INSTALLATION GUIDE
SCXI -1305 AC/DC Coupling
BNC Terminal Block
This guide describes how to install and use the SCXI-1305 AC/DC
coupling BNC terminal block.
The SCXI-1305 is a shielded terminal block with BNC and SMB
connectors that you can connect to the SCXI-1120/D, SCXI-1121,
SCXI-1125, SCXI-1126, SCXI-1140, or SCXI-1141/1142/1143 input
connectors. You can configure each SCXI-1305 channel to AC- or
DC-couple a signal to an SCXI module. Each channel can
ground-reference a floating signal with a bias resistor.
The terminal block has eight BNC and one SMB connector for easy
connection. The eight BNCs are for signal connections to the eight module
inputs. The SMB provides access to module digital signals, HOLDTRIG
for the SCXI-1140, and OUTCLK and EXTCLK for the
SCXI-1141/1142/1143. These signals are not active on the SCXI-1120/D,
SCXI-1121, SCXI-1125, and SCXI-1126.
Caution
The SCXI-1305 limits the maximum common-mode voltage of the
SCXI-1120/D, SCXI-1121, SCXI-1125, and SCXI-1126 to 42 V
pk
or DC. Exceeding this
level may cause injury. National Instruments is
not
liable for damage or injuries resulting
from improper connection.
What You Need to Get Started
To set up and use the SCXI-1305 terminal block, you need the following:
❑
Hardware
–
SCXI-1305 terminal block
–
SCXI or PXI/SCXI combination chassis
™
