User guide

Analog I/O Spec - :

• Two analog inputs, 0 to 10V full-scale, 10K ohm input resistance.

Note: Can be assigned to any of the analog outputs or used for set-point or power threshold adjustment.

• Five individual outputs, 0-10 V DC full-scale, 1000 Ohm source impedance.

• Analog I/O DB15 header pin descriptions:

Enable Analog I/O - Enables/Disables analog I/O.

DAC Channel - Selects the DAC channel to configure and enable. All settings listed on the page pertain to the

selected DAC. There are 5 DAC channels, labeled “DAC0” – “DAC4”.

Equation - Allows a user to enter an equation that is processed by the receiver. The equation can be as basic as a

voltage output or as complex as the functions and controls allow. Measurement results can be included in the equa-

tion, as well as the readings from ADC0 & 1.

Note: The result of the equation is scaled according to the minimum and maximum value and voltage set-

tings. The DAC is programmed with the resulting voltage level.

Note: Update rate of the analog I/O is based on the measurement cfg (frequency selector). The DACs are

updated after a measurement set is available and the result of the equation is ready.

Averaging

The BDS offers two types of data averaging for Standard Tracking Mode: Simple (Fixed) or Moving. Both averaging

modes will reduce signal-to-noise ratio in a measurement. Averaging is performed in the receiver.

Figure 14 Averaging Dialog

Analog I/O Head Pin Description

Pin 1 ADC 1

Pin 2 ADC 0

Pin 3 GND

Pin 4 DAC 4

Pin 5 DAC 3

Pin 6 DAC 2

Pin 7 DAC 1

Pin 8 DAC 0

Pin 9 - 15 GND

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