Pa5 Programmable Attenuator - TDT RZ2 Manual

PA5 Programmable Attenuator
Overview
The PA5 Programmable Attenuator is a precision device for controlling signal levels
over a wide dynamic range, providing 0 to 120 dB of attenuation for signals up to
100 kHz in frequency. The device is fully programmable; however, simple manual
operation is also available using front panel controls.
When used programmatically, the module may be controlled via TDT's ActiveX
Controls, as well as any programming environment that supports ActiveX or programs
that allow scripts for implementing ActiveX controls, such as Microsoft Access and
Excel. For information about how to control the module programmatically, see the
ActiveX Reference Manual
When used in manual operation, the attenuation level is adjusted in two modes
of operation:
•
•
Power and Interface
The PA5 Programmable Attenuator is powered via the System 3 zBus (ZB1PS) and
requires an interface to the PC (Gigabit, Optibit, or USB). Ensure that the ZB1PS
chassis housing the PA5 is connected in the interface loop according to the
installation instructions for the interface in use.
Important! The chassis housing the PA5 must be powered and connected to a PC via the PC
interface for BOTH manual and programmed operation.
.
Atten
The mode permits the user to adjust the attenuation level of the signal
from 0 to 120 dB in increments of 0.1 dB.
The UserAtt mode permits the user to adjust the attenuation level of the sig-
nal using user-programmed parameters. Before using the UserAtt mode,
attenuation parameters must be set up using the UserOps menu.
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PA5 Programmable Attenuator