(8.5x11) 6000 Manual Cover - Newport Corporation

4.3 Entering Remote Computer Interface Mode
When a command or query is received by the GPIB or RS-232 interface ports,
the 2832-C automatically goes into remote interface mode. When the meter is
in the remote mode, the right-most character of the secondary channel
display area will display an asterisk, . The local-lockout mode is designated
by displaying
at the right side of the secondary channel display area.
While in remote mode, the keypad is disabled except for the power and
key. To get out of remote mode press the key. If the
2832-C is in local lockout then the LLO remote command must be used to
disable local lockout before you will be able to return to keypad control.
The message area of the display will indicate when the keypad is in local
lockout state by displaying
as the right-most character.
4.4 RS-232C Communication
Before communicating with the 2832-C through the RS-232 port, proper cable
connections must be made. Figure 10 shows the cable connections for
communicating with the RS-232C port on the 2832-C.
Once cable connections are made, the baud rate and echo mode need to be
set. Valid baud rates are 19.2K, 9600, 4800, 2400, and 1200. The parity, data
bits, and stop bits are fixed at no parity, 8 data bits, and 1 stop bit.
RS-232C Parameters
Baud Rate 19.2K, 9600, 4800, 2400, or 1200
Parity
none
Data bits 8
Stop bits 1
When the echo mode is enabled the 2832-C generates a ‘> ‘ prompt for every
new line and all characters sent to the 2832-C are echoed back over the
interface. Error messages are reported over the interface immediately. As
the user is entering commands the line may be edited by using the backspace
key (sending an ASCII decimal 08 code) or by using the DEL key (sending an
ASCII decimal 127 code).
In echo mode the RS-232C port is interactive and especially useful when a
dumb terminal type of device is used to communicate with the 2832-C.
When echo mode is disabled (normal mode) the 2832-C does not generate a
prompt or echo characters back over the interface. Error messages must be
accessed by using the *ERR? query. This is the default state of the echo mode.
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