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BUS REMOTE INTERFACE GPIB/USB/RS-232
This section provides information on the proper use and configuration of the bus
remote interface. The USB/RS-232 remote interface is standard on the HypotULTRA
but the GPIB (IEEE-488) interface option can be substituted for the USB/RS-232
interface. Please refer to
Section 10. Options
for details on the HypotULTRA
options. The USB/RS-232 interface uses the same command set as the GPIB
interface for setting test parameters; however, many functions of the GPIB 488.2
interface are not available through USB/RS-232. The IEEE-488 interface included
with the HypotULTRA conforms to the requirements of the IEEE-488.2 standard.
The USB/RS-232 interface card requires you to download a driver in order for the
instrument to recognize the USB interface. The driver can be found on the Associated
Research, Inc. website:
http://www.asresearch.com/products/software/USB-driver.aspx
Click on “USB/RS-232 Driver” to download the driver. This link contains an automatic
extract and install program. Follow the instructions of the installation program to
initialize the driver install. NOTE: The USB port acts as a USB to RS-232 converter.
As a result, the PC will recognize the USB port as a virtual COM port.
8.1 USB/RS-232 Interface
This interface provides all of the control commands and parameter setting commands
of the GPIB interface with the exception of some of the 488.2 Common Commands
and SRQ capability. All commands can be found in section
7.4. USB/RS-232/GPIB
Command List
. The identification command *IDN and the Status Reporting
commands are also available through USB/RS-232.
RS-232 Connector
The RS-232 cabling should be configured as follows for a 9-pin serial port interface:
Communications Port Configuration
The COM port should have the following configuration:
38400 baud
Instrument RS-232 Port
PC / Bus Controller
2
3
5
2
3
5
TD
RD
TD
RD
SIG
GND
SIG
GND
Содержание HypotULTRA 7800
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Страница 196: ...191 Calibration of 9 99mA DC Current Range The 10mA DC current range calibration is a one step process ...
Страница 202: ...197 Calibration of GFI 5 0mA The calibration of GFI 5 0mA is a two step process ...