10-20 Remote Operations Model 2750 Multimeter/Switch System User’s Manual
Selecting and configuring RS-232 interface
After selecting (enabling) the RS-232 interface, you will then set the baud rate, flow con-
trol, and terminator.
1. Press the SHIFT key and then the RS-232 key. The RS 232 ON or RS 232 OFF
message will be displayed.
2. If the RS-232 is already ON, press ENTER and proceed to step 3. Otherwise, press
the key to place the cursor on OFF, press the
Δ or ∇ key to display the ON
state, and then press ENTER.
NOTE Enabling (ON) the RS-232 interface disables (OFF) the GPIB. Disabling the
RS-232 interface enables the GPIB.
3. To retain the presently displayed BAUD rate, press ENTER and proceed to step 4.
Otherwise, press the key to place the cursor on the baud rate value, use the
Δ or
∇ key to display the desired baud rate, and then press ENTER.
4. To retain the presently displayed FLOW control, press ENTER and proceed to step
5. Otherwise, press the key to place the cursor on the flow control setting, use
the
Δ or ∇ key to display the alternate flow control setting, and then press
ENTER.
5. To retain the presently displayed terminator (Tx TERM), press ENTER. Otherwise,
press the key to place the cursor on the terminator setting, use the
Δ or ∇ key
to display the desired terminator, and then press ENTER.
RS-232 connections
The RS-232 serial port is connected to the serial port of a computer using a straight-
through RS-232 cable terminated with DB-9 connectors. Do not use a null modem cable.
The serial port uses the transmit (TXD), receive (RXD), and signal ground (GND) lines of
the RS-232 standard. It does not use the hardware handshaking lines, CTS and RTS.
Figure 10-4 shows the rear panel connector for the RS-232 interface, and Table 10-2
shows the pinout for the connector.
If your computer uses a DB-25 connector for the RS-232 interface, you will need a cable
or adapter with a DB-25 connector on one end and a DB-9 connector on the other, wired
straight through (not null modem).
2750-900-01.book Page 20 Wednesday, August 3, 2011 7:56 AM
To Next Page
Loading...
Need help?
General
