2
The jumpers on the STP-36CJC are used to connect the onboard cold junction compensation circuit to analog input Channel 0
of the 3108/7 PCI board. This circuit is powered by the 3108/7 board and provides accurate cold junction compensation when
using thermocouples. By removing the jumpers, Channel 0 is available as a voltage input. See “Configuring the STP-36CJC”
for more information.
The STP-36CJC panel has rubber feet and mounting holes.
WARNING
When using the STP-36CJC, the maximum voltage allowed is 30V RMS, 42.4V peak, or
60VDC. Exceeding this limit could cause an insulation failure and shock hazard.
CAUTION
Although the STP-36CJC is rated for 60 volts peak-to-peak, the KPCI-3108/7 is rated
for a much lower voltage. The KPCI-3108 analog inputs can only tolerate 35 volts peak
without damage.
Specifications
Voltage:
30V RMS, 42.4V peak, or 60VDC
Current:
1 amp maximum
Operating temperature:
0°C to +85°C
Dimensions:
L: 133mm (5
¹⁄₄
in)
×
W: 72mm (2
¾
in)
× Η:
32mm wide (1
¹⁄₄
in)
CJC Specifications:
CJC Output:
+10mV/°C
CJC Accuracy:
±0.5°C (at 25°C)
±1.5°C (over full temperature range)
RMS noise:
0.05°C
Safety precautions
Observe the following safety precautions before using this product and any associated instrumentation. Although some instru-
ments and accessories would normally be used with non-hazardous voltages, there are situations where hazardous conditions
may be present.
This product is intended for use by qualified personnel who recognize shock hazards and are familiar with the safety precautions
required to avoid possible injury. Read the operating information carefully before using the product.
Installation
As described in the International Electrotechnical Commission (IEC) Standard IEC 664, the signal terminals are Installation
Category I and must not be connected to mains.
Do not connect switching cards directly to unlimited power circuits. They are intended to be used with impedance limited
sources. NEVER connect switching cards directly to AC mains. When connecting sources to switching cards, install protective
devices to limit fault current and voltage to the card.
Operators and maintainers of this product must be protected from electric shock at all times. The responsible body must ensure
that users are prevented access and/or insulated from every connection point. In some cases, connections must be exposed to
potential human contact. Product users in these circumstances must be trained to protect themselves from the risk of electric
shock. If the circuit is capable of operating at or above 1000 volts,
no conductive part of the circuit may be exposed.
