SC5313A Operating & Programming Manual
Rev 1.0.2
5
Power Connection
Power is provided to the device through a two-position screw terminal block connection as shown in
Figure 1. Proper operation of the device re12 VDC source and ground return wires capable of
delivering a minimum current of 1.5 Amps. The polarity of the connector is shown on the front panel of
the RF module, just above the screw terminal block.
RF Signal Connections
All RF signal connections (ports) on the SC5313A are 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‘s 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 5 in-lb max (56 N-cm max)
LO OUT
This port outputs the tunable LO signal allowing phase-coherent daisy-
chaining of multiple IQ demodulator modules. The connector is SMA female.
The nominal output impedance is 50 Ω.
RF IN
This port accepts an RF signal ranging from 400 MHz to 6 GHz. The connector
is SMA female. The nominal input impedance is 50 Ω. Maximum input power
is +23 dBm with ATTEN #1 set to at least 10 dB attenuation.
RF AUX IN
This port accepts an RF signal ranging from 400 MHz to 6 GHz. This port can
be used as an alternate path for system-level calibration. The connector is
SMA female. The nominal input impedance is 50 Ω.
LO IN
This port accepts a tunable LO signal from an external source to drive the
demodulator. The connector is SMA female. This port is AC-coupled with a
nominal input impedance of 50 Ω. Maximum input power is +10 dBm.
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