KEPCO KLP Series User Manual, Rev 4 - Manual (Page 41)

KLP-HV 091313
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e. Fault Connections (RELAY_NC, RELAY_COM, RELAY_NO
It is recommended that normally open and normally closed relay signals RELAY_NC (pin 10)
and/or RELAY_NO (pin 2), respectively, be twisted together with RELAY_COM (pin 4) as
needed to eliminate noise pickup. See PAR. 3.2.17.1 to configure internal relay.
f. External Trigger (EXT_TRIG)
External Trigger may be used with the SCPI TRIG commands (see KLP Developer’s Guide)
during digital remote operation. For noise suppression it is recommended that wires from
EXT_TRIG, pin 14 and ground (pin 9, 11, 13, or 15) be twisted together.
2.8 DIGITAL CONNECTIONS
The following paragraphs describe the connections required to use the GPIB, RS 232 [standard
models only] or LAN [E-Series models only] ports for remote control of the unit.
2.8.1 GPIB CONNECTIONS
Your computer must have a GPIB interface card installed. Connect the power supply to the com-
puter’s GPIB interface card. Use a standard GPIB interface cable at the GPIB port on the rear
panel (See Figure 2-2). Refer to Table 2-3 for GPIB port pin assignments. Refer to PAR. 3.2.12
to change the default GPIB address (6) from the front panel.
2.8.2 RS 232 CONNECTIONS [STANDARD MODELS ONLY]
Communications between KLP, considered data terminal equipment (DTE), and data communi-
cations equipment (DCE), e.g. a modem, requires a patch cable, or one with a pin-for-pin rela-
tionship between terminating connectors. A null modem cable (see Table 1-5) is necessary for
nearly all applications, with the exception of those in which the RXD and TXD line transposition
is accomplished via external hardware (e.g. older Apple MAC computers with D-sub serial port).
See Table 2-4 for RS 232 port pin assignments. Connect the cable to the KLP at the RS 232
port located on the rear panel (See Figure 2-2). Refer to PAR. 3.2.13 to change the default baud
rate (38400) from the front panel.
2.8.3 LAN CONNECTIONS [E-SERIES MODELS ONLY]
Connect the KLP to the LAN via the RJ 45 LAN port located at the rear panel (See Figure 2-2).
Refer to Table 2-5 for LAN port pin assignments. Refer to PAR 3.2.15 to configure the LAN inter-
face from the front panel. Some configuration can also be done through the web interface (see
PAR. 3.3.6.4). Refer to the KLP Developer’s Guide for the associated SCPI commands