Ladybug LB5900 Series Operation Manual

LB5900 Series Sensor Recorder Output Operation Guide
The Recorder Output function (Option 001) is a 0 to 1 VDC settable output that is proportional to the
measured RF input power. Note that on LB5900 series sensors Wideband Detector Out and Trigger Out
share the connector with Recorder Out. Only one can be used at any one time. PMA-12 sets the output
to Recorder Out automatically when Recorder Out is selected using the Mode dropdown menu. Once
this is done, the Start RO button can be used to enable and disable Recorder Out. The recorder output
signal passes through a 40 Hz hardware filter and the output is updated 1000 times per second.
An important unique feature of LadyBug's Recorder Output Option is that it is capable of running when
no computer is connected if Option UOP (Unattended Operation) is also installed. For example, after the
options are set up, and Recorder Out is active, the sensor can be powered through the USB cable or
through the SPI cable if Option SPI has been purchased; and recorder output will deliver a calibrated
analog output if set accordingly. Review the Recorder Out in Unattended Operation section for
additional information.
Figure 1 - Recorder Out Setup
The level setup for the Recorder Out is located in the Sensor's Detail
Tab. Setup is accomplished by establishing a desired power level for
0-Volts (lower power level) on the Recorder Output and a power
level that is to result in a 1-Volt Output (the higher power level).
Power applied below the lower level will result in a 0-Volt output;
and power over the higher power will result in a 1-Volt output. It is
important to remember that the sensor's output MUST be driven
into a 1,000 ohm load (see image at right). The output voltage will
not be correct without the load. Once the settings are established,
the output will be a linear representation of the power between the two levels. The output voltage
inside these ranges is a calibrated DC measurement value.
DOC: Recorder Out Operation – V2.0 April 2016