8
The output and sense terminals for OUTPUT1 and OUTPUT2 are duplicated on the rear panel
terminal blocks and are marked
+
,
−
, +S and
−
S. These connections are paralleled with their
front panel equivalents.
Switch the LOCAL/REMOTE switch to REMOTE when remote sensing is required. When the rear
panel Output terminals are used, the use of remote sense is always recommended to ensure that
output regulation is maintained within specification; connections can be made to either the front or
the rear remote sense terminals but never to both pairs of terminals at the same time. Switch back
to LOCAL when remote sensing is not in use.
RS232 (CPX200DP only)
9
−
pin female D
−
connector with pin connections as shown below. Can be connected to a standard
PC port using a fully wired 1:1 male-female cable without any cross-over connections.
Pin
Name
Description
1
RI
Passively asserted (+V through 10k
Ω
)
2
TXD
Transmitted data from instrument
3
RXD
Received data to instrument
4
CTS
5
GND
Signal ground
6
RTS
Passively asserted (+V through 10k
Ω
)
7
DSR
No internal connection
8
DTR
9
CD
No internal connection
Signal ground is connected to instrument ground.
USB (CPX200DP only)
The USB port is connected to instrument ground. It conforms with USB 2.0 (Full Speed) and
accepts a standard USB cable. The Windows plug-and-play functions should automatically
recognise that the instrument has been connected. If the correct driver is not found, follow the
Windows on-screen prompts and install the required files from the CD supplied.
LAN (CPX200DP only)
The LAN interface is designed to meet 1.4 LXI ( Lan eXtensions for Instrumentation) Core 2011.
Remote control using the LAN interface is possible using a TCP/IP Socket protocol. The
instrument also contains a basic Web server which provides information on the unit and allows it to
be configured. Since it is possible to misconfigure the LAN interface, making it impossible to
communicate with the instrument over LAN, a LAN Configuration Initialise (LCI) mechanism is
provided via a recessed switch on the rear panel (marked LAN RESET) to reset the unit to the
factory default.
Further details are given in the Remote Operation chapter. For more information on LXI standards
refer to www.lxistandard.org/home
GPIB (CPX200DP only)
The GPIB signal grounds are connected to the instrument ground. The implemented subsets are:
SH1 AH1 T6 TE0 L4 LE0 SR1 RL2 PP1 DC1 DT0 C0 E2
The GPIB address is set from the front panel.
