©2018
Rev 1.1
7
Physical Description
A cooling plan is sufficient when the SC5317A and SC5318A on-board temperature sensors indicate a rise
of no more than 20°C above ambient temperature under normal operating conditions.
Front Interface Indicators and Connectors
The SC5317A is a PXIe-based RF downconverter with all user I/O located on the front face of the module.
The SC5318A is a serial controlled core module, whose front face connections are shown in Figure 1.
Signal Connections
All signal connections (ports) on the device are female SMA-type. Exercise caution when fastening cables
to the signal connections. Over-tightening any connection can cause permanent damage to the device.
The condition of your system signal connections can significantly affect measurement accuracy and
repeatability. Improperly mated connections or dirty, damaged, or worn connectors can degrade
measurement performance. Clean out any loose, dry debris from connectors with clean, low-
pressure air (available in spray cans from office supply stores).
If deeper cleaning is necessary, use lint-free swabs and isopropyl alcohol to gently clean inside the
connector barrel and the external threads. Do not mate connectors until the alcohol has completely
evaporated. Excess liquid alcohol trapped inside the connector may take several days to fully
evaporate and may degrade measurement performance until fully evaporated.
Tighten all SMA connections to 8.8 in-lb max (100 N-cm max)
RF In
This is the RF input port to the device with nominal impedance
of 50
. Its maximum input power is +27 dBm.
RF out
This is the bypass output port of the RF input signal with
nominal impedance of 50
.
IF out
This is the IF output of the device with nominal impedance of
50
.
LO/Ref In
This is the 10 MHz refence input to the device, enabling the
device to phase lock its internal clocks to an external reference
source. This nominally 50
port is AC coupled. This port is also
shared with the device external LO input. Maximum rated
input power is +10 dBm for both Ref and LO signals.
LO rear
This is the other selectable external LO input port. Only one LO
port, either the front or rear, is selected as the input.
Device LED Indicators
These are LED indicator lights for the device, and their functions are listed in
and