Bk 894 895 Programming Manual User

User Manual: Bk 894 895 Programming Manual 894_895_programming_manual en-us programming_manuals s

Open the PDF directly: View PDF .
Page Count: 45

Download
Open PDF In Browser	View PDF

Model: 894/895
500 KHz/1 MHz LCR Meter
PROGRAMMING MANUAL

Table of Contents
Remote Operation ........................................................................................ 6
1.1 Interface Configuration ....................................................................................................... 6
RS-232C ................................................................................................................................... 6
USB (USBCDC - Virtual COM ).................................................................................................. 7
USBTMC................................................................................................................................... 7
LAN (Ethernet) ......................................................................................................................... 7
GPIB (895 Only) ....................................................................................................................... 8

Command Reference .................................................................................... 9
2.1 IEEE488.2 Common Commands.......................................................................................... 9
*RST......................................................................................................................................... 9
*TRG ........................................................................................................................................ 9
*CLS ......................................................................................................................................... 9
*IDN?....................................................................................................................................... 9
*TST? ..................................................................................................................................... 10
*ESE ....................................................................................................................................... 10
*SRE....................................................................................................................................... 10
*ESR....................................................................................................................................... 11
*STB? ..................................................................................................................................... 11
*OPC ...................................................................................................................................... 12
2.2 Subsystem commands for 894/895 .................................................................................. 12
2.3 DISPlay subsystem commands.......................................................................................... 13
DISP:PAGE ............................................................................................................................. 14
DISP:LINE ............................................................................................................................... 14
DISPlay:RFONt  ........................................................................................................... 15
2.4 FREQuency subsystem commands ................................................................................... 15
FREQ ...................................................................................................................................... 15
2.5 VOLTage subsystem commands ....................................................................................... 16
VOLT ...................................................................................................................................... 16
CURRent ................................................................................................................................ 16
2.6 AMPLitude Subsystem Commands ................................................................................... 16
AMPL ..................................................................................................................................... 16

2.7 Output RESister subsystem commands ............................................................................ 17
ORES ...................................................................................................................................... 17
2.8 OUTPut subsystem commands ......................................................................................... 17
OUTPut:DC:ISOLation ............................................................................................................ 17
2.9 BIAS subsystem commands .............................................................................................. 17
BIAS:STATe ............................................................................................................................ 18
BIAS:VOLTAGE ....................................................................................................................... 18
BIAS:CURRent ........................................................................................................................ 19
2.10 FUNCtion subsystem commands ...................................................................................... 19
FUNCtion:IMPedance ............................................................................................................ 21
FUNCtion:IMPedance:RANGe ............................................................................................... 21
FUNCtion:IMPedance:RANGe:AUTO ..................................................................................... 22
FUNCtion:Source MONitor:VAC ............................................................................................ 22
FUNCtion:SMONitor:IAC ....................................................................................................... 22
FUNCtion:DEV:MODE ...................................................................................................... 22
FUNCtion:DEV:REFerence ................................................................................... 23
FUNCtion:DEV:REFerence:FILL ........................................................................................ 23
2.11 LIST subsystem commands ............................................................................................... 24
LIST:FREQuency ..................................................................................................................... 24
LIST:VOLTage ........................................................................................................................ 25
This ........................................................................................................................................ 25
LIST:CURRent ......................................................................................................................... 25
This ........................................................................................................................................ 25
LIST:BIAS:VOLTage ................................................................................................................ 26
This ........................................................................................................................................ 26
LIST:BIAS:CURRent ................................................................................................................ 26
This ........................................................................................................................................ 26
LIST:MODE............................................................................................................................. 27
LIST:BAND ............................................................................................................................. 27
LIST:CLEar:ALL ....................................................................................................................... 27
2.12 APERture subsystem commands ...................................................................................... 28
APERture ............................................................................................................................... 28
2.13 TRIGger subsystem commands ......................................................................................... 28

TRIGger.................................................................................................................................. 29
TRIGger:SOURce .................................................................................................................... 29
TRIGger:DELay....................................................................................................................... 29
2.14 FETCh? Subsystem Commands ......................................................................................... 30
FETCh..................................................................................................................................... 30
2.15 CORRection subsystem commands .................................................................................. 32
CORRection:LENGth .............................................................................................................. 33
CORRection:METHod............................................................................................................. 34
CORRection:OPEN ................................................................................................................. 34
CORRection:OPEN:STATe ...................................................................................................... 35
CORRection:SHORt:STATe ..................................................................................................... 35
CORRection:LOAD:STATe ...................................................................................................... 35
The CORRection:LOAD:TYPE.................................................................................................. 35
CORRection:SPOT:STATe ................................................................................................. 36
CORRection:SPOT:FREQuency ......................................................................................... 37
CORRection:SPOT:OPEN .................................................................................................. 37
CORRection:SPOT:SHORt ................................................................................................ 37
CORRection:SPOT:LOAD:STANdard................................................................................. 37
CORRection:USE:DATA? ........................................................................................................ 38
CORRection:CLEar ................................................................................................................. 39
2.16 COMParator subsystem commands ................................................................................. 39
COMParator[STATe] .............................................................................................................. 40
COMParator:MODE............................................................................................................... 40
COMParator:TOLerance:NOMinal ........................................................................................ 40
COMParator:TOLerance:BIN ........................................................................................... 41
COMParator:SEQuence:BIN .................................................................................................. 41
COMParator:SecondaryLIMit ................................................................................................ 41
COMParator:Auxiliary BIN .................................................................................................... 42
COMParator:SWAP ............................................................................................................... 42
COMParator:BIN:CLEar ......................................................................................................... 42
COMParator:BIN:COUNt ....................................................................................................... 43
COMParator:BIN:COUNt:DATA? ........................................................................................... 43
COMParator:BIN:COUNt:CLEar ............................................................................................. 43

2.17 Mass MEMory subsystem commands .............................................................................. 43
MMEMory:LOAD:STATe ........................................................................................................ 44
MMEMory:STORe:STATe....................................................................................................... 44

Remote Operation
The instrument comes with RS232C, USB (virtual COM), LAN, and GPIB (895 only) interfaces for
remote control. This chapter will describe how users can remotely operate the instrument and
use SCPI (Standard Commands for Programmable Instruments) commands over any one of
these remote interfaces.

1.1 Interface Configuration
RS-232C
For RS-232C connectivity, refer to the diagram below for pinout information. The RS-232C is
labeled in the rear panel and it is a female DB-9 interface. Use a crossover cable where pins 2
and 3 are reversed.
5

4
9

PIN
1
2
3
4
5
6
7
8
9

3
8

2
7

1
6

Description
Transmit Data
Receive Data
GND
CTS
RTS
-

Parameter

Description

Baud rate

9600, 19200, 28800, 38400, 48000, 57600, and 115200.

Parity and
data bit
Stop bit
Flow control

None/8 bits, Even/8 bits, Odd/8 bits
1, 2
None
Table 1 - RS-232C Settings

The RS-232C interface does not support hardware flow control (only
transmit, receive, and ground pins are used). The programmer should be
aware of this limitation and notice the command process time of the LCR
meter. If the remote commands are sent too fast to the LCR meter, the
internal buffer may overrun and cause a communication error. Therefore,
adding a delay between commands is necessary to allow time for the
meter to process.

USB (USBCDC - Virtual COM )
The standard USB port is a virtual COM port that can be used for remote communication. There
are no settings in the menu system for USB configuration. The serial settings are the same as
the settings for RS-232C.
The USB interface does not support hardware flow control (only transmit,
receive, and ground pins are used). The programmer should be aware of
this limitation and notice the command process time of the LCR meter. If
the remote commands are sent too fast to the LCR meter, the internal
buffer may overrun and cause a communication error. Therefore, adding a
delay between commands is necessary to allow time for the meter to
process.

USBTMC
USB The standard USB port is a USBTMC-compliant port that can be used for remote
communication. There are no additional settings in the menu system for USB configuration. The
only requirement is that NI-VISA is installed on the computer, which can be downloaded at
http://www.ni.com/visa/.

LAN (Ethernet)
The 894/895 can also be controlled via LAN interface. Refer to the user manual for setup
information.

GPIB (895 Only)
The GPIB address of the LCR meter can be configured from 1-31. To communicate via GPIB,
connect a GPIB cable to the GPIB port at the back of the LCR meter.

Command Reference
The SCPI interface enables users to operate the power supply through a computer or a terminal
equipped with IEEE-488.2 GPIB, RS-232, or USB interface.
The following table lists all of the numerical parameters:
Symbol
NR1
NR2
NR3
NL
^END

Response Formats
integer, e.g.:123
fix-point number, e.g.: 12.3
floating-point number, e.g.: 12.3E+5
Carriage return key, ASCII code: 10
EOI signal in IEEE-488. EOI gets asserted
on the GPIB interface.

2.1 IEEE488.2 Common Commands
*RST
The *RST command resets the instrument.
Command syntax: *RST

*TRG
The *TRG command triggers the measurement and then sends the result to the output buffer.
Command syntax: *TRG

*CLS
The *CLS command clears the standard event status register and the service request status
register.
Command syntax: *CLS

*IDN?
The *IDN? query returns the instrument’s ID.
Query syntax: *IDN?
Return format: ,,,, 
Where,
 Name of Manufacturer ( B&K Precision)

Instrument Model (895)


XX-XXX-XXXXX

Firmware Version (VER1.0.0)
 Hardware Version (Hardware Ver XX.X)

*TST?
The *TST? query executes an internal self test and returns the test result as the sum of all
existing errors codes. If there are no error 894/895 returns 0.
Query syntax: *TST?
Return format: 

*ESE
The *ESE (standard Event Status Enable command) command sets each open bit of the
standard event status register. This command returns setups of each open bit for the standard
event status permission register.
Command syntax: *ESE
Query syntax: *ESE?
Return format: 
Where,  NR1 format：decimal number for each bit of operation status register.
Descriptions for each byte of the standard event status register are shown as follows:
Bit number
7
6
5
4
3
2
1
0

Description
Power On(PON) Bit
User Request(URQ) Bit
Command Error(EME) Bit
Execution Error(EXE) Bit
Device Dependent Error(DDE) Bit
Query Error(QYE) Bit
Request Control(RQC) Bit
Operation Complete(OPC) Bit

*SRE
The *SRE （Service Request Enable command）command sets each open bit of the service
status byte register. This command returns the current setups for each open bit of the status
byte permission register.
Command syntax: *SRE
Query syntax: *SRE?
Return format: 

Where,  NR1 format: decimal expression for each permission bit of the status byte
register.
Descriptions for each byte of the status byte register are shown as follows:
Bit number
7
6
5
4
3-0

Description
Operation Status Register Summary Bit
RQS(Request Service) Bit
Standard Event Status Register Summary Bit
MAV(Message Available) Bit
Always 0(zero):

*ESR
The *ESR? query returns the contents of the standard event status register.
Query syntax: *ESR?
Return format: 
Where,  NR1 format: decimal expression for contents of the standard event status
register.
Descriptions for each bit of the standard event status register
Bit number
7
6
5
4
3
2
1
0

Description
Power On(PON) Bit
User Request(URQ) Bit
Command Error(EME) Bit
Execution Error(EXE) Bit
Device Dependent Error(DDE) Bit
Query Error(QYE) Bit
Request Control(RQC) Bit
Operation Complete(OPC) Bit

*STB?
The *STB? query returns contents of the standard service status byte register. The execution of
this command will not affect contents of the standard status byte register.
Query syntax: *STB?
Return format: 
Where,  NR1 format: decimal expression for contents of the standard status byte
register.
Descriptions for each bit of the standard status byte register:

Bit number
7
6
5
4
3-0

Description
Operation Status Register Summary Bit
RQS(Request Service) Bit
Standard Event Status Register Summary Bit
MAV(Message Available) Bit
Always 0(zero)

*OPC
The *OPC command equals to set the OPC bit of the standard event status register when
894/895 finishes all parameter measurements. Ever since all pending operations have been
completed, this command will inform the instrument to add a ASCII number “1” (number: 49)
into the output buffer.
Command syntax: *OPC
For example: OUTPUT 717; “*OPC” Sets the OPC bit of the instrument when the last command
is done.
Query syntax: *OPC?
Return format: 1

2.2 Subsystem commands for 894/895
Find below a list of the subsystem commands for the LCR meter. For SCPI commands, there is a
short and long form. In the list below, find the short version in bold and in capital letters, the
long version of the command is the entire word.

Short Version

Long Version

DISP

DISPlay

FREQ

FREQuency

VOLT

VOLTage

CURR

CURRent

AMPL

AMPLitude

ORES

Output RESistance

OUTP

OUTPut

BIAS

BIAS

FUNC

FUNCtion

LIST

LIST

APER

APERture

TRIG

TRIGger

FETC

FETCh?

CORR

CORRection

COMP

COMParator

MMEM

Mass MEMory

2.3 DISPlay subsystem commands
The command tree for the Display Subsystem is as follows:

DISP:PAGE
DISPlay subsystem commands are used to configure the display pages of the instrument.

Command Syntax DISPlay:PAGE
Query syntax DISPlay:PAGE?
Query returns the current page.
Return format 
Example 1 DISP:PAGE MEAS
Set the display page as the LCR measurement
display page.
Example 2 DISP:PAGE?
Returns: MEAS DISP
Where  can be set as the following items:
Page name
Function
MEASurement Set the display page as the LCR measurement
display.
BNUMber

Set the display page as the bin number display.

BCOunt

Set the display page as the bin count display.

LIST

Set the display page as the list sweep display.

MSETup

Set the display page as the measurement display.

CSETup

Set the display page as the correction setup.

LTABle

Set the display page as the limit table setup.

LSETup

Set the display page as the list sweep setup.

SYSTem

Set the display page as the system setup page.

FLISt

Set the display page as the file list page.

DISP:LINE
The DISP:LINE command is used to enter comments containing up to 16 ASCII characters in the
comment field. The string “BK89xATS” is displayed if this is empty.

Command Syntax DISPlay:LINE ””
Query syntax DISPlay:LINE?

Return format Return format: 
Example 1 DISP:LINE “ResistanceValues”
Assigns a representative name to the string.
Example 2 DISP:LINE?
Returns:
ResistanceValues
Where  can be an ASCII character string (maximum number is 16).

DISPlay:RFONt 
The ResultFONt command is used to set the current font of the measurement result on the
 PAGE.
Command Syntax DISPlay:RFONt 
Query syntax DISPlay:ResultFONt?
Return format Return format: 
Where  can be any of the following options:
Item
Function
LARGe

Use large character to display the measurement
result, 12ms/meas.

TINY

Use tiny character to display the measurement
result, 5ms/meas.

OFF

Measurement result will not be displayed but can
be read from the bus.

2.4 FREQuency subsystem commands
FREQ
Sets the measurement frequency of the instrument.
Returns the measurement frequency being used to do measurements.
Command Syntax
Query syntax
Return format
Example

FREQuency 
FREQuency?

FREQ 1MHZ

Where  can be: NR1, NR2 or NR3 (followed by Hz, kHz, MHz), MIN or MAX.
MIN= Set the measurement frequency as 20Hz.
MAX= Set the measurement frequency as 500 KHz for the 894 or 1 MHz for the 895.

2.5 VOLTage subsystem commands
VOLT
The VOLTage subsystem commands are used to set and query the measurement voltage level.
Command Syntax
Query syntax
Return format
Example

VOLTage 
VOLTage?

VOLT 0.500 V
Sets measurement voltage level to 500 mV.

Where  can be: NR1, NR2 or NR3 data format followed by V.
MIN= Set the measurement voltage as 5mV.
MAX= Set the measurement voltage as 2V.
CURRent subsystem commands

CURRent
The CURRent subsystem commands are used to set and query the current level for the
measurement signal.
Command Syntax
Query syntax
Return format
Example 1

CURRent 
CURRent?

CURR 10MA
Sets the current level for the measurement
signal to 10 mA.

Where  NR1, NR2 or NR3 data format followed by MA.
MIN
Set the measurement current as 50μA.
MAX
Set the measurement current as 66.67mA.
MIN and MAX value changes depending on impedance range.

2.6 AMPLitude Subsystem Commands
AMPL
The AMPLitude subsystem commands are mainly used to set the auto level control (ALC)
function.
Command Syntax AMPL:ALC 
Query syntax AMPLitude:ALC?
Return format 

Example 1 AMPL:ALC ON
Turn function Auto Level Control (ALC) on.
Where  can be: 0 or OFF, or 1 or ON

2.7 Output RESister subsystem commands
ORES
The Output RESister subsystem commands are used to set the output impedance of the LCR meter.
Command Syntax
Query syntax
Return format
Example 1

ORESister 
ORESister?

ORES 30
Set the output internal resistance is 30 OHM.

Where  can be either 30, 50 or 100.

2.8 OUTPut subsystem commands
OUTPut:DC:ISOLation
The OUTPut subsystem commands are used to set the Bias Current Isolation function of the
50mA/5V DC bias source as ON or OFF.
Command Syntax OUTPut:DC:ISOLation 
Query syntax OUTPut:DC:ISOLation?
Return format 
Example 1 OUTP:DC:ISOL 1
Turns the Bias Current Isolation function on.
Example OUTP:DC:ISOL OFF
Turns the Bias Current Isolation function off.
Where  can be: 0 or OFF, or 1 or ON.

2.9 BIAS subsystem commands
The BIAS subsystem command are used to set the status of the DC Bias Function (on/off), bias
voltage, and bias current.
Refer to the image below for command tree:

BIAS:STATe
This command is used to turn the DC BIAS Function on or off.
Command Syntax
Query syntax
Return format
Example 1

BIAS:STATe 
Query syntax: BIAS:STATe?

BIAS:STATe 0
Turns the DC BIAS Function off.

Where  can be: 0 or OFF, or 1 or ON.

BIAS:VOLTAGE
This command is used to set the internal DC bias voltage.
Command Syntax
Query syntax
Return format
Example 1

BIAS:VOLTage 
BIAS:VOLTage?

BIAS:VOLT ON
Turn the internal DC bias voltage on.

Where  can be: NR1, NR2 or NR3 data format followed by V.
MIN= Set the measurement voltage as +/-5mV.

MAX= Set the measurement voltage as +/-2V.

BIAS:CURRent
Command Syntax
Query syntax
Return format
Example 1

BIAS:CURRent 
BIAS:CURRent?

BIAS:CURR 40MA

Where  can be: NR1, NR2 or NR3 data format followed by MA.
MIN= Set the measurement voltage as +/- 0 mA.
MAX= Set the measurement voltage as +/-50 mA.

2.10 FUNCtion subsystem commands
The FUNCtion subsystem commands are used to set measurement functions, range,
current/voltage monitor ON/OFF, deviation display mode, and nominal setting.
Refer to the image in the next page for the command tree of the FUNCtion Subsytem.

FUNCtion:IMPedance
The FUNCtion:IMPedance command is used to set and select the measurement function.
Command Syntax
Query syntax
Return format
Example 1

FUNCTion:IMPedance 
FUNCTion:IMPedance?

FUNC:IMP RX
Set the function as R-X.

Where  is one of the selections below:
Function
CPD
CPQ
CPG
CPRP
CSD
CSQ
CSRS
LPQ
LPD
LPG

Mode
Set the function as Cp-D
Set the function as Cp-Q
Set the function as Cp-G
Set the function as Cp-Rp
Set the function as Cs-D
Set the function as Cs-Q
Set the function as Cs-Rs
Set the function as Lp-Q
Set the function as Lp-D
Set the function as Lp-G

Function
LPRP
LSD
LSQ
LSRS
RX
ZTD
ZTR
GB
YTD
YTR

Mode
Set the function as Lp-Rp
Set the function as Ls-D
Set the function as Ls-Q
Set the function as Ls-Rs
Set the function as R-X
Set the function as Z-θ◦
Set the function as Z-θr
Set the function as G-B
Set the function as Y-θ◦
Set the function as Y-θr

FUNCtion:IMPedance:RANGe
Selects the impedance measurement range. This command turns the auto range function OFF
when is used.
Command Syntax
Query syntax
Return format
Example 1

FUNCTion:IMPedance:RANGe 
FUNCTion:IMPedance:RANGe?

FUNC:IMP:RANG 1KOHM
Set the value of the range to 1kOHM

Where,  can be the impedance of the DUT or NR1, NR2 or NR3 data format
followed by OHM or KOHM.
10
300
10000

30
1000
30000

100
3000
100000

FUNCtion:IMPedance:RANGe:AUTO
The FUNCtion:IMPedance:RANGe:AUTO command is used to set the automatic range selection
status.
Command Syntax
Query syntax
Return format
Example 1

FUNCTion:IMPedance:RANGe:AUTO 
FUNCTion:IMPedance:RANGe?

FUNC:IMP:RANG:AUTO ON
Set the automatic range as ON.

Where  can be: 0 or OFF, or 1 or ON.

FUNCtion:Source MONitor:VAC
The FUNCtion:Source MONitor:VAC command is used to set the voltage monitor ON or OFF.
Command Syntax
Query syntax
Return format
Example 1

FUNCtion:SMONitor:VAC 
FUNCtion:SMONitor:VAC?

FUNC:SMON:VAC ON
Set the voltage monitor as ON.

Where  can be: 0 or OFF, or 1 or ON.

FUNCtion:SMONitor:IAC
The FUNCtion:SMONitor:IAC command enables the AC current-level monitor function.
Command Syntax FUNC:SMONitor:IAC 
Query syntax FUNCtion:SMONitor:IAC?
Return format FUNCtion:SMONitior:IAC?
Example 1 

FUNCtion:DEV:MODE

The FUNCtion:DEV:MODE command is used to set and query the deviation measurement
mode.
Command Syntax FUNCtion:DEV:MODE
Query syntax Query syntax: FUNCtion:DEV:MODE?
Return format 
Example 1 FUNC:DEV1:MODE ABS
Where  can be:
ABSolute
Absolute value deviation display
PERCent
Percent deviation display
OFF
Real value display
When n=1 the deviation mode is being set to the nominal value of primary parameter.
When n=2 the deviation mode is being set to the nomial value of the secondary
parameter.

FUNCtion:DEV:REFerence
This command is used to set the nominal value of the deviation.
Command Syntax FUNCtion:DEV:REFerence
Query syntax FUNCtion:DEV:REFerence?
Return format 
Example 1 FUNC:DEV1:REF 10
Where,  can be 1 or 2.
When n=1, equal to the nominal value of primary parameter.
When n=2, is equal to the nominal value of the secondary parameter.
Where,  is NR1, NR2 or NR3 data format.

FUNCtion:DEV:REFerence:FILL
This command is used to set the nominal value of the deviation. This command directs the
instrument to make a test and then copies the results of the primary and the secondary
parameters as the nominal values of the deviation.
Command Syntax FUNCtion:DEV:REFerence:FILL
Query syntax N/A
Example 1 FUNC:DEV1:REF:FILL
Where,  can be 1 or 2.
When n=1, equal to the nominal value of primary parameter.
When n=2, is equal to the nominal value of the secondary parameter.

2.11 LIST subsystem commands
The LIST subsystem commands are mainly used to set the list sweep function, sweep points,
sweep mode, sweep limits.

LIST:FREQuency
This command is used to clear the original sweep points and set the frequencies of a new list
frequency sweep points.
Command Syntax LIST:FREQuency [, *]
Query syntax LIST:FREQuency?
Return format , [,*]
Example LIST:FREQ 133, 1KHZ, 1MHZ, 4E3
Set the frequency of the sweep point 1 as 133 Hz
Set the frequency of the sweep point 2 as 1KHZ
Set the frequency of the sweep point 3 as 1MHZ
Set the frequency of the sweep point 4 as 4KHZ.

* 201 sweep points, at most, can be set.
Where,  is NR1, NR2 or NR3 data format.
 is 20HZ to 500KHZ (894), 20HZ to 1MHZ (895), if a value outside this range is
sent, that specific sweep point will be ignored and it will generate errors when querying
this command.
The units of frequency, Hz, could be used after the frequency value, as shown in the
example above. HZ (hertz) is the default unit.

LIST:VOLTage
This command is used to clear the voltage of each sweep point by overwriting the set values
with the new values sent and clearing the points that are not set in the new list.
Command Syntax LIST:VOLTage [, *]
Query syntax LIST:VOLTage?
Return format [, *]
Example 1 LIST:VOLT\s5E-3,\s2E-2,\s0.035V,\s200MV\n
Set the voltage of the sweep point 1 as 5 mV
Set the voltage of the sweep point 2 as 20 mV
Set the voltage of the sweep point 3 as 35 mV
Set the voltage of the sweep point 4 as 200mV.

* 201 sweep points, at most, can be set.
Where,  is NR1, NR2 or NR3 data format.
 should be set from 5mV to 2V, if a value outside this range is sent, that specific
sweep point will be ignored and it will generate errors when querying this command.
The unit of volts (V) or milli Volts (MV) could be used after the voltage value, as shown
in the example above. Volts (V) is the default unit.

LIST:CURRent
This command is used to clear the current of each sweep point by overwriting the set values
with the new values sent and clearing the points that are not set in the new list.
Command Syntax LIST:CURRent[, *]
Query syntax LIST:CURRent?
Return format [, *]
Example 1 LIST:CURR 5E-3, 20, 0.015A, 10MA
Set the voltage of the sweep point 1 as 5 mA.
Set the voltage of the sweep point 2 as 20 mA.
Set the voltage of the sweep point 3 as 15 mA.
Set the voltage of the sweep point 4 as 10 mA.

* 201 sweep points, at most, can be set.
Where,  is NR1, NR2 or NR3 data format.
 should be set from 50μA to 20mA, if a value outside this range is sent, that
specific sweep point will be ignored and it will generate errors when querying this
command.
The unit of volts (A) or milli Amps (MAV could be used after the current value, as shown
in the example above. Volts (V) is the default unit.

LIST:BIAS:VOLTage
This command is used to clear the DC Bias Voltage of each sweep point by overwriting the set
values with the new values sent and clearing the points that are not set in the new list.
Command Syntax LIST:BIAS:VOLTage[, *]
Query syntax LIST:BIAS:VOLTage?
Return format [, *]
Example 1 LIST:BIAS:VOLT 1E-4, 2E-2, 5, 4V
Set the voltage of the sweep point 1 as 0.1 mV.
Set the voltage of the sweep point 2 as 20 mV.
Set the voltage of the sweep point 3 as 5 V.
Set the voltage of the sweep point 4 as -4 V.
* 201 sweep points, at most, can be set.
Where,  is NR1, NR2 or NR3 data format.
 should be set from -5 V to 5 V, if a value outside this range is sent, that specific
sweep point will be ignored and it will generate errors when querying this command.
The unit of volts (V) or milli Volts (MV) could be used after the voltage value, as shown
in the example above. Volts (V) is the default unit.

LIST:BIAS:CURRent
This command is used to clear the DC Bias Current of each sweep point by overwriting the set
values with the new values sent and clearing the points that are not set in the new list.
Command Syntax
Query syntax
Return format
Example 1

LIST:BIAS:CURRent[, *]
LIST:BIAS:CURRent?
[, *]
LIST:BIAS:CURR 1E-4, 2E-2, 5mA, -2mA.
Set the voltage of the sweep point 1 as 100 uA.
Set the voltage of the sweep point 2 as 20 mA.
Set the voltage of the sweep point 3 as 5 mA.

Set the voltage of the sweep point 4 as -2 mA.
* 201 sweep points, at most, can be set.
Where,  is NR1, NR2 or NR3 data format.
 should be set from -50 mA to +50 mA, if a value outside this range is sent, that
specific sweep point will be ignored and it will generate errors when querying this
command.
The unit of volts (A) or milli Amps (MAV could be used after the current value, as shown
in the example above. Volts (V) is the default unit.

LIST:MODE
This command is used to set the list sweep mode.
Command Syntax LIST:MODE 
Query syntax LIST:MODE?
Return format 
Example 1 LIST:MODE SEQ
Where,  can be:
SEQuence: Sequential mode.
STEPped: Single step mode. One step per trigger signal.

LIST:BAND
This command is used to set the limits of list sweep table.
Command Syntax LIST:BAND[,,]
Query syntax LIST:BAND?
Return format , , 
Example 1 LIST:BAND3 OFF
Where:
 can be 1 to 201 (NR1 format): sweep points on the nth line
 can be A or B:
A= Compare the primary parameter of the test results with the high and the low limits.
B= Compare the secondary parameter of the test results with the high and the low
limits.
OFF No comparison
 NR1, NR2 or NR3 data format, low limit of the sweep point on the n th line.
 NR1, NR2 or NR3 data format, high limit of the sweep point on the n th line.

LIST:CLEar:ALL

This command is used to clear the setting data of all sweep points.
Command Syntax LIST:CLEAR:ALL
Query syntax N/A
Return format N/A
Example 1 LIST:CLEAR:ALL

2.12 APERture subsystem commands
The APERture subsystem commands are used to set the measurement speed, averaging times
used in measurement.

APERture
This command is used to set the measurement speed and the averaging times used during
measurements.
Command Syntax APERture  [,]
Query syntax APERture?
Return format , 
Example 1 APER MED, 55
Sets the speed to MEDIUM, and averaging times
to 55. This means that the meter will take 55
measurements at medium speed and present
the average as the result.

2.13 TRIGger subsystem commands
The TRIGger subsystem commands are used to set the instrument trigger source, trigger delay
and trigger measurement.
Command tree:

TRIGger
This command is used to send a trigger signal to the LCR meter and start a test.
Command syntax: TRIGger[:IMMediate]
For example:
Command Syntax
Query syntax
Return format
Example 1

TRIGger[:IMMediate]
N/A
N/A
WrtCmd(“TRIG”)

TRIGger:SOURce
This command is used to set the trigger source mode.
Command Syntax TRIGger:SOURce 
Query syntax TRIGger:SOURce?
Return format 
Example 1 TRIG:SOUR BUS
Where:
INTernal The default trigger mode.
EXTernal Triggered by HANDLER interface.
BUS
Triggered by RS232C interface or GPIB interface
HOLD
Triggered by pressing TRIGGER.

TRIGger:DELay

This command is used to set the delay time after triggering.
Command Syntax
Query syntax
Return format
Example 1

TRIGger:DELay 
TRIGger:DELay?

TRIG:DEL 5s
Set the trigger delay to 5 seconds

Where  is in the NR1, NR2 or NR3 data format and a valid range from 0 to
60s with 1ms as the resolution.
MIN
Set the delay time as 0s.
MAX
Set the delay time as 60s.

2.14 FETCh? Subsystem Commands
The FETCh? subsystem commands are used to direct the 894/895 to fetch the last to input a
measurement result.

FETCh
This command queries the last measurement of the from the output buffer.
Command Syntax N/A
Query syntax FETCh[:IMP]?
Return format ,,,
Example 1 FETC?
Queries the last measurement on the output
buffer.
Where:

 = primary measurement data.
 = secondary measurement data.
The return format will be displayed as follows:
SN.NNNNNeSNN , SN.NNNNNeSNN ,
SN




NL^END

 New line

Where:
S = +/N= 0 to 9
e = Exponent (1.03e-3 = 0.00103)

 return format uses 2 ASCII characters, plus or minus and the value which as
the following table details can be a value between -1 and +4.
 will display the measurement status with the following values:
 format is SP, where “S” is as described above and “P” valid values are from 0 to
4.
Status
S

Description

N
0
+
+
+
+

1
0
1
2
3
4

No data in buffer memory
Normal measurement data
Analog LCR unbalance
A/D converter is not working.
Signal source is over loading.
Constant voltage cannot be adjusted.

When the COMPARE function is enabled:
The LCR will not return the following string:
SN.NNNNNeSNN ,
SN.NNNNNeSNN




,

SN


,

SN

NL^END

 New line

 
Bin data is only available and displayed only when compare function is set as ON.
The data displays the sorting results of the displayed bin, shown below.
Data
0
+1
+2
+3
+4

Sort result
Out of tolerance
Bin 1
Bin 2
Bin 3
Bin 4

+5
+6
+7
+8
+9
+10

Bin 5
Bin 6
Bin 7
Bin 8
Bin 9
Auxiliary bin

2.15 CORRection subsystem commands
The CORRection subsystem commands are used to set and select the correction function:
OPEN, SHORT, LOAD.
Command tree:

CORRection:LENGth
This command is used to the correction factor for the cable length.
Command Syntax CORRection:LENGth
Query syntax CORRection:LENGth?
Return format 

Example 1 CORR:LENG 1M
Set the correction factor for a cable of 1 meter.
Where  is 0, 1, 2 or 4 followed by M.

CORRection:METHod
This command is used to set the correction mode to single or multi-channel.
Command Syntax CORRection:METHod 
Query syntax CORRection:METHod?
Return format 
Example 1 CORR:METH SING
Where  can be:
SINGle Set or return single channel mode.
MULTi Set or return multi-channel mode.

CORRection:OPEN
This command is used to execute an open correction for the following preset test points.
Command Syntax
Query syntax
Return format
Example 1

CORRection:OPEN
N/A
N/A
CORR:OPEN

Hz
20
25
30

Hz
100
120
150

kHz
1.0
1.2
1.5

kHz
10
12
15

kHz
100
120
150

40
50
60
80

200
250
300
400
500
600
800

2.0
2.5
3.0
4.0
5.0
6.0
8.0

20
25
30
40
50
60
80

200
250
300
400
500
600*
800*

MHz
1*
*895 only

CORRection:OPEN:STATe
This command is used to set the open correction ON or OFF.
Command Syntax CORRection:OPEN:STATe 
Query syntax CORRection:OPEN:STATe?
Return format 
Example 1 CORR:OPEN:STAT ON
Turns the Open Correction function ON.
Where,  can be:
ON = 1
OFF = 0

CORRection:SHORt:STATe
This command is used to set the Short Correction ON or OFF.
Command Syntax CORRection:SHORt:STATe 
Query syntax CORRection:SHORt:STATe?
Return format 
Example 1 CORR:SHORt:STAT OFF
Turns the Short Correction function OFF.
Where,  can be:
ON = 1
OFF = 0

CORRection:LOAD:STATe
This command is used to set the Load Correction ON or OFF.
Command Syntax CORRection:LOAD:STATe 
Query syntax CORRection:LOAD:STATe?
Return format 
Example 1 CORR:LOADt:STAT OFF
Turns the Load Correction function OFF.
Where,  can be:
ON = 1
OFF = 0

The CORRection:LOAD:TYPE
This command is used to set the test parameter type.

Command Syntax
Query syntax
Return format
Example 1

CORRection:LOAD:TYPE 
CORRection:LOAD:TYPE?

CORR:LOAD:TYPE CPD
Sets the Correction Load Type to use the
capacitance in parallel mode, and dissipation
factor to be used during the correction.

Where,  can be:
TYPE FUNCTION

TYPE Function

CPD

Set the function as Cp-D

LPRP

Set the function as Lp-Rp

CPQ

Set the function as Cp-Q

LSD

Set the function as Ls-D

CPG

Set the function as Cp-G

LSQ

Set the function as Ls-Q

CPRP Set the function as Cp-Rp

LSRS

Set the function as Ls-Rs

CSD

Set the function as Cs-D

RX

Set the function as R-X

CSQ

Set the function as Cs-Q

ZTD

Set the function as Z-θ◦

CSRS

Set the function as Cs-Rs

ZTR

Set the function as Z-θr

LPQ

Set the function as Lp-Q

GB

Set the function as G-B

LPD

Set the function as Lp-D

YTD

Set the function as Y-θ◦

LPG

Set the function as Lp-G

YTR

Set the function as Y-θr

CORRection:SPOT:STATe
This command is used to set and query the state of the correction spot. It lets the user turn on
or off specific points during the spot correction.
Command Syntax CORRection:SPOT :STATe 
Query syntax CORRection:SPOT :STATe?
Return format 
Example 1 CORR:SPOT 11:STAT ON
Turn the Spot Correction of spot #11 on.
Where,
: 0 or OFF, or 1 or ON
: 0 or OFF, or 1 or ON.

CORRection:SPOT:FREQuency
This command is used to set the frequency of the correction spots.
Command Syntax
Query syntax
Return format
Example 1

CORRection:SPOT:FREQeuency
CORRection:SPOT:FREQuency?

CORR:SPOT 15:FREQ 2KHZ
Set the Spot Correction in spot 15 to 2 Khz.

Where,
: NR1, NR2 or NR3 data format followed by HZ, KHZ and MHZ. Range is 20 Hz to
500 kHz (894) 20 Hz to 1 MHz (895).
: One of the 201 correction spots.

CORRection:SPOT:OPEN
This command is used to execute open correction for the current correction spot.
Command Syntax CORRection:SPOT :OPEN
Query syntax N/A
Return format N/A
Example 1 CORR:SPOT 1:OPEN
Executes an open correction in spot #1.
Where,
: One of the 201 correction spots.

CORRection:SPOT:SHORt
This command is used to execute short correction for the current correction spot.
Command Syntax CORRection:SPOT :SHORT
Query syntax N/A
Return format N/A
Example 1 CORR:SPOT 10:SHORT
Executes a short correction in spot #10.
Where,
: One of the 201 correction spots.

CORRection:SPOT:LOAD:STANdard
This command is used to set the standard reference of the current correction spot.

Command Syntax CORRection:SPOT :LOAD:STANdard 

Query syntax CORRection:SPOT :LOAD:STANdard?
Return format 
Example 1 CORR:SPOT1:LOAD:STAN 100.7, 0.0002
Set the standard reference value for spot #1, to
100.7 for the primary , and 0.0002 for the
secondary parameter.
Where,
: One of the 201 correction spots.
 can be NR1, NR2 or NR3 data format and taken as the standard reference of
the primary parameter.
 can be NR1, NR2 or NR3 data format and taken as the standard reference of
the secondary parameter.

CORRection:USE:DATA?
This query returns the OPEN/SHORT/LOAD correction measurement data of 201 correction
spots.
Command Syntax
Query syntax
Return format
Example 1

N/A
CORRection:USE:DATA? 
See below.
CORRection:USE:DATA?

,,,,,,
,,,,,,
,,,,,,
…
Where,
 is NR3 data format and the primary open correction data at the correction
spot n.
 is NR3 data format and the secondary open correction data at correction
spot n.
 is NR3 data format and the primary short correction data at correction spot
n.
 is NR3 data format and the secondary short correction data at correction
spot n.
 is NR3 data format and the primary load correction data at correction spot n.

 is NR3 data format and the secondary load correction data at correction spot
n.

CORRection:CLEar
This command is used to clear the correction data of all the correction spots.
Command Syntax CORRection:CLEar
Query syntax N/A
Return format N/A
Example 1 CORRection:CLEar
Clears the correction data.

2.16 COMParator subsystem commands
The COMParataor subsystem commands are used to set the bin comparator function including
ON/OFF setting, and Limit table setting.
Command tree:

COMParator[STATe]
This command is used to set the comparator function ON or OFF.
Command Syntax COMParator 
Query syntax COMParator ?
Return format .
Example 1 COMP ON
Turns the comparator ON.
Where,
: 0 or OFF, or 1 or ON

COMParator:MODE
This command is used to set the comparator mode.
Command Syntax COMParator:MODE 
Query syntax COMParator:MODE?
Return format <
Example 1 COM:MODE ATOL
Set the comparator mode to absolute tolerance
mode.
Where,
ATOLerance means absolute tolerance mode.
PTOLerance means proportional tolerance mode.
SEQuence means sequential tolerance mode.

COMParator:TOLerance:NOMinal
This command is used to set the nominal value (this function is valid only when the limit mode
is set as deviation mode).
Command Syntax COMParator:TOLerance:NOMinal
Query syntax COMParator:TOLerance:NOMinal?
Return format 
Example 1 COMP:TOL:NOM 100E-12
Sets the tolerance nominal value, when the limit
mode is set as deviation mode, to 100E-12.
 is a nominal value in NR1, NR2 or NR3 data format.

COMParator:TOLerance:BIN
This command is used to set the high and the low limits of each bin (this function is valid only
when the limit mode is set as deviation mode).
The COMParator:TOLeance:BIN?
Command Syntax COMParator:TOLerance:BIN
Query syntax COMParator:TOLeance:BIN?
Return format 
Example 1 COMP:TOL:BIN2 -10,10
Set the high value of bin 2 to 10.
Set the low value of bin 2 to -10
Where,
 is the bin number from 1 to 9.
 is the low limit in NR1, NR2 or NR3 data format.
 is the high limit in NR1, NR2 or NR3 data format.
The low limit should be smaller than the high limit or an error will be issued.

COMParator:SEQuence:BIN
This command is used to set the high and the low limits of sequential mode (this function is
valid only when the limit mode is set as the sequential mode).
Command Syntax COMParator:SEQuence:BIN ,
, , …, 
Query syntax COMParator:SEQuence:BIN?
Return format , , , …,
Example 1 COMP:SEQ:BIN 10, 20, 30, 40, 50
Where,
 is the low limit of BIN 1 in NR1, NR2 or NR3 data format.
 is the high limit of BIN1 in NR1, NR2 or NR3 data format.
 is the high limit of BINn (the maximum of n is 9) in NR1, NR2 or NR3
data format.
The low limit should be smaller than the high limit or an error will be issued.

COMParator:SecondaryLIMit
This command is used to set the high and the low limits of the secondary parameter.
Command Syntax COMParator:SLIMit ,
Query syntax COMParator:SLIMit?

Return format  is the low limit in NR1, NR2 or NR3 data format.
 is the high limit in NR1, NR2 or NR3 data format.
The low limit should be smaller than the high limit or an error will be issued.

COMParator:Auxiliary BIN
This command is used to set the auxiliary bin as ON or OFF.
Command Syntax
Query syntax
Return format
Example 1

COMParator:AuxiliaryBIN 
COMParator:Auxiliary BIN?

COMP:ABIN ON
Turns the Auxiliary bin on.

Where,
: 0 or OFF, or 1 or ON.

COMParator:SWAP
This command is used to set the swap mode ON or OFF. For example: the original function
parameter is Cp-D, after the SWAP mode is set as ON, the function parameter will be changed
as D-Cp. In this case, the limits from BIN1 to BIN9 become the high and the low limits of D, the
original seconday limits become that of Cp. If this function is off, it will not affect the original
measurements.
Command Syntax COMParator:SWAP 
Query syntax COMParator:SWAP?
Return format 
Example 1 COMP:SWAP ON”
Turn the Swap function on.

COMParator:BIN:CLEar
This command is used to clear all limits on Limit Table setup page.
Command Syntax COMParator:BIN:CLEar
Query syntax N/A
Return format N/A

Example 1 COMP:BIN:CLE
Clear the limits on the Limit Table.

COMParator:BIN:COUNt
This command is used to set the bin count function as ON or OFF.
Command Syntax COMParator:BIN:COUNt 
Query syntax COMParator:BIN:COUNt?
Return format 
Example 1 COMP:BIN:COUN ON
Sets the count of the bins on.
Where,
: 0 or OFF, or 1 or ON.

COMParator:BIN:COUNt:DATA?
Command Syntax N/A
Query syntax COMParator:BIN:COUNt:DATA?
Return format , , …, ,
, 

Where,
 is the count result of BIN1-9, in NR1 data format.
 is the count result of the OUT OF BIN, in NR1 data format.
 is the count result of the auxiliary bin, in NR1 data format.

COMParator:BIN:COUNt:CLEar
This command is used to clear all bin count results.
Command Syntax COMParator:BIN:COUNt:CLEar
Query syntax N/A
Return format N/A
Example 1 COMP:BIN:COUN:CLE
Clears all the bin count results.

2.17 Mass MEMory subsystem commands
The Mass MEMory subsystem commands are used for storing and loading files saved in the LCR
meter.
Command tree:

MMEMory:LOAD:STATe
This command is used to load an existing file.
Command Syntax
Query syntax
Return format
Example 1

MMEMory:LOAD:STATe
N/A
N/A
MMEM:LOAD:STAT 1

Where,
 is the file number ranging from 0 to 39 (NR1).

MMEMory:STORe:STATe
This command is used to store the current settings of the LCR meter to an internal file.
Command Syntax MMEMory:STOR:STATe, “”
Query syntax N/A
Return format N/A
Example 1 MMEM:STOR:STAT 1, “Resistor meas”
Saves current settings to memory 1, with the
name “Resistor meas”. If there is no
Where,
 is the file number ranging from 0 to 39 (NR1).
 can be ASCII character string (maximum length is 16). If  is no assigned
a name, the default file name will be given to the settings file.

22820 Savi Ranch Parkway
Yorba Linda, CA92887
www.bkprecision.com

© 2017 B&K Precision Corp.

v022117



File Type                       : PDF
File Type Extension             : pdf
MIME Type                       : application/pdf
PDF Version                     : 1.5
Linearized                      : No
Page Count                      : 45
Language                        : en-US
Tagged PDF                      : Yes
Author                          : Jeremy Lo
Creator                         : Microsoft® Word 2013
Create Date                     : 2017:02:21 11:37:37-08:00
Modify Date                     : 2017:02:21 11:37:37-08:00
Producer                        : Microsoft® Word 2013