Front Panel Connections 9
Rear Panel Connections 9
Manual Operation 11
General 11
Frequency and Level Setting 13
Step Sweep 13
List Sweep 14
Common Sweep Functions and Attributes 15
Trim 16
Factory Default Settings 17
Utilities 19
Store 19
Recall 19
Edit List Name 19
Set Edit Mode 19
Ref Socket 20
Interfaces 20
Buzzer 20
Power Up Mode 20
Version Info 20
Calibration 20
Remote Interface Oper at ion 21
Address Selection, RS232 Baud Rate and LAN status 21
Remote/Local Operation 21
RS232 Interface 22
USB Interface 23
LAN Interface 23
GPIB Interface 25
Status Reporting 26
Power-on and Remote Operation Default Settings 29
Remote Commands 30
Remote Command Format 30
GPIB Remote Command Format 30
Command List 31
Maintenance 35
Full operating instructions for t his inst rument can also be found in the appropriate pr oduct folder of the
accompanying CD-ROM or downloaded from: http://www.tti-test.com/support-tti.htm
1
Introduction
This fast sweep programmable RF g enerator provides a synthesised low noise output over the
frequency range 10MHz to 6000MHz and output level range
The output amplitude and/or f r equency can be swept over the full range of each in a single
sweep. The instrument can be set up to perform t wo types of sweep. The fir st s weep type is a
Step Sweep in which the start and stop conditions are defined, together with the number of points
in the sweep, linear or logarithmic spacing between points, and a dwell time at each point.
The other sweep type is a List Sweep in which up to 1000 points are defined in a sweep list, with
the frequency, level and dwell time specified for each point. Both t ypes of sweep can be free run
or triggered by a Sweep Trigger from a variety of sources; in addition, a Point Trigger can also be
defined for each individual step of the sweep. A rear panel SYNC output signal indicates when
the output is stable, and can be user-progr am m ed t o be high or low.
The output level can be adjusted to correct for external equipment frequency response using the
TRIM function. The TRIM function consists of a user prog r am m able list of up to 100 amplitude
adjustment /frequency pairs. When turned on, t he TRIM funct ion adj usts t he output level by an
amount linearly interpolated between the frequencies specified in the list. The resultant output
level is required to remain within the normal output level limits specified for t he inst r um ent;
automatic testing is applied to ensure this and a warning is issued if the desired output violates
this requirement.
-110dBm to +7dBm.
The instrument provides non-volatile storage for up to 12 instrument setups and up to 16 sweep
lists.
The instrument is remotely controllable via LAN, USB, RS232 or GPIB, all of which are
simultaneously available.
2
<-25dBc@levels <=0dBm 10 – 30MHz
Specification
FREQUENCY
Frequency Range: 10MHz – 6000MHz
Setting Resolution: 10Hz
Accuracy and Stability: see Reference Frequency
Phase Noise: 500MHz Carrier :
50Ω
Output Connector: Type N
Reverse Voltage Protection: 50V DC
Output Switch: RF OUT On/Off switch with indication of ON status
FREQUENCY and AMPLITUDE SWEEP
Step Sweep
Step frequency and/or amplitude according to a form ula over a specified number of points.
Maximum 1000 points.
Formula specifies: Frequency start/stop
Amplitude start/stop
Dwell time at each step – programmable 0.01s to 10. 000s
Sweep - continuous or single.
Linear or logarithmic step spacing.
Sweep up or down.
Sweep triggering - manual, external trigger, timed (0.1 – 999.9sec), or via remote interfac e.
Step triggering (Point Trigger mode) - manual, external trigger, or via remote interface.
Sync signal (‘output stable’) available during dwell time. Programmable to be high or low.
List Sweep
As for Step Sweep except that a user defined list of frequenc y, amplitude and dwell time values
defines each sweep point. The list can be created within the instrument or downloaded via the
remote interfaces.
Current sweep list plus up to 16 stored lists, each a maximum of 1000 points, stored in nonvolatile memory.
TRIG IN Input
DC coupled External Trigger Input signal used to trigger start of sweep and/or step changes
when Point Trigger mode is enabled.
Input Threshold: 1.65V nominal. Trigger polarity can be set to Negative Edge or
Input Protection: Maximum/minimum external applied voltage is +6V or –1V.
Positive Edge.
SYNC Output
Rear panel output SYNC signal goes to its active state when generator output f r equency & level
have settled within specification after a step change during sweep. SYNC returns to inactive state
at end of specified dwell period.
Active Output Level: +5V (Active state set to ‘Pos’) or 0V (Active state set to ‘Neg’)
Output Impedance:
Output Protection: Output will withstand accidental short circuit to ground and applied
4
50Ω. Minimum load impedance is also 50Ω.
external voltages up to +5V.
Installation Category II.
Storage Range:
–20°C to + 60°C
User Level Compensation Table (TRIM)
A table of frequency/g ain pairs allows the user to modify the generator output level with respect
to frequency to calibrate an entire test set up or improve the calibration of the generator alone.
The table can be created within the instrument or downloaded via the remote interfaces.
Maximum 100 points.
INTERFACES
Full digital remote control facilities are available through the RS232, USB, LAN and GPI B
interfaces.
RS232: Standard 9-pin D-connector. Variable Baud rat e c an be set between 1200
and 115200 Baud m aximum
GPIB: Conforming with IEEE488.1 and IEEE488.2
USB: Standard USB 2.0 hardware connection. Operates as a virtual COM port.
LAN: Ether net 100/10base-T hardware connection.
Display 20 character x 4 row backlit alphanumeric LCD
Data Entry: Value ent r y of all major parameters direct by numeric keys, or by rotary
control and up/down keys at selected resolution.
Value stepping of frequency and level in user-def ined incr em ents is also
possible using the rotary control and/or up/down keys.
Stored Settings: Up to 12 complete set-ups.
Up to 16 sweep lists
Operating Range: +5°C to +40°C, 20 - 80% RH
Environmental: Indoor use at altitudes up to 2000m, Pollution Degr ee 2.
EMC: Complies with EN61326
Safety: Complies with EN61010-1
Size:
Weight: 3.65 kg
Options: 19-inch rack mounting kit .
86.5mm (2U) height; 213.5m m ( ½−rack) width; 350mm long.
5
Performance levels achieved are detailed in the user manual.
EC Declaration of Conf ormity
We Thurlby Thandar Instruments Ltd
Glebe Road
Huntingdon
Cambridgeshire PE29 7DR
England
declare that the
TGR6000 6GHz Synthesised RF Signal Generator
meets the intent of the EMC Directive 2004/108/EC and the Low Voltage Directive 2006/95/EC.
Compliance was demonstrated by conformance to the following specifications which have been
listed in the Official Journal of the European Comm unit ies.
EMC
Emissions: a) EN61326-1 (2006) Radiated, Class B
b) EN61326-1 (2006) Conducted, Class B
c) EN61326-1 (2006) Har m onics, referring to EN61000-3-2 (2006)
Immunity: EN61326-1 ( 2006) I mmunity Table 1, referring t o:
a) EN61000-4-2 (2009) Electrostatic Discharge
b) EN61000-4-3 (2006) Electromagnetic Field
c) EN61000-4-11 (2004) Voltage Interrupt
d) EN61000-4-4 (2004) Fast Transient
e) EN61000-4-5 (2006) Surge
f) EN61000-4-6 (2009) Conducted RF
Safety
EN61010-1 Installation Category II, Pollution Degree 2.
CHRIS W ILDING
TECHNICAL DIRECTOR
2 January 2013
6
This instrument has been designed to meet the requirements of the EMC Directive 2004/108/EC.
Compliance was demonstrated by meeting the test limits of t he following standards:
Emissions
EN61326-1 (2006) EMC product standard for Electrical Equipment for Measurement, Control and
Laboratory Use. Test limits used were:
a) Radiated: Class B
b) Conducted: Class B
c) Harmonics: EN61000-3-2 (2006) Class A; the instrument is Class A by product cat egory.
Immunity
EN61326-1 (2006) EMC product standard for Electrical Equipment for Measurement, Control and
Laboratory Use.
Test methods , limits and performance achieved are shown below (requirement shown in
brackets):
a) EN61000-4-2 (2009) Electrostatic Discharge : 4kV air, 4kV contact, Performance A (B).
EMC
b) EN61000-4-3 (2006) Electromagnetic Field:
3V/m, 80% AM at 1kHz, 80MHz – 1GHz: Performance A (A) and 1.4GHz to 2GHz:
Performance A (A); 1V/m, 2.0GHz to 2.7GHz: Perf or mance A (A).
c) EN61000-4-11 (2004) Voltage Inter r upt: ½ cycle and 1 cycle, 0%: Performance A (B);
25 cycles, 70%: Performance A(C) and 250 cycles, 0%: Performance B (C).
d) EN61000-4-4 (2004) Fast Transient, 1kV peak (AC line only; signal connections <3m,
therefore not tested
e) EN61000-4-5 (2006) Surge, 0·5kV (line to line), 1kV (line to ground), Performance A (B).
f) EN61000-4-6 (2009) Conducted RF, 3V, 80% AM at 1kHz (AC line on ly; s ignal
connections <3m, therefor e not tested
†
Signal lines were not tested on the basis that typical use will be with connections <3m, for
which there is no test requirement. Immunity performance with connections >3m is not
guaranteed.
According to EN61326-1 the definitions of performance criteria are:
Performance criterion A: ‘During test normal performance within the specif icat ion limits.’
Performance criterion B: ‘During t est, temporary degradation, or loss of function or
performance which is self-recovering’.
Performance criterion C: ‘During t est, temporary degradation, or loss of function or
performance which requires operator int er vention or s ystem r es et occ ur s.’
†
) Performance A (B).
†
), Performance A (A).
Cautions
To ensure continued compliance with the EMC directive observe the following precautions:
a) Connect the generator to ot her equipment using only high quality, double-screened cables.
b) After opening the case for any reason ensure that all signal and ground connections ar e
remade correctly and that case screws are correc t ly refitted and tightened.
c) In the event of part replacement becom ing necessary, only use components of an identical
type, see the Service Manual.
7
l
Safety
This instrument is Safety Class I accor ding to IEC classification and has been designed to meet
the requirements of EN61010-1 (Safety Requirements for Electrical Equipment for Measurement,
Control and Laboratory Use). It is an Installation Category II instrument intended for operation
from a normal single phase supply.
This instrument has been tested in accordance with EN61010-1 and has been supplied in a safe
condition. This instruction manual contains some information and warnings which have to be
followed by the user to ensure safe operation and to r etain the inst r um ent in a safe condition.
This instrument has been designed f or indoor use in a Pollution Degree 2 environment in the
temperature range 5°C to 40°C, 20% - 80% RH (non-condensing). It may occasionally be
subjected to temperatures between +5°C and –10°C without degradation of its saf et y. Do not
operate while condensation is present.
Use of this instrument in a manner not spec ified by these instructions may impair the safety
protection provided. Do not operate the instrum ent outside its rat ed supply voltages or
environmental range.
WARNING! THIS INSTRUMENT MUST BE EARTHED
Any interruption of the mains earth conduct or inside or outside t he inst r um ent will make the
instrument dangerous. Int entional interruption is prohibited. The protective action must not be
negated by the use of an extension cord without a protective conductor.
When the instrument is connected to its supply, terminals may be live and opening the covers or
removal of parts (except those to which access can be gained by hand) is likely to expose live
parts. The apparatus shall be disconnected from all voltage sources before it is opened for any
adjustment, replacement, m aint enance or repair.
Any adjustment, maintenance and repair of the opened instrument under voltage shall be
avoided as far as possible and, if inevitable, shall be carried out only by a skilled person who is
aware of the hazard involved.
If the instrument is clearly def ec t ive, has been subject to mechanical damage, excessive
moisture or chemical corrosion the safety protection may be impaired and the apparatus should
be withdrawn from use and returned for checking and repair.
Do not wet the instrument when cleaning it and in particular use only a soft dry cloth to clean the
LCD window.
The following symbols are used on the instrument and in this m anual:-
Caution - refer to the accompanying documentation,
incorrect operation may damage the instr um ent.
terminal connected to chassis ground.
mains supply OFF.
8
mains supply ON.
alternating current.
50VDC and reverse power of up to 25 Watts from 50 Ω.
Mains Operating Voltage
This instrument has a universal input range and will operate fr om a nominal 115V or 230V mains
supply without adjustment. Check that the local supply meets the AC input requirement given in
the Specification.
Mains Lead
Connect the instrument to the AC supply using the mains lead provided. Should a mains plug be
required for a different mains outlet socket, a suitably rated and approved mains lead set should
be used which is fitted with the required wall plug and an IEC60320 C13 connector for the
instrument end. To determine the minimum current rating of the lead-set for the intended AC
supply, r efer to the power rating inform ation on the equipment or in the Specification.
WARNING! THIS INSTRUMENT MUST BE EARTHED.
Any interruption of the mains earth conduc t or inside or outside the inst rument will make the
instrument dangerous. Int entional interruption is prohibited.
Mounting
Installation
This instrument is suitable both for bench use and rack mounting. For rack mounting the
instrument can be fitted beside anot her standar d 2U half-rack instrument in a 19” r ac k; a suitable
2U 19” rack kit is available from the Manufac t ur er s or t heir overseas agents.
Ventilation
The generator uses a small f an fitted to the rear panel. Tak e c ar e not to restrict the rear air e xit
or the inlet vents underneath. In rack-m ount ed s it uat ions allow adequate space around t he
instrument and/or use a fan t r ay for forced cooling.
Front Panel Connec tions
RF OUT
This is the 50Ω generator output. The maximum output is 500mVrms (+7dBm) into 50Ω. It can
tolerate a short circuit indefinitely.
The Type N connector is a precision component that should be protect ed from excessive wear to
ensure that its RF characteristics (impedance and VSWR) are accurately maintained. If the
instrument is used in a manner that demands m any connections/disconnections to and from the
RF OUT it is good practice to fit a male–to–fem ale adapt or t o the socket which can be replaced
periodically.
Connections
Do not apply an external voltage to this output. Protected against ac cidental connection of up to
Rear Panel Connections
EXTERNAL REFERENCE IN/OUT
Can be set to be the External Reference In (10MHz, 2V to 5Vpp, 50Ω), Internal Reference Out
(10MHz, 4Vpp from 50Ω) or OFF.
Do not apply external voltages exceeding ± 10Vpp to this input/output.
9
and application of up to +5V.
Pin Name
Description
3
RXD
Received data to instrument
TRIG IN
DC coupled External Trigger Input signal used to trigger start of sweep and/or step changes
when Point Trigger mode is enabled. Nominal threshold 1.65V. Trigger polarity can be set to
Positive or Negative edge.
Do not apply external voltages to this input exceeding +6v or –1V.
SYNC OUT
SYNC OUT signal goes to its active state when generator output has settled aft er a step change
during Sweep. Active state can be set to Positive (+5V from 50Ω) or Negative (0V).
Do not apply an external voltage to this output. Protected against ac cidental short cir cuit to 0V
RS232
9−pin female D−connector with pin connections as shown below. Can be connected to a
standard PC port using a fully wired 1:1 male-female cable without any cross-over connections.
1 RI
2 TXD Transmitted data from instrument
Passively asserted (+V through 10kΩ)
USB
LAN
4 CTS
5 GND Signal ground
6 RTS
7 DSR No internal connection
8 DTR
9 CD No internal connection
Signal ground is connected to instrument ground. Baud rate 1200 to 115200.
The USB port is connected to instrument ground. It conforms with USB 2.0 (Full Speed) and
accepts a standard USB cable. The Windows plug-and-play funct ions should aut om at ically
recognise that the instrument has been c onnected. If the correct dr iver is not found, follow the
Windows on-screen prompts and install the required files from the CD supplied.
Remote control using the LAN interf ace is poss ible using a TCP/IP Socket protocol. Since it is
possible to misconfigure the LAN interface, making it impossible to comm unicate with the
instrument over LAN, a LAN Configuration I nitialise (LCI ) m ec hanism is pr ovided via a recessed
switch on the rear panel (marked LAN RESET) to reset t he unit to the factory default.
Note that the LAN interface meets the es sential requirements of LXI ( Lan eX t ens ions for
Instrumentation) version 1.2, Class C, but is not fully compliant because it does not, for example,
contain a Web server. Instead, LAN configuration is only provided via a front panel menu.
Passively asserted (+V through 10kΩ)
Further details are given in the Remote Operation chapter.
GPIB
The GPIB signal grounds are connect ed to the instrument ground. The implemented subsets ar e:
The GPIB address is set fr om t he front panel.
10
SH1 AH1 T6 TE0 L4 LE0 SR1 RL2 PP1 DC1 DT0 C0 E2
◊
General
This section is a general introduction to t he oper at ion of the generator, intended to be read
before using the instrument for the first time.
In this manual names of connectors and front panel keys are show in capitals, e.g. RF OUT,
UTILITIES; all soft-key labels, entry fields and messages displayed on the LCD are shown in a
different type-font, e.g. Level Trim, Run Sweep.
Switching On
The power switch is located at the bottom left of the front panel. To f ully disconnect from the AC
supply unplug the mains cord from the back of the instrument or switch off at the AC supply
outlet; make sure that the means of disconnection is readily accessible. Disconnect from t he AC
supply when not in use.
At switch on communication is established between internal modules and the individual modules’
firmware versions are displayed as the process proceeds. This infor mation is available
subsequently as Version Info , accessed via the Utilities menu.
During power up, calibration information is check ed. If an error in the calibration data is detected
a message is displayed and the calibration is automatically set to default values.
All operating settings, except RF OUT on/off and Sweep Run/Stop status, are saved in flash
memory at power off and re-instated at power up. The factor y def ault is for RF OUT to be
‘always off’ at power up but, alternatively, it can be set to be ‘always on’ or ‘same as at last power
off’, see the Utilities section. Sweep is always stopped at power up. Data integrity of the settings
is checked at power up and if an error is f ound t he s et t ings are set to default values.
Keyboard Principles
The keyboard consists of a number of hard keys and eight soft-k eys arr anged as two groups of
four, one on each side of the display.
Manual Operation
The hard keys can be categorized as menu access keys and value editing keys in addition to the
manual trigger TRIG key and the RF OUT on/off key.
Beneath the display are the menu access keys. The UTILITIES key directly accesses the
Utilities Menu, the Sweep SETUP key directly accesses the Sweep Setup Menu and the FREQ
and LEVEL keys both access the Main menu, which shows the basic output parameters with the
edit cursor moved directly to frequency or level as selected.
The TRIG key provides a manual trigger for use in sweep modes.
The RF OUT on/off key switches the output on and off with alternat e pr ess es; the front panel ON
indicator is lit when the output is on.
Value editing keys consist of a numeric key-pad, up & down (▲ & ▼) and left & right (◄ & ►
arrow keys and a BACK/Escape key. The ▲ & ▼ arrow keys are for value increment/decrement
and selection scrolling, the ◄ & ►
within parameter values. The BACK/Escape key acts both as a cancel key to abort numeric or
text entries and as a major means of navigat ing within the menu structure, retur ning always to
the next higher menu level.
The knob performs the same function as the ▲ & ▼ arrow keys except when the output
frequency and level editing mode is set to Step Only or Step+Scroll on t he BASIC
FREQUENCY AND LEVEL SETTING MODE menu. See Editing Numeric Values section for
further details.
The eight soft-keys are select ively active depending on the curr ent m enu. One of four possible
icons next to the keys indicates the key function and which are active. An open diamond
indicates that the adjacent field is not selected and that one of a number of actions will result
from pressing the key, depending on t he c ont ext.
arrow keys are for left and right movement of the edit cursor
)
11
If the open diamond is next to a numeric f ield, pr ess ing the adjacent soft-key selects the field for
editing and the icon changes to a filled diamond ♦ to indicate that the numeric f ield is selected
and editable by a combination of direct number entry, scrolling or stepping. If the open diamond
is next to a scrollable field the icon changes to a f illed, split diamond
selected and editable by scrolling through a limited number of possibilities using the ▲ & ▼
arrow keys or the knob. Repeated presses of the same soft-key will also scroll the field in one
direction.
If the open diamond is next to a text field indicating a s ub-menu then pressing the adjacent softkey immediately displays that sub-menu. The BACK/Escape key will always return from the submenu.
If the open diamond is next to a text field indicating an ac t ion t hen t he ac t ion will happen
immediately the soft-key is pressed except when confirmat ion is required, for example to prevent
unintended overwriting of existing stored data.
An open diamond next to text describing value units will appear during direct number entry. The
soft-keys then function as ent er keys, using the units specified.
Some menus are capable of being scrolled off t he s cr een. In this case a down and/or an up
arrow with the word more will be displayed next to soft-keys to be used to scroll the menu. The
▲ & ▼ arrow keys and knob also scroll the menu when these icons are present.
to indicate that the field is
Editing Numeric Values
Numeric values can generally be edited by direct numeric input from the keypad or by scrolling
using the ▲ & ▼ arrow keys or the knob. In addition, the basic output frequency and level can
be stepped in user-programmable st ep sizes when Step Only or Step+Scroll modes ar e
selected on the BASIC FREQUENCY AND LEVEL SETTING MODE menu, accessed by
selecting Set Edit Mode on the UTILITIES menu. The step sizes are also edited via this
menu.
In order to edit a numeric value the field must first be selected by pressing the adjacent soft-key,
which will result in the adjacent diamond becoming filled in and the scroll edit cursor being
displayed. If editing of the field is restricted to scrolling only, a split diamond is shown; if direct
number entry is also accepted the diamond is not split.
The scroll edit cursor consists of a flashing underscore indicating which character in the numeric
field will be scrolled. The position of the scroll edit cursor within the field is moved by the ◄ & ►
arrow keys. The knob and ▲ & ▼ arrow keys perform the scrolling function. Moving the edit
cursor left can introduce leading zeroes consistent with the m aximum poss ible value in the field.
The output frequency and level fields on the Main menu behave differently depending on
the Edit Mode selected. If Step Only is selected then no scroll edit cur sor will be displayed in
these two fields and the knob and the ▲ & ▼ arrow keys step the value according to the
programmed step sizes. If Scroll Only is selected the knob and ▲ & ▼ arrow keys perform
the usual scrolling function. If Step+Scroll is selected the scrolling function is performed by
the knob and the stepping function is performed by the ▲ & ▼ arrow keys.
If the field that is select ed acc epts direct number entry, pressing any numeric key will immediately
change the display to a numeric editing screen with the entered num ber pr es ent ed as t he m os t
significant digit of the new value. Unit soft-keys on the right side of the display enter the new
number when pressed. The ◄ arrow key doubles as back space (BK SP) on these screens and
erases one character at a time. The BACK/Escape key will cancel the new number and return
with the selected field unchanged.
Scrollable Parameters
Many parameters are set up through scrollable lists. As with numeric fields these fields must first
be selected using the adjacent soft -key; the icon then changes to a split diamond
Subsequent presses of the sam e key will scroll through the list in one direction. The ▲ & ▼
arrow keys or the knob allow the list to be scrolled in either direction.
12
.
◊
Editing Text
Sweep lists and setups can be stored with optional eight character text labels. Characters within
the label are edited by scrolling or by direct numeric entry at the edit cur sor position. The edit
position moves on automatically after direct numeric entr y or can be m oved in either direction
using the ◄ & ►
arrow keys. The characters available by scrolling are: A, B, C, ….. X, Y,
Z, 0, 1, 2, …… 8, 9, +, –,
Frequency and Level Setting
At switch on the default display is the Main menu from which output frequency and level can be
set directly. The parameter to be set is selected by either the front panel FREQ or LEVEL keys,
or by the Freq or Level soft-keys. In the default edit mode of Scroll Only the selected
parameter can then be edited by direct numeric input from the keypad, by using the ▲ & ▼ and
◄ & ►
to set user-defined step sizes for use in alternative edit modes.
The Main menu also gives access to the EDIT TRIM LIST menu from which the level Trim List
can be set and Trim can be enabled/disabled; see the Trim section later in this manual.
Sweep (see the following sections) can be turned on and off from the Main menu using the Run
Sweep soft-key; when sweep is running this soft-key chang es to Stop Sweep . Note that
when sweep is running the frequency and level cannot be changed from t he Main menu and the
diamonds (
arrow keys, or by the knob; see the Editing Num er ic Values for details of this and how
or ♦) beside the Freq and Level soft-keys are suppressed to indicate this.
Step Sweep
In Step Sweep mode the instrument will sweep between defined start and end points via a
specified number of points, or vice-versa, acc or ding to the Up/Down attribute specification;
frequency, level or both may be swept. See Common Sweep Functions and Attributes section for
details. Frequency sweep may be linear or logarithmic.
To select Step Sweep mode press SWEEP SETUP to show the top level SWEEP menu and
select Step with the sweep Type= soft-key. To set the start and stop c onditions, the
frequency sweep scale shape, the number of points in the sweep and the dwell time for all points
in the sweep press the Edit Sweep soft-key.
The start and stop specification can be set by pressing the Start= or Stop= soft-keys in the
STEP SWEEP EDIT menu to access the STEP SWEEP START and STEP SWEEP STOP
menus respectively, both of which allow the appropriate frequency and level values to be set up,
see Editing Numeric Values section. Note that all sweep levels are only displayed in dBm, even
though the numeric entry process allows them to be ent er ed in ot her units; the conversion is
made automatically.
The Step Sweep frequency scale shape is scrollable between Lin and Log. For a linear scale
shape all frequency intervals between points are equal. For a log scale shape the frequency
intervals increase exponentially from the Start freq uenc y to t he Stop frequency, irrespective
of sweep direction.
The number of points in the sweep is editable by scrolling and direct numeric input. A minimum
of two points may be specified, which will just step between the Start and Stop conditions.
., #, space, _ (underscore).
The Dwell time is defined as the time that the output of the instrum ent will remain stable at
each point of the sweep, unless the Point Trigger is enabled (see below). The dwell timer starts
once the output is deemed stable and coincides with the rear panel SYNC signal being set to its
active state Pos or Neg, see Common Sweep Functions and Attributes. The sweep will step to
the next point when the dwell time expires and the SYNC signal will be returned to its inactive
state.
If Point Trigger is enabled then the dwell time specification is ignored and the sweep will step to
the next point when the point trigger occurs, which must not be sooner than the minimum dwell
time (10ms). See Point Trigger Menu section for how to set up and enable/disable point trig ger.
13
List Sweep
In List Sweep mode the sweep output will be set according to values specified by the user in a
sweep list. If the Up/Down attribute specificat ion is set to Up the list will be followed in numeric
order starting at point #0001 and continuing t o t he maximum specified point; if Down is set t he
sweep will start at the maximum specified point and end at point #0001. Each point in the list
specifies a frequency, level and dwell time for that point. Frequency, level or both may be swept
See Common Sweep Functions and Attributes for details.
List Sweep mode is selected by scrolling to Type=List in the SWEEP: menu.
The sweep list may be then be created and edited by pressing the Edit Sweep soft-key in the
SWEEP: menu; see Editing Sweep and Trim Lists for details.
Dwell time, the Sync signal and Point Trigger perform in the same way as for Step Sweep. The
only difference is that the dwell time can be specified differently f or every step.
Editing Sweep and Trim Lists
To edit the sweep list select Type=List in the SWEEP: menu and t hen press the Edit
Sweep soft-key. The Trim list editor is enter ed from the MAIN menu by pressing the Level
Trim soft-key. The format of t he two lists differs only in the Dwell parameter that is present in
the sweep list but not in the Trim list.
Navigation from one list row to another is achieved via the #nnnn or #nnn f ield in the t op lef t
corner of the display. The scroll resolution can be adjusted with the ◄ & ►
faster/slower movement throug h the list. If the list does not contain the maximum num ber of
rows, scrolling past the highest entry in the list will reveal a blank row.
To enter a new value into a parameter at any row in the list, including the blank row, press the
soft-key next to the parameter to be edit ed. At the blank row the user must directly enter the
numeric value into the selected field as described in the Editing Numer ic Values section. The
other fields at this row will automatically be filled with the values from the previous row in the list.
These can then be edited as required. When the selected f ield already contains a value it may
be edited using direct entry or by scrolling.
At any row in the list a new row may be inserted by pressing the Ins (insert) soft-key on the
right side of the screen. The new row will be inserted above the currently displayed row and will
be an exact copy. The screen will show the newly inserted row, which can then be edited as
required. All higher rows in the list will be moved up one location. If the list already contains the
maximum number of rows the contents of the highest row will be lost.
The Del (delete) soft-key on the r ig ht of the display gives access to a Delete sub-menu for row
delete and list delete operations. Row delete is performed by pressing the Delete Row softkey. No confirmation is requested and the current row on the list is deleted and replaced by the
next higher row; all other higher rows will be moved down one place. List delete is performed by
pressing the Delete Sweep List or Delete Trim List soft-key. Confirmation is
requested before the oper at ion is com plet ed and t he CANCEL soft-key or the BACK/escape key
will cancel the operation. After the list is deleted a single step will remain containing default
values.
arrow keys for
14
The Delete sub-menu for the sweep list additionally provides an operation which copies the
currently defined Step Sweep into the sweep list. It does this by calculating all points of the Step
Sweep and copying them into the sweep list, which then contains a number of rows equal to the
number of points specified in the Step Sweep.
Common Sweep Functions and Attributes
There are a number of menus from which the sweep may be started by pressing the Run
Sweep soft-key. The function of the soft-key changes to Stop Sweep when the sweep is
running. Stopping the sweep will return the instrument output to the conditions specif ied on t he
Main menu.
There are a number of common sweep parameters that are attributable to both Step and List
sweeps and which are set up via the Sweep Mode and Sync/Trigger Setup menus.
Sweep Mode menu
The SWEEP MODE menu is accessed by pressing the Mode soft-key on the SWEEP: menu.
Either the frequency may be swept alone, leaving the level as specified on the Main menu and
ignoring any level values in the sweep specification, or the level alone may be swept leaving the
frequency as specified on the Main menu, or both m ay be swept simultaneously. The selection is
made by scrolling between Frequency+Level , Frequency and Level on the SWEEP MODE menu.
The sweep mode can be soft-key switched between Single and Repeat. In Single mode
the sweep will be performed once only after any initial Sweep Trigger requirement is satisfied
and will stop on the last sweep point. If the direction specified is Up then this will be the Stop
condition in a Step sweep or the #maximum point in a List sweep. If the direction is Down this
will be the Start condition in a Step sweep or point #0001 in a List sweep. In Repeat mode
the sweep will repeat after any initial Sweep Trigger requirement is satisfied.
The display can be set to be on or off with alternate presses of the Disp On / Disp Off softkey. This setting applies to updating the display during a sweep on the SWEEP STATUS menu
(accessed from the SWEEP: menu) and on t he Main menu. During fast sweeps it is
recommended that Disp Off is selected to avoid contention between display updates and
maintaining short dwell times.
Sync/Tri gger Setup menu
The SYNC/TRIGGER SET UP menu is accessed by pressing the Triggers soft-key in the
SWEEP: menu.
Sync Out
The active state polarity of the rear panel SYNC OUT signal can be set to Pos or Neg with
alternate presses of the Sync Out= soft-key. The SYNC OUT signal goes to its active state at
each point in the sweep when the output is stable at the values specified for that point. Pos
means +5V and Neg means 0V, which is instrument ground.
Sweep Trigger menu
The SWEEP TRIGGER: menu is accessed by pressing the Set Sweep Trigger soft-key in
the SYNC/TRIGGER SET UP menu, accessed as described above.
If the sweep trigger is left as TriggerDisabled (the default condition) the instr um ent steps
to the first point of the sweep immediately after after a press of the Run Sweep soft-key or a
remote SW PRUN comm and. However, Step and List sweeps can both be specified to wait for a
sweep trigger to start the sweep after a pr es s of the Run Sweep soft-key or a remot e SWPRUN
command by selecting TriggerEnabled with the Trigger Enabled/Disabled soft-key.
After a sweep is initiated, either manually or remotely, and if sweep trigger has been Enabled ,
the output remains unchanged at t he Main menu settings until the sweep trigger is received.
Once the sweep trigger is received the instrum ent will step to the first point of the sweep. The
trigger source is selectable on the SWEEP TRIGGER: menu by scrolling t he Source= soft-key.
The sweep trigger source may be set t o Manual , Timer , Ext Neg Edge , Ext Pos Edge
or Remote .
15
Manual trigger ref er s to the TRIG key on the front panel. Note that if the instrument is in remote
mode following receipt of a remote c om m and, the keyboard is locked out until local operation is
restored by pressing the Local key or by sending the LO CAL remote command.
Timer refers to a delay from t he t im e t he s weep is run, either manually or remotely, t o a sweep
trigger being automatically generated. The amount of delay is set up by selecting the soft -key
which appears next to the time specification on the right of the screen when Timer is selected;
the time can be set from 0. 1s t o 999. 9s
Ext Neg Edge and Ext Pos Edge refer to a signal input via the rear panel TRIG IN
connector. The sweep trigger is generated when the specified input transition is detected.
Remote refers to receipt of a *TRG or GET (GPIB only) command on a remote int er face.
If the sweep mode has been set to Repeat on the SWEEP MODE menu the instrument requires
only one sweep trigger before performing repeated sweeps.
If the sweep mode has been set to Single the instr um ent will remain at t he last sweep point at
the end of the sweep until either the sweep is stopped by a press of the Stop Sweep soft-key
or the SWPSTOP command (which will change the output setting to that of the Main menu) or a
new sweep trigger is received (which starts a new sweep). Note that in single sweep mode, if
Point Trigger (see below) is also enabled, a point trigger is needed to exit the last st ep before the
next sweep trigger can step to the first point of the new sweep; only when both triggers have
occurred will the sweep step from the last sweep point of the com plet ed sweep to the first sweep
point of a new sweep.
Point Trigger menu
If Point Trigger is enabled then the dwell time specification is ignored and the sweep will step to
the next point when the point trigger occurs, which must not be sooner than 10ms. Step and List
sweeps can both be specified to require a point trigger. Point Trigger can be used together with
or without Sweep Trigger.
The POINT TRIGGER: menu is accessed by pressing the Set Point Trigger soft-key in
the SYNC/TRIGGER SET UP menu. The point trigger sour ce is s electable to be Manual ,
Ext Neg Edge , Ext Pos Edge or Remote by scrolling the Source= soft-key. The
definitions of these are the sam e as for Sweep Trigger.
Point Trigger is enabled/disabled with alternate presses of the Trigger Enabled/Disabled
soft-key. Note that, when Point Trigger is enabled, a point trigger is not required to step the
instrument to the firs t point of the sweep but a point trigger is req uir ed t o exit t he last point of a
completed single sweep.
Trim
The output level can be adjusted using the Trim function to calibrate an entir e t es t set up (to
compensate for cable losses for example) or to modify the calibration of the g ener ator alone.
The Trim function consists of a user programmable list of up to 100 amplitude /freq uency
adjustment pairs. When turned on, the Trim function adjusts the output level by an amount
linearly interpolated between the frequencies specified in the list.
16
Both Trim control and Trim List editing are perfor m ed in t he EDIT TRIM LIST m enu, which is
accessed by pressing the Level Trim soft-key on the Main menu (see Editing Sweep and
Trim Lists for details of how to change the Trim List contents). Within the Edit Trim List menu the
Trim function may be enabled by pressing the Enable Trim soft-key, which then alternately
becomes the Disable Trim soft-key. When Trim is enabled the front panel TRIM indicator is
lit to show that the output level is subject to modif icat ion by the Trim function.
The Trim list specifies up to 100 frequency/dB trim value pairs, see Editing Sweep and Trim Lists
section. The output level is modified according to the tr im values at and bet ween the frequencies
specified in the list. Between specified frequencies trim is applied according to a linear
interpolation between the trim values at the specified f r equencies.
At frequencies below the minimum fr equency specified anywhere in the Trim list, level adjustment
will be interpolated linearly between 0dB at 10MHz and the specified trim value at the minimum
specified frequency.
At frequencies above the maximum frequency specified anywhere in the Trim list, trim level
adjustment will be interpolated linearly between 0dB at 6GHz and the trim value at the maximum
specified frequency.
Trim List points can be entered in any order; they are reorganised internally in ascending order of
frequency by the generator when Trim is turned on.
If two entries in the user-creat ed Trim List contain the same frequency they are used in the order
in which they occur within the list starting at the lowest row number. The trim value of the first
entry will be applied at frequencies up to and including the common frequency. The second entry
will be applied at frequencies above the common frequenc y.
If more than two points in the list contain the same f requency the trim values at the first and last
points will be used as described above; intervening values will be ignored.
A check is made that the Trim adjusted output does not exceed +7dBm and is not less than
–110dBm when both the RF out put is O N and Trim is enabled. If the calculated out put exceeds
+7dBm or is less than –110dBm then a warning is sounded and the output level is set to either
+7dBm or –110dBm.
When a sweep is started with Trim enabled a check is made that no part of the c or r ected sweep
is outside +7dBm to –110dBm. If it is, then a warning is issued and the sweep is inhibited.
Trim can be edited with Trim enabled but it does not take effect until it is disabled and enabled
again, or the instrument is powered down and up again.
Factory Default Settings
The following are the factor y def ault settings. The instrument can be returned t o t hes e set tings
at any time by recalling them from Store 00 on the RECALL SETUP menu, see Utilities section.
The *RST remote command will also return the instrument to these settings, with the exception of
the interface specific set t ings.
Basic output frequency 6000.00000MHz
Basic output level -10.0dBm
Level Trim Disabled
Level Trim list Single point set to 10.00000MHz, 0.0dB
Sweep Ty pe Step Sweep
Sweep Start 10.00000MHz, 0.0dBm
Sweep Stop 6000.00000MHz, -50dBm
Sweep Scale Linear
Number of Step Sweep Points 11
Step Sweep Dwell 300msec
Sweep List†
Sweep Mode Frequency + Level, single sweep
Sweep Direction Up
Sweep Status Display On
A single point set to 6000.00000MHz, -110dBm,
0.010s dwell.
17
Secondary DNS *
†
LAN RESET
IP Configuration
Sweep Trigger Source=Timer, 0.1sec, Disabled
Sweep Point Trigger Source=Remote, Disabled
SYNC Output POSitive
Sweep Running Status Stopped
Store Set-up Name ‘_ _ _ _ _ _ _ _’ (underscores)
Sweep List Name ‘_ _ _ _ _ _ _ _’ (underscores)
Buzzer Status On
Basic Output Parameter Edit Mode Scroll only
Step Edit Increments 10.00000MHz, 10.0dB
RF OUT Power Up Mode Always Off
Reference Socket Disabled
Bus Address 1 (by a manual recall of default set up only)
RS232 Baud Rate 115200 (by a manual recall of default set up only)
IP Configuration *
Static IP Address *
Host Name *
Gateway *
Subnet Mask *
Primary DNS *
DHCL>AUTO>STATIC
192.168.000.000
TGR6000 - <last six characters of MAC address in HEX>
000.000.000.000
255.255.255.255
000.000.000.000
000.000.000.000
Note that the current sweep list is not changed by recalling t he default set-up from the Recall a Setup menu or by use of a *RST remote command. Factor y default settings for t he sweep
list are only recalled via the Delete Sweep List soft key, available whilst editing the current
list (see Editing Sweep and Trim Lists) or via the SWPLISTINI T remot e c om m and.
* By use of the
soft-key on the
menu or by use of the LCI
rear panel switch only.
18
The Utilities menu consists of a list of sub-menus, selectable by soft-keys on the left of the menu.
Store
Pressing the Store soft-key on the UTILITIES menu gives access to the Store Setup
menu, the Store Sweep List menu and the Erase menu.
Store Setup and Store Sweep List Menus
These menus allow instrument setups and sweep lists to be stored in non-volatile memory. The
data is saved to numbered stores. The store number is chosen by scrolling thr ough the
preselected #nn field, where #nn is the store number. An optional name label may be defined
and saved with the data to aid recall identification.
The name may be edited by pressing the Edit soft-key, which will give access to the EDIT SETUP NAME or EDIT SWEEP LIST NAME sub-menus. Characters in the name ar e editable
by scrolling, see Editing Text section.
The Execute soft-key will immediately store the data if the selected store does not already
contain data. If the store already contains data a warning is issued and confirmat ion r equested.
The action will be cancelled by pressing the CANCEL soft-key or the BACK/Escape k ey.
Utilities
Erase Menu
This menu allows complete erasure of all setup and list stor ed data. Confirmation is requested
before the action is completed.
Recall
The Recall soft-key on the UTILITIES menu g ives access t o t he Recall a Setup menu
and the Recall a Sweep List menu.
Recall Setup and Recall Sweep List menus
These menus allow instrument setups and sweep lists to be recalled from non-volatile stor age.
Each setup or list is stored in numbered stores. The stor e num ber is c hosen by scrolling t hr ough
the preselected #nn field, where #nn is the store num ber. As each store is selected its contents
are described as -No Data- if nothing has been stored in it or by a valid name label if it
contains data. Note that a valid name label could be the default _ _ _ _ _ _ _ _ label.
The recall operation is performed by pressing the Execute soft-key. Confirmation is always
required before the operat ion is com plet ed.
Edit List Name
Press the Edit List Name soft-key to call the EDIT SWEEP LIST NAME menu which allows
the name of the current sweep list to be set up, see Editing Text section.
The name entered will be the default name label used if the list is subsequently stored in nonvolatile memory.
Set Edit Mode
This utility allows the user to select the way the basic output frequenc y and level are edited on
the Main menu.
Basic Frequency and Level Setting Mode menu
On this menu the edit mode for out put frequency and level may be selected as Scroll Only ,
Step+Scroll or Step Only by scrolling through the list. See the Editing Num er ic Values
section for how this selection affects the editing of the output freq uency and level.
19
The step sizes are entered on the Set Increment Sizes sub-menu, acces sed by pressing
the Edit Step Sizes soft-key. On this sub-menu, values for frequency and level step sizes
may be entered by direct numeric entry, see Editing Numeric Values section. Note t hat when
using this menu the operation of the ▲ & ▼ and ◄ & ►
the currently selected edit mode, as follows. If the edit mode selected is Scroll Only or
Step+Scroll then a scroll edit cursor is displayed in the frequency and level size fields and the knob scrolls the character underscor ed by the cursor in both cases. If Scroll Only is
selected the ▲ & ▼ arrow keys scroll the underscored character; in the other edit modes they
increment & decrement the least significant character. If Step Only is selected then no scroll
cursor is displayed and increment & decrement of t he least s ig nificant character is perfor m ed by
both the ▲ & ▼arrow keys and the knob.
Ref Socket
The Ref Socket utility selects the f unc t ion of the reference 10MHz REF IN/OUT socket.
The reference socket function is scroll selectable as Input , Output or Disabled .
When the 10MHz REF IN/OUT socket is selected as an input and a 10MHz signal of the
specified amplitude is presented to the socket the internal reference frequency source is
switched automatically from the internal oscillator to t he exter nal sour ce and the front panel EXT
REF indicator is lit. Removal of the external source causes the reference frequency source to
switch back to the internal oscillator. The input impedance is 50Ω.
When the 10MHz REF IN/OUT socket is selected as an out put the internal oscillator is output to
the socket via a 50Ω output buffer.
When not t o be used as an input or output, Disabled ensures no disturbance fr om an open
input and no unwanted 10MHz radiation from an open output.
arrow keys and the knob depends on
Interfaces
The Interfaces soft-key accesses the INTERFACES CONFIG menu, which gives access to
sub menus for setting up various rem ote interface functionality.
The BUS ADDRESS soft-key allows the instrument to be allocated a uniq ue bus addr ess .
The RS232 Baud rate can be adjusted via the RS232 Baud soft-key.
The LAN interface can be set up and status monit or ed via the LAN soft-key.
Further information is given in the Remot e I nt erface Operation section.
Buzzer
This utility allows the internal warning buzzer to be disabled for quiet operation.
Power Up Mode
The Power Up Mode soft-key accesses the RF POWER UP MODE menu which allows the RF
OUT setting at power up to be set to Always OFF (the factory default) , Always ON , or
Same as Power Down.
Version Info
The individual version numbers of the firmware in the internal modules is displayed via this utility.
Calibration
This soft-key accesses the calibration ut ility f or the instrument. Calibration requires specialist
equipment and this facility should not be accessed without reference to the Service Guide, see
Maintenance section.
20
Remote Interface Operation
The instrument can be remotely controlled via its RS232, USB, LAN or optional GPIB inter faces.
USB remote control operates in a similar way to RS232 but via the USB connector. Software
supplied with the instrument sets up the controlling computer t o treat the USB connection as a
virtual COM port. Application software on the computer can then access the instrument via that
COM port.
Remote control using the LAN interf ace is poss ible using the TCP/IP Sockets protocol. The LAN
interface meets the essential req uirements of LXI ( Lan eXtensions for Instrumentation) version
1.2, Class C, but is not fully compliant because, for example, it does not contain a Web server.
Instead, LAN configuration and status is pr ovided via a front panel menu.
All interfaces are live at all times.
Address Selection, RS232 Baud Rate and LAN status
The address, Baud rate and LAN config ur at ion ar e set from the instrument’s front panel as
follows. Press the UT ILITIES key to select the UTILITIES menu, s cr oll down the list of s ub
menus and press the Interfaces soft-k ey to select the INTERFACE CONFIG menu.
The BUS ADDRESS soft-key allows the instrument to be allocated a uniq ue bus addr ess bus.
The address can be decremented and increment ed in t he r ange 1 to 31 inclusive (not 0), with
'wrap-round'. The instrument address capability is strictly requir ed only by the GPIB inter face but
use can be made of the ADDRESS? command over any of the interfaces to easily identify which
instrument is being controlled by a particular COM port (for RS232 or USB) or TCP socket (f or
LAN).
The RS232 Baud rate can be adjusted via the RS232 Baud soft-key.
The LAN interface status can be monitored, and the set-up modified, via the LAN Status
menu which is accessed by pressing the LAN soft-key. The status is given at the top of the
display and will be either NO LAN (LAN not connected), CONFIGURE (instrument attem pting to
make a connection via DHCP, Auto-IP or by assigning a Static IP address), or CONNECTED
(LAN connection made). See the LAN Interf ac e sec t ion for full configuration details.
Remote/Local Operation
At power-on the instrument will be in the local state with the REMOTE indicator off. In this state
all front panel operations are possible. When a command is received the remote state will be
entered and REMOTE will be turned on. In this state the front panel is locked out and r em ote
commands only will be processed.
The instrument may be returned to the local state by pressing the Local key; however, the effect
of this action will only remain until the instrument is addressed again or r ec eives another
character from the int er face, when the remote state will once again be entered. Returning t o
Local by this action, or by the use of the LOCAL command, will keep the settings at their last
remotely set values.
21
1
RI
Passively asserted (+V through 10kΩ)
2
TXD
Transmitted data from instrument
7
DSR
No internal connection
8
DTR
Start Bits: 1
Parity: None
Data Bits: 8
Stop Bits: 1
RS232 Interface
RS232 Interface Connector
The 9-way D-type serial interface connector is located on the instrument r ear panel. The pin
connections are as shown below:
Pin Name Description
3 RXD Received data to instrument
4 CTS
5 GND Signal ground
6 RTS Passively asserted (+V through 10kΩ)
9 CD No internal connection
RS232 Connections
The RS232 interface should be connected to a s tandard PC port using a fully wired 1:1 malefemale cable without any cross-over connections. Alternatively, only pins 2, 3 and 5 need be
connected to the PC, but with links made in the connector at the PC end between pins 1, 4 and 6
and between pins 7 and 8, see diagram.
Baud Rate for this instrument can be set from 1200 to 115200; the other parameters are fixed as
follows:
RS232 Character Set
Because of the need for XO N/ XOFF handshake it is possible to send ASCII coded data only;
binary blocks are not allowed. Bit 7 of ASCII codes is ignored, i.e. assumed to be low. No
distinction is made between upper and lower case characters in command mnemonics and t hey
may be freely mixed. The ASCII codes below 20H (space) are not used. In this manual 20H, etc.
means 20 in hexadecimal. The unit will send XOFF when there are 50 free bytes remaining and
XON when this increases to 100 bytes.
22
USB Interface
The USB interface is a virtual COM port which can be controlled by a PC as if it was a RS232
device. The instrument is supplied with a CD containing an .inf file for the standard Microsoft
drivers available in Windows 2000, XP, Vista and Windows 7; the installation wizard will install the
driver (32-bit or 64-bit) appropriate to the PC’s operating system. Any updates are available via
the TTi website, www.tti-test.com.
Installation of the interface dr iver is achieved by connecting the inst r um ent to a PC via a standard
USB cable. The Windows’ plug and play functions should automatically recognise the addition of
new hardware attached to the USB interface and, if this is the first time the connection has been
made, prompt for t he locat ion of a suitable driver. Provided that the standard Windows prompts
are followed correctly Windows will install the appropriate driver and establish a virtual COM port
within the PC. The number of the new COM port will depend upon the number of co-existing
COM ports within the PC. The virtual COM port can be driven by Windows applications in exactly
the same way as a standard COM port, except that the Baud rate setting of the virtual COM port
is ignored.
The driver will remain installed on the PC so that the establishment of a virtual COM port is done
automatically each time the instrument is connected t o t he PC via USB in the fut ur e.
Further virtual COM ports are created for each additional instr ument connected to the PC via
USB. Each instrument is assigned a separate virtual COM port when it is first connec t ed and t he
same COM port will be assigned each time that instrument is subseq uently connected; the PC
software makes use of the uniq ue code embedded in each instrument to link it to the sam e virtual
COM port irrespective of which physical USB port it is connected to.
Use can also be made of the ADDRESS? command to easily identify which instrument is being
controlled by a particular COM port. Although the addressing capability is ignored in USB
operation the address can still be set and used as an identifier; set each USB-connected
instrument to a different addr ess and s end t he ADDRESS? command from each virtual COM port
to confirm which instrument is connected t o t hat port.
LAN Interface
The LAN interface contains the interfaces and protocols described below. Since it is possible to
misconfigure the LAN interface, making it impossible to communicate with the instrument over
LAN, a LAN Configuration Initialise (LCI) mechanism is pr ovided via a recessed switch on the
rear panel to reset the unit to the f actory default. It is also possible to reset to the factory default
from the front panel by using the LAN RESET soft-key on the IP Configuration menu, see
LAN Connection section for details. The default setting is for the instrument to att em pt to obtain
settings via DHCP if available or, if DHCP times out (30 seconds), via Auto-IP. I n t he very unlikely
event that an Auto-IP address cannot be f ound a static IP address of 192.168.0.100 is assigned.
LAN Connection
To use the LAN interface, the I P addr es s of the unit must be known. There is a LX I Discovery
Tool on the supplied CD-ROM which can be used to display the IP addresses (and other
associated information) of all connect ed devices that c om ply with the VXI -11 discovery protocol.
This tool is a Windows PC application that should be installed and run on the controlling PC with
the unit either connected directly to the PC network connect or or via a router. Connecting via a
router is recommended as this is significantly quicker to assign an IP address; connecting direc t ly
to the PC will begin to assign an IP address only after a 30 second DHCP timeout. There are
also tools for LAN discovery included as part of the National Instr uments Measurement and
Automation Explorer package and the Agilent Vee application.
The unit will, when first powered up, attempt to obtain settings via DHCP if available or, if DHCP
times out (30 seconds), via Auto-IP. I n t he very unlikely event that an Auto-IP address cannot be
found a static IP address of 192.168.0.100 is assigned. The LAN status can be m onit or ed during
this process on the LAN Status menu; to view this menu press the Interfaces soft-key on
23
TCP Port
IP Config
IP Address
Host Name
MAC address
Gateway
Subnet Mask
DNS-Primary
DNS-Secondary
the UTILITIES menu to select the INTERFACE CONFIG menu, then the LAN soft-key to show
the LAN Status menu. The status is given at the top of the display and will be either NO LAN
(LAN connection not made), CONFIGURE (instrument currently attempting to make a connection
via DHCP , Auto-IP or by assigning a Static IP address), or CONNECTED (LAN connection made).
The LAN Status menu also gives access to the following LAN parameters. Most of these will
be set automatically during DHCP or are fixed; where parameters can be modified f r om t he
keyboard this is indicated in the list below:
Fixed at 9221
Selectable to be DHCP/Auto-IP/Static (def ault ) , or Aut o-IP/Static, or Static.
The LAN parameters can also be reset to factory default on this menu
Automatically assigned by DHCP/Auto-IP or user-assigned Stat ic addr ess
User-assigned instrument identifier (default TGR6000 + part MAC address)
Unique MAC address – programmed at manuf ac t ur e
Automatically assigned by DHCP/Auto-IP, e.g. rout er address. Static
gateway address can be user-set.*
Automatically assigned by DHCP/Auto-IP. Static mask can be us er -set.*
Automatically assigned by DHCP/Auto-IP. Static DNS can be user-set.*
Automatically assigned by DHCP/Auto-IP. Static DNS can be user-set.*
* These are parameters of the controller which can be determined by user interrogation if not
established automatically, e.g. in a ‘simple’ one-to-one LAN system without a router.
Note: Modified parameters are only applied after t he power is turned off and back on again.
ICMP Ping Server
The unit contains an ICMP server allowing the instrument to be ‘pinged’ via either its host name
or IP address.
VXI-11 Discovery Protocol
The instrument has very limited support of VX I-11 which is sufficient for the discovery protocol
and no more.
The instrument implements a Sun RPC Port-mapper on TCP port 111 and UDP port 111 as
defined in RPC1183. The calls supported are: NULL, GET PORT and DUMP.
On TCP port 1024 a very simple VXI-11 prot oc ol is implement ed s ufficient only for instrument
discovery. This implements the following calls: CREATE LINK, DEVICE_WRITE, DEVICE_READ
and DESTROY_LINK.
Once a link has been created anything written to the device is ignored and any read from the
device returns the identification string as would be expected from a “*IDN?” of the form
‘Manufacturer,Model,Serial No.,X.xx Y.yy Z.zz’
for example
THURLBY THANDAR,TGR6000,345678,1.00 1.00 1.00
where ‘X.xx’ is the r evision of t he Cont r ol firmware, ‘Y.yy’ is the r evision of t he RF firmware and
‘Z.zz’ is the revision of the interface firmware. Firmware is user field updateable via the USB port.
VISA Resource Name
Because of the limited support f or VX I-11(Discovery Protocol only), the instrument must be
referred to by its raw socket infor m ation when used in software packages which communicate via
a VISA resource name. For example, an instrument at IP address 192.168.1.100 would normally
have a VISA resource name of "TCPIP0: : 192.168.1.100::inst0::INSTR" but for this instrument the
name must be modified to read "TCPIP0::192.168.1.100::9221:: SO CKET " where 9221 is the
TCP port used by this instrument for control and m onit or ing , see below.
24
TCP Sockets
The instrument uses 1 socket on TCP port 9221 for inst r um ent control and monitoring. Text
commands are sent to this port as defined in ‘Remote Commands’ and any replies are returned
via the same port.
LAN Error
If a LAN connection is made but an error is det ected (e.g. the IP address is the same as another
device on the network) then the LAN status menu will show NO LAN until the error is
corrected, see LAN Connection section. If a LAN error occurs; check and corr ect the
configuration of the instrument; a LAN Configurat ion I nitialise (LCI ) m ec hanism is pr ovided via a
recessed switch on the rear panel ( marked LAN RESET) or t he keyboard (see LAN connection
section) to reset the unit to t he factory default. The default sett ing is for the instrument to at tempt
to obtain settings via DHCP if available or, if DHCP times out (30 seconds), via Auto-IP. In t he
very unlikely event that an Auto-IP address cannot be found a stat ic I P addr ess of 192.168.0.100
is assigned. If no physical LAN connection is found at any time t hen the LAN status will continue
to be reported as NO LAN on the the LAN status menu.
GPIB Interface
The GPIB interface 24-way connector is located on the inst rument rear panel. The pin
connections are as specified in IEEE Std. 488.1-1987 and the instrument complies with IEEE Std.
488.1-1987 and IEEE Std. 488.2-1987.
GPIB Subsets
This instrument contains the following IEEE 488.1 subsets:
The IEEE 488.2 UNTERMINATED error (addressed to talk with nothing t o say) is handled as
follows. If the inst rument is addressed to talk and the response formatter is inactive and the input
queue is empty then the
be set in the Standard Event Status Reg ist er, a value of 3 to be placed in the Query Error
Register and the parser to be reset. See t he Status Reporting section f or further information.
UNTERMINATED error is generated. This will cause the Query Error bit to
The IEEE 488.2 INTERRUPTED error is handled as follows. If t he r es ponse formatter is waiting to
send a response message and a
<PROGRAM MESSAGE TERMINATOR> has been read by the parser
or the input queue contains more than one END messag e then the instrument has been
INTERRUPTED and an error is generated. This will cause the Query Error bit to be set in t he
Standard Event Status Regist er, a value of 1 to be placed in the Query Error Regist er and the
response formatter to be reset thus clearing the output queue. The parser will then start parsing
the next
<PROGRAM MESSAGE UNIT> from the input queue. See the Status Reporting section for
further inform at ion.
25
bit 6 =
1
bit 5 =
1
Parallel poll enable
bit 4 =
0
bit 3 =
Sense
sense of the response bit; 0 = low, 1 = high
bit 1 =
?
bit position of the response
bit 0 =
?
The IEEE 488.2 DEADLOCK error is handled as f ollows. If the response formatter is waiting t o
send a response message and the input q ueue becomes full then the instrument ent ers the
DEADLOCK state and an error is generated. This will cause the Query Error bit to be set in the
Standard Event Status Regist er, a value of 2 to be placed in the Query Error Regist er and the
response formatter to be reset thus clearing the output queue. The parser will then start parsing
the next
<PROGRAM MESSAGE UNIT> from the input queue. See the Status Reporting section for
further inform at ion.
GPIB Parallel Poll
Complete parallel poll capabilities are offered on this instrument. The Parallel Poll Enable
Register is set to specify which bits in the Status Byte Register are to be used to form t he
message The Parallel Poll Enable Register is set by the *PRE <nrf> comm and and r ead by the
*PRE? command. The value in the Parallel Poll Enable Register is ANDed with the Status Byte
Register; if the result is zero t hen t he value of
ist local
ist is 0 otherwise the value of ist is 1.
The instrument must also be configured so that the value of
ist can be returned to the controller
during a parallel poll operation. The instrument is configured by the cont r oller sending a Parallel
Poll Configure command (PPC) followed by a Parallel Poll Enable command (PPE). The bits in
the PPE command are shown below:
bit 7 = X don't care
bit 2 = ?
Example. To return the RQS bit (bit 6 of the Status Byte Register) as a 1 when true and a 0 when
false in bit position 1 in response to a parallel poll operation send the following commands
*PRE 64
<pmt>, then PPC followed by 68H (PPE)
The parallel poll response from the instrument will then be 00H if RQS is 0 and 01H if RQ S
is 1.
During parallel poll response the DIO interface lines are resist ively terminated ( passive
termination). This allows multiple devices to share the same response bit position in either wiredAND or wired-OR conf iguration, see IEEE 488.1 for m ore information.
Status Reporting
A separate error and status model is maintained for each int er face. Having a separate model for
each interface ensures that data does not get lost, as many commands e.g. ‘*ESR?’ clear the
contents on read.
Error status is maintained using a set of registers; these are described in the f ollowing
paragraphs and shown on the Status Model at the end of this section.
Standard Event Status and Standard Event Status Enable Registers
These two registers are implemented as r equired by the IEEE Std. 488.2.
Any bits set in the Standard Event Status Register which corres pond t o bits set in t he Standard
Event Status Enable Register will cause the ESB bit to be set in the Status Byte Register.
26
The Standard Event Status Reg ist er is read and cleared by the *ESR? command. The Standard
Event Status Enable register is set by the *ESE <nrf> command and read by the *ESE?
command.
It is a bit field where each bit has the following signif icanc e.
Bit 7: Power On. Set when power is first applied to the instrument .
Bit 6: Not used.
Bit 5: Command Error. Set when a syntax type error is detected in a com m and from the bus.
The parser is reset and parsing cont inues at the next byte in the input stream
Bit 4: Execution Error. Set when an error is encountered while attempt ing to execute a
completely parsed command. The appropriate er r or num ber will be reported in the
Execution Error Register, see Error Messages sec t ion
Bit 3: Not used.
Bit 2: Query Error. Set when a query occurs. The appropriate error number will be reported
in the Query Error Register, see Query Error Register section.
Bit 1: Not used.
Bit 0: Operation Complete: Set in response t o the ‘*OPC’ command.
Execution Error Register
This register contains a number representing the last error encountered over the current
interface. The Execution Error Register is read and cleared using the ‘EER?’ command. On
power up this register is set to 0 for all inter face instances.
Error messages have the following meaning:
0: No error encountered
120: Numeric value sent was out of range.
123: Internal error reported when preparing Flash for erase or write. Probable hardware fault.
124: Internal error reported when writing to Flash. Pr obable hardware fault.
125: Internal error reported when erasing Flash. Probable har dware fault.
126: An error has been encountered in the data of a set-up store
127: An er r or has been enc ount er ed in t he data of a List Sweep store
128: No valid data in the requested set-up store or List Sweep store.
134: Running the sweep is inhibited because the calculated output level with TRIM added is
>+7dBm or <-110dBm at point nnnn in the sweep. (nnnn is shown briefly in the display)
135: An attempt to change a paramet er value is illegal because sweep is running.
136: An attempt to change a TRIM paramet er is illegal becaus e TRIM is currently active.
Note that for some of the above errors a self-explanatory message is also shown briefly
in the display.
Status Byte Register and Service Request Enable Register
These two registers are implemented as r equired by the IEEE Std. 488.2.
Any bits set in the Status Byte Register which correspond to bits set in the Service Request
Enable Register will cause the RQS/MSS bit to be set in the Status Byte Register, thus
generating a Service Request on the bus.
The Status Byte Register is read either by the *STB? command, which will return MSS in bit 6, or
by a Serial Poll which will return RQS in bit 6. The Service Request Enable register is set by the
*SRE <nrf> command and read by the *SRE? command.
27
Register correspond to bits set in the Standard Event Status Enable Register.
Bit 3 -
Not used.
Bit 7 - Not used.
Bit 6 - RQS/MSS. This bit, as defined by IEEE Std. 488.2, contains both the Requesting Service
message and the Master Status Summary message. RQS is returned in response to a
Serial Poll and MSS is returned in response to the *STB? command.
Bit 5 -
Bit 4 - MAV. The Message Available Bit. This will be set when the instrument has a response
Bit 2 - Not used.
Bit 1 - Not used.
Bit 0 - Not used.
ESB. The Event Status Bit. This bit is set if any bits set in the Standard Event Status
message formatt ed and r eady to send to the controller. The bit will be cleared after the
Response Message Terminator has been sent.
Status Model
28
Status Byte Register
= 0
Query Error Register
= 0
Power-on and Remote Operation Default Set tings
The following instrument status values are set at power on:
Service Request Enable Register † = 0
Standard Event Status Register = 128 (pon bit set)
Standard Event Status Enable Register † = 0
Execution Error Register = 0
Parallel Poll Enable Register † = 0
† Registers marked thus are s pecific to the GPIB section of the inst rument and are of limited use
via other interfaces.
The instrument will be in local state with the front panel controls active.
The instrument parameters at power-on ar e t he s am e as at las t s witch off with the exception of
the RF OUT status. By default this is always off at power on but the user may change this from
the front panel to be always on, or the same at power on as at power off, see Ut ilities sect ion.
The *RST (reset) interface command resets the instrument to the Rem ot e O peration Default
settings. The Remote Operation Default settings are the same as the Factory Def ault settings
with the exception that *RST does not change any interface setting s ( address, Baud rate, LAN
settings) or the contents of the sweep list. See Factory Default Sett ings section for furt her
details.
29
Remote Commands
Remote Command Format
RS232 input to the instrument is buffered in a 256 byte input queue which is filled, under interrupt,
in a manner transparent to all other instrument operations. The instrument will send XOFF when
approximately 200 characters are in the queue. XO N will be sent when approximately 100 free
spaces become available in the queue after XOFF was sent. This queue contains raw (un-parsed)
data which is taken, by the parser, as required. Commands (and queries) are executed in order
and the parser will not start a new command until any previous command or query is complete.
RS232 responses to commands or queries are sent immediately; there is no output queue.
USB input conforms with USB 2.0 Full Speed.
Commands must be sent as specified in the com m ands list and m us t be terminated with the
command terminator code 0AH (Line Feed, LF). Com m ands m ay be sent in groups with individual
commands separated from each other by the code 3BH (;). The group must be terminated with
command terminator 0AH (Line Feed, LF).
Responses from the instrument to the controller are sent as specified in the com m ands list. Each
response is terminated by a
followed by 0AH (Line Feed, LF).
<WHITE SPACE> is defined as character codes 00H to 20H inclusive.
<WHITE SPACE> is ignored except in command identifiers. e.g. '* C LS' is not equivalent to '*CLS'.
The high bit of all characters is ignored.
The commands are case insensitive.
<RESPONSE MESSAGE TERMINATOR> which is 0DH (Carriag e Return, CR)
GPIB Remote Command Format
GPIB input to the instrument is buff er ed in a 256 byte input queue which is filled, under interrupt, in
a manner transparent to all other instrum ent oper ations. The queue contains raw (un-parsed) data
which is taken, by the parser, as required. Commands (and queries) are executed in order and the
parser will not start a new command until any previous command or query is complete. There is no
output queue which means that the response formatter will wait, indefinitely if necessary, until the
instrument is addressed to talk and the com plet e r espons e m ess age has been sent, before the
parser is allowed to start the next command in the input queue.
Commands are sent as
or more
<PROGRAM MESSAGE UNIT> elements separated by <PROGRAM MESSAGE UNIT SEPARATOR>
elements.
A
<PROGRAM MESSAGE UNIT> is any of the commands in the remote commands list.
<PROGRAM MESSAGE UNIT SEPARATOR> is the semi-colon character ';' (3BH) .
A
<PROGRAM MESSAGES> are separated by <PROGRAM MESSAGE TERMINATOR> elements which may be
any of the following:
NL The new line character (0AH)
NL^END The new line character with the END message
^END The END message with the last character of the m essage
Responses from the instrument to the controller are sent as
MESSAGE>
TERMINATOR>
<RESPONSE MESSAGE TERMINATOR> is the new line character with the END message NL^END.
A
consists of one <RESPONSE MESSAGE UNIT> followed by a <RESPONSE MESSAGE
.
Each query produces a specific
the remote commands list.
<PROGRAM MESSAGES> by the controller, each m es sage consisting of zero
<RESPONSE MESSAGES>. A <RESPONSE
<RESPONSE MESSAGE> which is listed along with the command in
<WHITE SPACE> is ignored except in command identifiers. e.g. '* C LS' is not equivalent to '*CLS'.
<WHITE SPACE> is defined as character codes 00H to 20H inclusive with the exception of the NL
character (0AH).
The high bit of all characters is ignored. The commands are case insensitive.
30
Command List
This section lists all commands and queries implemented in this instrument. The commands are
listed in alphabetical order within the function groups.
Note that there are no dependent parameters, coupled parameters, overlapping commands,
expression program data elements or compound command pr ogram headers; each command is
completely executed before the next command is started. All commands are sequential and the
operation complete message is generat ed im m ediat ely after execution in all cases.
The following nomenclature is used:
<rmt>
<cpd> <CHARACTER PROGRAM DATA>, i.e. a short mnemonic or string such as ON or
<nrf> A number in any f or m at . e.g. 12, 12.00, 1.2 e1 and 120 e-1 ar e all accept ed as
<nr1> A number with no f r actional part, i.e. an integer.
The commands which begin with a ∗ are those specified by IEEE Std. 488.2 as Common
commands. All will function when used on the other interfaces but s om e ar e of little use.
<RESPONSE MESSAGE TERMINATOR>
OFF.
the number 12. Any number, when received, is converted to the required
precision consistent with the use then rounded up to obtain the value of the
command.
Output Parameters
FREQ <nrf> Set the output frequenc y to <nrf> MHz
UVLEV <nrf> Set the output level to <nrf> in uV
MVLEV <nrf> Set the output level to <nrf> in mV
DBMLEV <nrf> Set the output level to <nrf> in dBm
DBUVLEV <nrf> Set the output level to <nrf> in dBuV
RFON Switch on RF output
RFOFF Switch off RF output
RFOUT <cpd> Set the output to < O N> or <OFF> (alternative command to RFON & RFOFF)
LIST Sweep Settings
SWPLISTSET
<nrf><csv ascii data>
SWPPOINTSET
<nrf>,<nrf>,<nrf>,<nrf>
SWPCOPY Copies the current Step Sweep points to the Sweep List (overwrites old list)
SWPLISTINIT Initialises the Sweep List to a single point (6000MHz, -110dBm, 10ms dwell)
Downloads a complete Sweep List, overwriting the existing list. <nrf> is the
number of points in the list and the following <csv ascii data> consists of
,<nrf>,<nrf>,<nrf> f or eac h point in the list where these ar e frequency
(MHz), level (dBm)and dwell (ms) respectively.
Sets the values of a specified point in the Sweep List where the <nrf>
values are point number, frequency (MHz), level (dBm), dwell (ms). If the
point number is greater than the highest point number of the existing Sweep
List the intervening points will be filled with the same values as the original
highest point.
31
STARTFREQ <nrf>
Set Step Sweep start frequency to <nrf>MHz
STOPFREQ <nrf>
Set Step Sweep stop frequency to <nrf>MHz
STARTLEV <nrf>
Set Step Sweep start level to <nrf>dBm
STOPLEV <nrf>
Set Step Sweep stop level to <nrf>dBm
SWPDWELL <nrf>
Set Step Sweep dwell time to <nrf>ms
SWPNUMPTS <nr f>
Set the number of points in the Step Sweep to <nrf>
SWPSCALE <cpd>
Sets the sweep scale shape to <LIN> or <LOG>
SWPT YPE < c pd >
Sets the sweep type to <STEP> or <LIST>
SWP_T RGTIME <nrf>
Sets the trigger timer value to <nr f> seconds
<POINT_TRIG><rmt>
and level (dBm) respectvely
STEP Sweep Parameters
General Sweep Settings and Control
SWPPARAM <cpd> Sets t he paramet ers to be swept to <FREQ>, <LEV> or <ALL>
SWPREPEAT <cpd> Sets the sweep repeat mode to <ON> or <OFF>
SWPDI RN < c p d > Sets the sweep direction to <UP> or <DOWN>
SWPDISP <cpd> Sets the sweep display update to <ON or < O FF>
SWPSYNC <cpd > Sets the SYNC OUT active state to <POS> or <NEG>
SWP_TRGSRC <cpd> Sets the sweep trigger source to <MAN>, <REM>, <EXT+> or <EXT->
SWPPT _TRGSRC <cpd> Sets the point trigger source t o < MAN>, <REM>, <EXT+> or <EXT->
SWP_TRG_EN <cpd> Sets the sweep trigger enable to <ON> or < OFF>
SWPPT _TRG_EN <cpd> Sets the point trig ger enable to <ON> or <OFF>
SWPRUN Runs the sweep
SWPSTOP Stops the sweep
SWPRUNSTAT? Returns the sweep running status as <RUN> or <STOP> <rmt>
SWPTRGSTAT?
SWP_PT? Returns the cur r ent s weep point number as < nr 1> < r m t>
Returns the sweep trigger status as <RUN>, < SWP_TRG?> or
TRIM List Settings and Control
TRIMLISTSET
<nrf><csv ascii data>
TL <nrf><csv ascii data> ‘Shorthand’ version of TRIMLISTSET
TRIMPOINTSET
<nrf>,<nrf>,<nrf>
TP
<nrf>,<nrf>,<nrf>
TRIMON Enables the TRIM function
TRIMOFF Disables the TRIM function
Downloads a complete TRIM List, overwriting the existing list. <nrf> is the
number of points in the list and the following <csv ascii data> consists of
,<nrf>,<nrf> for each point in t he list where thes e ar e frequency (MHz)
Sets the values of the specified point in the TRIM List where the <nrf>
values are point number (1-100), fr equency (MHz), level (dBm).
‘Shorthand’ version of TRIMPOINTSET
32
SAVEL IST <nr1>
Save List to List store <nr1>
BUZZ <cpd>
Set the internal buzzer to <ON> or <OFF>.
ESE <nrf>
because of the sequential nature of all operations.
format. The syntax of the response is <nr1><rmt>.
System Commands
∗RST
SAVESETUP <nr1> Save Set-up to set-up store <nr1>
RCLSETUP <nr1> Recall Set-up from Set -up store <nr1>
RCLLIST <nr1> Recall List from List store <nr1>
LOCAL Returns the instr um ent to local operation and unlocks the keyboard.
ADDRESS? Returns the bus address of the instrum ent; This is the address used by GPIB
PWRUPMODE <c p d> Sets the RF OUT status at power up to <ON>, <OFF> or <LAST>
REFSKT <cpd> Set the reference socket to < I N>, <OUT> or <OFF>.
EDITMODE <cpd> Sets the frequency & level edit mode to <SCROLL>, <ST EP> or <BOTH>
Resets the instrument to default set tings with the exception of all remote
interface settings.
or may be used as a general identifier over the other int er faces. The
response format is <nr1> < r m t > .
Status Commands
EER? Query and clear Execution Error Register. The response format is
<nr1><rmt>.
QER? Query and clear Quer y Error Register. The response format is <nr1><rmt>.
∗CLS
∗
∗ESE?
∗ESR?
Clear Status. Clears the Standard Event Status Register, Q uery Error
Register and Execution Error Register. This indirectly clears the Status Byte
Register.
Set the Standard Event Status Enable Reg ist er to the value of <nrf>.
Returns the value in the Standard Event Status Enable Reg ist er in < nr 1>
numeric format. The syntax of the response is < nr 1> < r m t>.
Returns the value in the Standard Event Status Register in <nr1> numeric
format. The register is then cleared. The syntax of the response is
<nr1><rmt>.
∗IST?
∗OPC
∗OPC?
∗PRE <nrf>
∗PRE?
∗SRE <nrf>
∗SRE?
∗STB?
∗WAI
33
Returns ist local message as defined by IEEE Std. 488.2. The syntax of the
response is 0<rmt>, if the local message is false or 1<rmt> , if the local
message is true.
Sets the Operation Complete bit (bit 0) in the Standard Event Status Register.
This will happen immediately the command is executed because of the
sequential nature of all operations.
Query Operation Complete status. The syntax of the response is 1<rm t > .
The response will be available immediately the command is executed
Set the Parallel Poll Enable Register to the value <nrf>.
Returns the value in the Parallel Poll Enable Register in <nr1> numeric
Set the Service Request Enable Register to <nrf>.
Returns the value of the Service Request Enable Register in <nr 1> numeric
format. The syntax of the response is <nr1>< r mt>.
Returns the value of the Status Byte Register in <nr1> numeric format. The
syntax of the response is <nr1><rmt>.
Wait for Operat ion Complete true. As all commands are completely executed
before the next is started this command takes no additional action.
Miscellaneous Commands
∗IDN?
∗TST?
∗TRG
See Service Guide for details of calibration specific comm ands .
Returns the instrument identif icat ion. The exact response is det er m ined by the
instrument configurat ion and is of the form <NAME>,<model>, 0, < version> < r m t >
where <NAME> is the manufacturer ’s name, <model> defines the type of
instrument and <version> is the r evision level of the sof t ware installed.
The generator self-test returns the response 0 <rm t> if OK or an error code
<nr1><rmt> if an er ror has occurred.
Equivalent to the action of generat ing a trigger with the front panel TRIG key.
34
The Manufacturers or their ag ents overseas will provide repair for any unit developing a fault.
Where owner wish to undertake their own maintenance work , t his s hould only be done by skilled
personnel in conjunction with the service guide which may be purchased directly from the
Manufacturers or their agents overseas.
Calibration
The Manufacturers or their ag ents overseas can pr ovide calibrat ion suppor t . Calibrat ion r equires
specialist equipment and this utility should only be accessed by skilled engineers in conjunction
with the Service Guide.
Cleaning
If the instrument r equires cleaning use a cloth that is only lightly dampened with water or a mild
detergent.
WARNI NG! TO AVOID ELECTRIC SHOCK, OR DAMAGE TO THE INSTRUMENT, NEVER
ALLOW WATER TO GET INSIDE THE CASE. TO AVOID DAMAGE TO THE CASE NEVER
CLEAN WITH SOLVENTS.
Maintenance
Web link
For the latest version of this instruct ion m anual, I VI dr iver and any applicable firm ware updates
go to http://www.tti-test.com/support-tti.htm