National Instruments SCXI-1305, Installation Manual

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322313B-01 © Copyright 1999, 2000 National Instruments Corp. All rights reserved. December 2000
INSTALLATION GUIDE
SCXI -1305 AC/DC C
OUPLING
BNC
T
ERMINAL
B
LOCK
This guide describes how to install and use your SCXI-1305 AC/DC
coupling BNC terminal block.
Introduction
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
peak
or DC. Exceeding this
level may injure you. National Instruments is not liable for damage or injuries resulting
from improper connection.
What You Need to Get Started
To set up and use your SCXI-1305 terminal block, you need the following
items:
❑
SCXI-1305 terminal block
❑
SCXI-1305 AC/DC Coupling BNC Terminal Block Installation Guide
™