17
3. Operation Modes
There are four operation modes in the 889B. They are
Normal, Binning, Remote
and
Remote Binning
modes.
By pressing the
Remote
button, users can select one of the 4 operation modes above.
Normal Mode
:
The
Normal
mode is the default operation mode when power on. It is a local mode that the 889B is controlled
by the keypads and the results of the measurement will be sent to both LCD display and a remote USB
equipped PC through the build-in USB port.
Binning Mode
:
The
Binning
mode is reserved for future use (such as GPIB). Currently, it is set to work the same way as the
Normal
mode that receives commands from the keypads and sends the results of measurement to both LCD
display and a remote PC through the USB port.
Remote Binning Mode
:
In the
Remote Binning
mode, the “RMT Bin” on the LCD will be lit, the operation of 889B is controlled by a
remote USB equipped PC or terminal, and the results of the measurement will be simultaneously sent to the
local LCD display and remote workstation through the USB port.
In this mode all functional
keypads
except
Remote
button are locked.
Remote Binning
mode is opened for users to design your own private, fast and high efficient application
programs. Users can design a server or driver (any software component that can do server’s job) with
Graphic
interface,
OSI
network model, and powerful interpreter built in it to support Graphic display, Network
connectivity, structure command (
SCPI, IEEE488
etc.) interpretations, and let it be a bridge between a higher
level application program such as
VB, VISUAL C++, EXCEL, ACCESS
etc. and the 889B. It is described in
the following figure.
The communication protocol between the 889B and a remote USB equipped PC is described as follows.
1. The commands that will be sent from a remote PC to the 889B are used to set-up the machine to a
selected measurement mode.
The command syntax is:
MOD current-state-code
It always starts with
MOD
follows by a space and then the
current state code.
The
current
state
code
that
is defined in the table below is 3 bytes (24 bits) long, bit-23, 22, 21… bit-0, where bit-23 is the MSB and bit-0
is the LSB.
Model
889B
Server:
COM, DCOM, ATL,
CONTROL,
AUTOMATION EXE
Built in:
Graphic
interface,
OSI network model
,
and/or powerful
Interpreter
or
Parser
VB, VISUAL
C++, EXCEL,
ACCESS etc.
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GlobalTestSupply
.com
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