Agilent Technologies E8462A, User Manual

Page: 26 / 156

24 Configuring the Agilent E8462A Multiplexer
Terminal Cards
Three optional terminal cards are available for the Agilent E8462A:
•
Option 012 Crimp-and-Insert Terminal Card
•
Option 014 Fault Tolerant Terminal Card
•
Option 015 Ribbon Cable Connector Terminal Card
Option 012 Crimp-and-
Insert Terminal Block
The Option 012 Terminal Block provides a terminal card housing and two
160-pin terminal connector blocks (Agilent P/N 1252-6531).
Note
The contacts for the Option 012 Terminal Block connectors ARE NOT
provided. This allows you to purchase only the number of contacts you
require for your application.
Agilent P/N 8150-5207 is available for purchase and is a single-conductor
with contact (a crimp-and-insert contact is crimped onto one end, the other
end is not terminated). Refer to Figure 1-5. "Connector Block and
Single-Conductor Wire with Contact (not provided)." on page 19.
The crimp-and-insert contacts you must purchase (Agilent P/N 1252-6533
for single contact) are gold-plated, accept a wire size of 20 to 26AWG, and
carry a maximum current of 2A @70°C. You will also need a crimp tool
(Agilent P/N 8710-2306 or ERNI Components P/N 014374) and optionally
a disassembly tool (P/N 8710-2307 or ERNI Components P/N 471555).
Caution
The Agilent E8462A Option 012 Crimp-and-Insert Terminal
Block connectors must be replaced after 15,000 hours of use if
the module regularly switches voltages >190VDC or
>190VACrms due to the close terminal spacing and the
potential for pin-to-pin leakage.
Option 014 Fault Tolerant
Terminal Block
Option 014 Terminal Block provides nine ribbon-cable header connectors.
P101 through P108 provide the channels and terminal bus connection from
the front panel connectors (J101 and J102) of the Agilent E8462A; P109 is
a 16-pin connector for the analog bus connection. DS101 and DS102 are
LEDs which provide information as follows. The green LED (DS101) will
light as the Multiplexer is accessed by the VXI controller. The yellow LED
(DS102) monitors the firmware execution, and will light whenever there is
error during DIAG:TEST? or *TST? command execution.
Caution
The Option 014 Fault Tolerant Terminal Block is limited to
voltages of 60VDC or 50 VACrms or 70.7 VACpeak maximum.
Do not exceed these voltages.
Figure 1-10 shows the associated channel numbers. RT100 through RT355
are 256 PTC
1
resistors which behave like a resettable fuse and will increase
1. PTC: Positive Temperature Coefficient.