Here are some helpful hints n tips for various test instruments and how to communicate with them
[any GPIB/Comms addresses detailed are examples only]

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Interfaces:
GPIBDevice_NINET 	- NI boards
GPIBDevice_ADLink 	- ADLink boards
GPIBDevice_gpib488 	- Keithley, MCC and older NI boards
VisaDevice 		- Generic interface (GPIB,USB etc.) via Visa
COM Port 		- Generic serial ports
Prologix		- Prologix USB and Ethernet
NI-GPIB-232CT-A	- Serial
Kofen's PoE Ethernet - Prologix compatible

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Default Checkboxes/settings:
	STB mask = 16
	Enable Polling = Checked
	Abort Errors = Checked
	Isolate data to right of leading two Chars = Unchecked
	Isolate data to left of Char: "N" = Unchecked
	/1000 = unchecked
	Terminator = Unchecked
	Send Blocking = Unchecked
	EOI Incapable Instruments = Unchecked
	Delay Op.(ms) = 1
	Timeout (ms) = 5000

Default PDVS2mini tab defaults:
	Init Step Size (bits) = 5
	Init. Accuracy = 0.00010
	Step Size Final (Bits) = 1
	Final Accuracy = 0.00001
	Comms Delay (mS) = 125
	Low/Shut = 13.0/12.5Vdc
	C.Enable = YES
	O/L mA = 400mA
	Full mA = 70mA
	DegC =
	3458A Serial Number =
	User/Company = 
	Serial No. =
	Serial = OK
	Soak = 168hrs
	DC Inp. = OK
	Chg/Dis. = OK
	
3458A CalRam/Settings Pre-Run Commands:
	END ALWAYS
	NPLC 0
	NRDGS 1
	TRIG HOLD
	QFORMAT NUM

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Moving your configuration data to a new PC:

Prior to WinGPIB V3.178:
  On your old PC go to
  C:\Users\USERNAME\AppData\Local\Microsoft\PDVS2_GPIB.exe_Url_somegreatlonglistoflettersnumbers\1.0.0.0\
  and in there is a file called user.config
  Copy that file out and put it in the similarly named folder in your new PC.
  Note: The large folder name will be different.

WinGPIB V3.178 onwards:
  Hit EXPORT PROFILES button which saves to ProfilesData.dat
  Copy the ProfilesData.dat file to \WinGPIBdata on the new PC
  On new PC hit IMPORT PROFILES which loads ProfilesData.dat

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Formulating the Address:
GPIB:			GPIB[board]::address::INSTR
Example:		GPIB1::22::INSTR

USB:			USB[board]::manufacturer ID::model code::serial number::INSTR
Example:		USB0::0x2A8D::0x1301::MY12345678::INSTR

TCPIP:			TCPIP[board]::IP address[::LAN device name]::INSTR
Example:		TCPIP0::192.168.1.139::inst0::INSTR

Serial:			COMport,baud,parity,databits,stopbits [,newline]
Example:		COM4:115200,N,8,1,CRLF

Prologix Serial:	GPIBaddress:COM[port number]:[baud]
Example:		5:COM7:115200
Note: No drivers etc are required.

Prologix Ethernet:	address:[IP Address]:[Port]
Example:		5:192.168.1.208:1234
Note: Use Prologix netfinder.exe app to set IP address etc. No drivers etc are required.

NI-GPIB-232CT-A Serial:		address:COM[port number]:[baud]
Example:	22:COM9:9600
Note: No drivers etc are required.

Kofen's PoE Ethernet GPIB adaptor:
Prologix Ethernet:	address:[IP Address]:[Port]
Example:		5:192.168.1.208:1234

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NOTES:
AR488v3 Arduino Pro Micro version should report as 'Arduino Leonardo' in Windows
AR488 Arduino Nano version should report as 'USB-SERIAL CH340' in Windows

Arithmetic:
Use this text entry to apply an arithmetic function on the incoming data. Examples:
/1000
*1.2
-100
+25.5

Symbols:
kΩ

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Terminator Info:
CR carriage return……..moves to column zero without advancing paper
LF line feed…… advances paper without returning to column zero
CRLF……. does both the above
\r = CR = 0x0D = 13
\n = LF = 0x0A = 10 = newline

MAV not set errors:
MAV = Message AVailable, i.e. there is a response in the output buffer of the device.
So, example error: "Poll timeout: MAV not set, status byte=4"
Check your device manual to see where the MAV is coded in the status byte and set the MAV mask accordingly.
The standard value is 16 and is set by default in WinGPIB.
If it still doesn't work the only option is to disable polling altogether although you then might experience
delays if you have more than one device connected via GPIB.
The MAV is usually bit 4 of the status STB byte. So, with STB Mask set to 16 means that bit 4 status is
communicated.

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GPIB-USB-HS it works very well via NI-Visa.
Undocumented feature:  in 32bit apps it can be controlled without NI-Visa too if you select ADLink as interface.
This is because the NI driver also installs the gpib32.dll (for compatibility with older software I guess) and
ADLink relies on this dll. WinGPIB is currently 32bit....:-)

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DEVICE = 3458A:
GPIB1::22::INSTR

END ALWAYS
NRDGS 1
NPLC 100

TARM SGL

Uses E5810A:-
For GPIB address in the app so the Remote GPIB entry status in Keysight Connection Expert, i.e. GPIB1::22:INST

Notes:
DISP OFF	Blanks the VFD except for dashes across the middle.
DISP OFF ""	Blanks the VFD completely

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DEVICE = 3457A
GPIB1::5::INSTR

Use the "HP3457A Enable 7th Digit" checkbox to gain another DP which is only available via GPIB.

END ALWAYS
NDIG 6
NRDGS 1
NPLC 100

TARM SGL

Non GPIB stuff:
To access 7th digit (7.5 digit mode) on the DMM do normal then read 7th digit separately
Blue, 8,  2 x Down Arrow......that shows the 7th digit register.

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DEVICE = Keithley 2015THD
GPIB1::24::INSTR (top)
GPIB1::23::INSTR (bottom)

FUNC 'VOLT:DC'
VOLT:DC:NPLC 10
:INIT:CONT OFF

:READ?

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DEVICE = Keithley 2001
GPIB1::27::INSTR

"Isolate data to left of Char:" checked.
Set the Char to "N"

:SENS:VOLT:DC:DIG 8.5;		Set for 8.5 digits on display and GPIB
:SENS:VOLT:DC:NPLC 10;		Max = 10
:DISP:WIND:TEXT:DATA "Ian Johnston";STAT ON;		write text to main display
:DISP:WIND2:TEXT:DATA "Ian Johnston";STAT ON;		write text to lower display
INIT:CONT OFF		turn off to avoid INIT error -213 i.e. INIT IGNORED
:READ?

Cal ram extract/decode:
:CAL:PROT:DATA?
The response is an ASCII string of 99 numbers separated by commas.

Other:
:FORM:ELEM READ  (as pre run)
MEAS?  (At run)

Calibration - Sample commands:
Power up and presse recessed CAL button.
:CAL:PROT:DC:ZERO		4-wire short across inputs
:CAL:PROT:DC:LOW 1.9999978	2-wire 2Vdc Cal
:CAL:PROT:DC:HIGH		2-wire 20Vdc Cal
:CAL:PROT:DATE '05/13/22'
:CAL:PROT:SAVE			Save Cal Constants

Quick 10NPLC:
:SENS:VOLT:DC:DIG 8.5;
:SENS:VOLT:DC:NPLC 10;
:SENS:VOLT:DC:AVER:STAT 0
:SENS:VOLT:DC:AVER:COUN 10
INIT:CONT OFF

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DEVICE = Racal-Dana 1991
GPIB2::25::INSTR
Rear switch set to Talk only disabled
See page 81 of Racal-Dana_1991-1992-IM.pdf

"Enable Polling" unchecked.
"Terminator" unchecked.
"No EOI" unchecked.
"Isolate data to right of leading two Chars" checked (the returned data from the 1991 uncludes 2 letter function codes ahead of the data)

Note: It appears the 1991 needs an input running for GPIB to return 'any' data.

DCL	device clear - reverts to power-up state
SPD	serial poll disable - any reply will be output message format
SPE	serial poll enable - any reply will send status byte
GTL	go to local
GET	group execute trigger (takes a measurement)
CK	check

Measurement codes
FA	Freq A
FC	Freq C (1992 only)
PA	Period A
TI	Time interval
TA	Total A by B
PH	Phase of A relative to B
RA	Ration A/B
RC	Ration A/C (1992 only)

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DEVICE = Fluke 8842A
GPIB1::26::INSTR
VDC 10V mode

*
F1

R3

Info:
From web: Initialise the meter:-
*F1 R0 S0 T0

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DEVICE = Keysight 34461A
LAN connection

TCPIP0::192.168.1.139::inst0::INSTR

*RST
CALC:SMO:RESP MED
VOLT:DC:NPLC 10

*RST
CONF:CURR:DC
CURR:DC:NPLC 1

:READ?

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DEVICE = Keysight 34461A
USB connection

USB0::manufacturer ID::model code::serial number::INSTR
Get the details from Keysight Connection Expert.
Example:-
USB0::0x2A8D::0x1301::MY12345678::INSTR

*RST
CALC:SMO:RESP MED
VOLT:DC:NPLC 10

:READ?

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DEVICE = Agilent 34401A
Serial comms via COM1 on PC

There are two options, as follows:

................................
OPTION 1:-

COM1:9600,N,8,1,CRLF
INTERFACE = Com port

Set up the 34401A (via DMM front panel) for SERIAL, 8-bit, No Parity.

As a PRE-RUN or a SEND ASYNC command, SYST:REM must be sent first to put 34401A in remote mode
after power up of the meter.

Sample selection of 34401A commands:
CONF:VOLT:DC
CONF:VOLT:AC
CONF:VOLT:DC 10,0.00001			function:range:resolution
CONF:VOLT:DC 10,MIN			equivalent of 100 NPLC

NPLC is set automatically when you set the resolution:
Fast 6 digit = 10 PLC
Slow 6 digit = 100 PLC

Getting data from the 34401A:
READ?

Other:

*RST
*CLS
DISPlay OFF
FUNCtion ""
:RESolution MAXimum
:NPLCycles MINimum
ZERO:AUTO OFF
:RANGe:AUTO OFF
CALCulate:STATe OFF
TRIGger:SOURce IMMediate
TRIGger:DELay 0 
READ? 

................................
OPTION 2:-

Still using the serial cable but using Keysight IO in Visa mode. The Keysight app will map COM1 on the PC to ASRL1 Visa address.

ASRL1::INSTR
INTERFACE = VISA

Set up the 34401A to SERIAL interface and 9600 baud, 8bit, No parity.

Set up Keysight Connection Expert as follows:
Visa Interface ID = ASRL1
SICL Interface ID = COM1
Logical Unit = 1
Baud = 9600
Data Size = 8
Flow Control = DTR/DSR
Stop Bits = 2
Parity = None
SRQ Line = RI

Test the connection using Keysight Interactive IO
Send SYST:REM as your first command otherwise you will be able to receive data.
Try CONF:VOLT:DC and CONF:VOLT:AC make sure the 34401A can switch voltage modes
Then send READ? and it should return data.
*IDN? should also return DMM data also.

Then, in WinGPIB there are two options:
INTERFACE = VISA
ADDRESS = ASRL1::INSTR
Enable Polling = unchecked
Terminator NewLine = unchecked
Terminator CRLF = checked
When you CREATE DEVICE the 34401A will BEEP.
Send Async SYST:REM first
Then you can READ?
................................
OPTION 3:-

GPIB interface.

GPIB1::6::INSTR
INTERFACE = VISA


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DEVICE = HP 3245A
GPIB1::10::INSTR

RST			Reset
SCRATCH			Clear 3245A memory
USE 0			Select channel A
USE CHANA		Select channel A
USE 1			Select channel B
USE CHANB		Select channel B
USE?			Returns the current channel in use
FREQ 2E3		2 kHz waveform frequency
FREQ 2000		2000 Hz waveform frequency
DCOFF -2.0		-2Vdc offset voltage
DCRES HIGH		DC high resolution mode
APPLY DCV 1.0		Output DC voltage 1.0Vdc
APPLY DCI 3.25E-3	Output DC current 3.25mA
APPLY ACV 3.0		Output sine wave 3.0Vac peak to peak
APPLY SQV 3.0		Output square wave 3.0Vac peak to peak
DUTY 30			Set 30% duty cycle
APPLY RPV 3.0		Output ramp value 3Vdc peak to peak
RANGE 0.0001		Example DCI mode (resolution 0.1nA) (others = 0.0001A, 0.001A, 0.01A, 0.1A)
RANGE 1			Max output. Example DCV mode range set (resolution 1uV)
RANGE 10		Max output. Example DCV mode range set (resolution 10uV)

NOTES:
If you measure the RMS value on a 3458A it will be 1.0608 Vac RMS since Vrms = Vpp/2.828 for a sine wave


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DEVICE = Agilent 34405A
USB connection

USB0::manufacturer ID::model code::serial number::INSTR
Get the details from Keysight Connection Expert.
Example:-
USB0::0x0957::0x0618::MY50329073::INSTR

READ?			Read from 34405A
CONF:VOLT:AC
CONF:VOLT:DC
CONF:VOLT:DC 0.1	VDC 100mV range
CONF:RES
CONF:RES 1000		Resostance 1k range
CONF:CURR:DC

*IDN?			device info

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DEVICE = EEZ-BB3 Power Supply (Serial mode)
COM4:115200,N,8,1,CRLF

OUTP OFF, CH1		sets Ch1 off
OUTP ON, CH1		sets Ch1 on
INST:SEL CH1		select Ch1 to be programmed
VOLT 12			sets output voltage to 12Vdc
CURR 0.5		sets CC setting to 0.5A (500mA)

Readback commands:
*IDN?			device info
volt?			current voltage setting
INST?			returns CH1 or CH2 whichever is selected for use, default CH1

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DEVICE = EEZ-BB3 Power Supply (TCPIP mode)
TCPIP0::192.168.1.184::5025::SOCKET

Send Async commands
OUTP OFF, CH1		sets Ch1 off
OUTP ON, CH1		sets Ch1 on
INST:SEL CH1		select Ch1 to be programmed
VOLT 12			sets output voltage to 12Vdc
CURR 0.5		sets CC setting to 0.5A (500mA)

Query Async Readback commands:
*IDN?			device info
volt?			output voltage setting
curr?			output current setting
INST?			returns CH1 or CH2 whichever is selected for use, default CH1

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DEVICE = Agilent E3632A PSU
GPIB1::8::INSTR

VOLT:RANG P30V		Sets 30V mode
OUTP ON			Sets output on
VOLT 0			Sets 0Vdc output
CURR 4			Sets current to full rated 4.0A

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DEVICE = Agilent E3648A PSU
GPIB1::7::INSTR

INST:SEL OUTP1		Selects Ch.1
VOLT:RANG P20V
VOLT 20
CURR 0.5
OUTP ON
INST:SEL OUTP2		Selects Ch.2
VOLT:RANG P8V
VOLT 5
CURR 1.0
OUTP ON

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DEVICE = HP 6611C PSU
GPIB1::4::INSTR

OUTP ON			Sets output on
OUTP OFF		Sets output off
VOLT 0			Sets 0Vdc output
CURR 4			Sets current to full rated 4.0A

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DEVICE = AGILENT 3499A

GPIB1::15::INSTR

44471A General Purpose Relay Module in Slot 1
ROUT:OPEN (@100)	open relay 00 in slot 1
ROUT:CLOSE (@100)	close relay 00 in slot 1

Info:
(@snn) = where s is slot number, nn is channel number

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DEVICE = Tektronix 4050 DMM (Fluke 8846 equivalent)

* Install NI VISA and a GPIB adapter.
* Make sure everything works as expected. Use NI MAX to double-check GPIB address details.
* You can either:
    * Set the Tek 4050 into 8842A emulation mode.
    * Command for "emulated" 8842A: *F1R1S1T2
* or use the following equivalent commands to operate the 4050 DMM in "native mode"; refer to the setup instructions from Ian:
    * PRE RUN: Conf:volt:dc DEF; volt:dc:nplc 10; :INIT
    * AT RUN: read?
* With zero-ing:
  *Send Asnyc: Conf:volt:dc DEF; volt:dc:nplc 10; Zero:auto 1; :INIT
  *At run: read?

Further tips:
* If your sample rate settings allow, use 100 NPLCycles with the following command for 'Send Asnyc:' 'Conf:volt:dc DEF; volt:dc:nplc 100; Zero:auto 1; :INIT'
* You might also want to save the 4050 DMM's VFD / display a few hours of operation, and add the following command to turn it off: 'DISP OFF' to the 'Send Async:' command.

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DEVICE = Keithley 195 (non-A)

"STB mask" set to "16" (default)
"Enable Polling" disabled
"Remove 1st two letters" disabled
"Abort Errors" enabled
"Terminator" disabled
"Send Blocking" enabled

In the "Pre run" entry field:
F0Z1R1P2S6W0A0G1T4X
In the "At run:" entry field:
No entry

Configuration details for the type 195 device. Reference: Keithley 195 Publication Date: August 1983 Document Number: 195-901-0IC
Section 4.10 DEVICE-DEPENDENT COMMAND PROGRAMMING
"F0Z1R1P2S6W0A0G1T4X" configures the Keithley type 195 DMM as follows:
F0 = DC Volts
Z1 = Zero-ing
R1 = Range 20 mV
P2 = Filter off, 32 samples averaged for 5 1/2 digits
S6 = 100 ms integration period, 5 1/2 digits
W0 = min. delay.
A0 = Enable internal multiplex routines (for accuracy)
G1 = Readings without prefix/suffix.
T4 = Trigger Continuous on X commands
X = Execute

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DEVICE = Stanford Research SR630, 16CH Thermocouple Monitor
GPIB0::19::INSTR

UNIT 12,CENT		- Set units of Ch.12 to Centigrade
TTYP 12, K		- Specify K-type thermocouple for Ch.12
MEAS? 12		- Read temp from Ch.12

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DEVICE = Keithley 2306 Battery Charger/Simulator
GPIB2::11::INSTR

DISP:CHAN 1			select battery channel as active one
VOLT 5				set output voltage to 5Vdc
SENS:CURR:RANG:AUTO ON		Enable auto range for current
CURR 750e-3			Set current limit to 750mA
CURR:TYPE TRIP			Select trip mode for current limit
SENS:FUNC 'VOLT'		Select the voltage measurement function
SENS:NPLC 2			Set integration rate to 2 PLC
SENS:AVER 5			Set average reading count to 5
OUTP ON				Turn on the PSU output
READ?				Trigger a read

SENS:FUNC 'CURR'		Select current measurement function
READ?				Trigger a read


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DHO900 series (presume 800 series also)

Uncheck "Enable Polling", all rest as default.

Address = TCPIP0::192.168.1.205::inst0::INSTR

Sending config/setup commands (SEND ASYNC):
:CHANnel1:DISPlay OFF		Turn channel 1 off
:CHANnel1:DISPlay ON		Turn channel 1 on
:CHANnel1:SCALe 0.1		Sets the vertical scale of Ch.1 to 0.1 V/div
:CHANnel1:COUPling AC		Sets the coupling mode of Ch.1 to AC

Reading back data (QUERY ASYNC):
:MEASure:STATistic:ITEM? AVERages,VPP,CHANnel1		Queries the average value of Ch.1 peak to peak.
:MEAS:STAT:ITEM? AVER,VPP,CHAN1				As above (don't need lower case)
:TRIGger:STATus?					Query the current trigger status, i.e. AUTO will be returned, albeit due to text var it will be displayed in box.
:TRIG:STAT?						As above (don't need lower case)

:MEAS:STAT:ITEM? CURR,ACRM,CHAN1			Current value AC RMS, Ch.1
:MEAS:STAT:ITEM? DEV,ACRM,CHAN1				Standard Deviation AC RMS, Ch.1



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Advantest R6581T 8.5 Digit DMM

GPIB1::24::INSTR
Enable Polling

*RST					Reset
READ?					Read
:CONF:VOLT:DC			Configure DCV mode
:SENS:VOLT:DC:RANG 10	10VDC range
:SENS:VOLT:DC:RANG 1	1000mV range
:VOLT:DC:DIG MAX		Set number of digits to max 8.5
:VOLT:DC:NPLC 30		VDC mode NPLC
:SENS:FRES:NPLC 100		Resistance mode NPLC 100

:VOLT:DC:DIG MAX
:SENS:CURR:DC:RANG 0.01
:CURR:DC:NPLC 10

R6581T E5810A = GPIB1::24::INSTR
R6581T ProSerial = 24:COM42:115200



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Wavetek 1281

23:COM17:115200

*RST
DCV 1,RESL8,FILT_ON,FAST_ON
*TRG;RDG?