATTern <PN7 | PN11 | PN15 | PN20 | PN23 | PN31 | USTart
| UCYCle | ZERO | PASSthrough>
GENerator:PATTern?
Set or retrieve the Generator data type. PRBS-11 is available only on BERTScope
Analyzers. The Passthrough type is available only on BSA85C, BSA175C, and
BSA286CL.
Params:
Returns:
mand list (See page 7, Command listing.)
<"filename" >
<PN7 | PN11|
PN15 | PN20 |
PN23 | PN31>
<USTart> User pattern (See GEN:UPLoad command to load a
<UCYCle>
<ZERO>
<PASSthrough>
< PN7 | PN11 | PN15 | PN20 | PN23 | PN31 | USTART | UCYCLE | ZERO
| PASSTHROUGH >
Filename is enclosed in double quotes.
Generator pseudo-random pattern data type.
PN11 pattern is available only on the BERTScope
Analyzer.
user pattern file)
User pattern cycle
All-zeros pattern
When corresponding option is purchased, Detector
Pass-Through mode outputs whatever the Detector has
just received. Available only on BSA85C, BSA175C,
and BSA286CL.
GENerator:PSELect <A | B>
GENerator:PSELect?
Set or retrieve the selected page of the user pattern loaded to the Generator.
<A> User pattern page AParams:
<B> User pattern page B
Returns:
< PAGEA | PAGEB >
GENerator:PSWitch
Switch the page of the user pattern loaded to the Generator. Action only.
BERTScope Remote Control Guide 17
Generator Data Generator
GENerator:UPL
oad <"filename">
Load user pattern from the specified file. Action only.
Params:
<"filename">
Use the absolute path name and enclose the string in
double quotes.
GENerator:UPLPercent?
Retrieve the user pattern loading percentage completion value. Query returns 100
if the loading is complete. Query only.
Returns: < number >
The percentage of user pattern loaded into the
Generator
GENerator:UPLTracking<bool>
GENerato
r:UPLTracking?
Set or retrieve whether the Generator tracks the Detector when loading a user
pattern
. If the tracking is true, the command GEN:UPL <“filename”> loads the
user pattern into both the Generator and Detector.
Params: <bool>
Returns:
<1>
<0>
On=1,Off=0
Generator tracks Detector when loading
Generator does not track D etector when loading
rator:UPWLen?
GENe
Retrieve the word count from the Generator RAM. Query only.
Returns: < number >
The number of words in RAM
Complete command list (See page 7, Command listing.)
18 BERTScope Remote Control Guide
Generator Pattern Start
Generator Pat
tern Start
Complete com
GENerator:PSTart:LFAMily<LVTTL|CML|ECL|PECL|LVPECL>
GENerator:
Set or retrieve the pattern start input signal logic family. Command available
only on the
Params:
Returns:
GENerator:PSTart:TAC <bool>
GENerator:PSTart:TAC?
Set or retrieve the termination AC of the Generator pattern start input.
Params: <bool>
Returns:
mand list (See page 7, Command listing.)
PSTart:LFAMily?
BitAlyzer.
<LVTTL | CML
|ECL|PECL
LVP ECL>
< LVTTL | CML | ECL | PECL | LVPECL >
<1>
<0>
|
The pattern start input logic family
On=1,Off=0
Generator pattern start input termination AC is on
Generator pattern start input termination AC is off
GENerator:PSTart:THReshold <numeric>
GENerator:PSTart:THReshold?
Set or retrieve the threshold of the Generator pattern start input. Command is
available only on BitAlyzer.
Params: <numeric>
Returns: <numeric>
Generator pattern start input threshold in mV. Range
[–2,000 to 4,000]. Input out of range will be clipped and
recorded in the status queue.
GENerator:PSTart:TMODe <REDGe | FEDGe | DISabled>
GENerator:PSTart:TMODe?
Set or retrieve the trigger mode of the Generator pattern start input.
Params:
Returns:
<REDGe> Generator pattern start trigger at the rising edge
<FEDGe> Generator pattern start trigger at the falling edge
<DISabled>
< REDGE | FEDGE | DISABLED >
Trigger is disabled.
BERTScope Remote Control Guide 19
Generator Spread Spectrum Clock
GENerator:PST
art:TVOLtage<numeric>
GENerator:PSTart:TVOLtage?
Set or retriev
Params: <numeric>
Returns: <numeric>
e the termination voltage of the Generator clock input.
Generator clock input termination voltage in mV. Range
[–2,000 to 3,
recorded in the status queue.
Complete command list (See page 7, Command listing.)
Generator Spread Spectrum Clock
NOTE. SSC commands apply to the BERTScope only.
Complete command list (See page 7, Command listing.)
GENerator:SSCMOD:DEViation <numeric>
GENerator:SSCMOD:DEViation?
300]. Input out of range will be clipped and
Set or retrieve the SSC modulation deviation. Argument range is different for first
generation hardware (Option SSC) and second generation (Option XSSC).
Params: <numeric>
Returns: <numeric>
SSC modulation deviation in ppm.
Option SSC: Range [0 to 10,000] in Down spread or Up
spread mode; [0 to 5,000] in Center spread mode.
Option XSSC: Range is a function of data rate. Refer to
BERTScope Analyzer Technical Specifications.
GENerator:SSCMOD:ENABle <bool>
GENerator:SSCMOD:ENABle?
Set or retrieve whether the SSC/XSSC option is enabled (option must be present
in order to enable; see GEN:SSCMOD:PRES command below).
Params: <bool>
Returns:
<1>
<0>
On=1,Off=0
SSC is enabled
SSC is disabled
20 BERTScope Remote Control Guide
Generator Spread Spectrum Clock
GENerator:SSC
MOD:FREQuency <numeric>
GENerator:SSCMOD:FREQuency?
Set or retriev
e the SSC modulation frequency. Argument range is different for
first generation hardware (Option SSC) and second generation (Option XSSC).
Params: <numeric>
Returns: <numeric>
GENerator
:SSCMOD:PRESent <bool>
SSC modulation frequency in Hz.
Option SSC: Range [25,000 to 35,000]
Option XSSC:Range [20,000 to 160,000]. Note that
modulation deviation is uncalibrated for modulation
frequencies >40 kHz.
GENerator:SSCMOD:PRESent?
Set or ret
Params: <bool>
Returns:
rieve whether the SSC/XSSC option is present.
On=1,Off=0
<1>
<0>
SSC is present.
SSC is not present.
GENerator:SSCMOD:SIGnal <TRIANGLE | SINUSOID>
GENer
ator:SSCMOD:SIGnal?
Set or retrieve the SSC/XSSC modulation signal type.
Triangular-shaped modulationParams:
Returns:
<TRIANGLE>
<SINUSOID> Sinewave-shaped modulation
< TRIANGLE | SINUSOID >
GENerator:SSCMOD:SIGNALSETTABLE?
Returns whether the SSC/XSSC modulation signal is selectable. First-generation
SSC hardware only modulates in TRIANGLE mode. Query only.
eturns:
R
1>
<
<0>
Modulation is selectable (TRIANGLE or SINUSOID)
(XSSC hardware)
Only modulates in TRIANGLE mode (1st generation
SSC hardware)
BERTScope Remote Control Guide 21
Generator Clock Input
GENerator:SSC
GENerator:SSCMOD:TYPE?
Set or retriev
Params:
Returns:
Complete command list (See page 7, Command listing.)
Generator Clock Input
Complete command list (See page 7, Command listing.)
GENerator:CINPut:LFAMily <LVTTL | CML | ECL | PECL | LVPECL>
GENerator:CINPut:LFAMily?
MOD:TYPE<UP | DOWN | CENTER>
e the SSC/XSSC modulation type.
<UP>
<DOWN>
<CENTER> Modulation
<UP|DOWN|CENTER>
Modulation deviation ranges from the nominal frequency
to the nomina
Modulation deviation is centered around the nominal
frequency.
minus the deviation amount to the nominal frequency.
l frequency plus the deviation amount.
deviation ranges from the nominal frequency
Set or retrieve the Generator Clock input logic family. This command is available
only on the BitAlyzer platform.
Params:
Returns:
<LVTTL | CML
|ECL|PECL|
LVPECL>
< LVTTL | CML | ECL | PECL | LVPECL >
Set the Generator Clock input logic family
GENerator:CINPut:TAC <bool>
GENerator:CINPut:TAC?
Set or retrieve the termination AC of the Generator Clock input.
Params: <bool>
Returns:
<1>
<0>
n=1,Off=0
O
enerator Clock input termination AC is on
G
Generator Clock input termination AC is off
22 BERTScope Remote Control Guide
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