Module Setup

Related Topics

INSTALL or REMOVE MODULES

You do not need to turn off the mainframe to install or remove the modules. The module can be installed in either the left or right instrument slot. To ensure the instrument meets all published specifications there must be a good ground connection between the module and mainframe. The RF connectors on the rear of the module are spring-loaded; therefore, you must finger-tighten the knurled screw on the front panel of the module to ensure the module is securely seated in the mainframe.

To learn how to configure the different types of modules, click on the following links:

FlexDCA channels are numbered 1A, 2A, 3A, and 4A and they correspond to channel inputs as shown in the figure. Use the Channel dialog box to quickly turn channels on or off and to enter precise values for channel scale and offset.

MODULE IDENTIFICATION

If a module is not properly identified by the mainframe, remove the module. Click File > Exit to close FlexDCA and again to close the instrument application. Re-insert the module and finger tighten the locking screws. From the desktop, restart the instrument application.

Protecting Input Channels that have 3.5 mm Connectors

The Keysight N9355CK01 is a DC coupled limiter (DC to 26.5 GHz) that is used to protect sensitive oscilloscope channels from damage due to electric overload stress (EOS) and electrostatic discharge (ESD). For example, voltages in excess of ±2V can damage high-performance samplers used in oscilloscopes. The limiter dramatically reduces the likelihood that such voltages will reach the sensitive part of the instrument, ensuring that the oscilloscope will perform reliably. Instruments with dual electrical channels, such as the 54754A, will require two N9355CK01 limiters. Step generators within the TDR modules use ≤0.2V, which is less than the diode threshold of the N9355CK01 limiter. The N9355CK01 can also be used to protect the electrical channel of the 86105x and similar modules, as long as the signal does not exceed –0.5V to +0.5V. The N9355CK01's voltage drop is ±0.6V to 0.7V at ±10 mADC.

The N9355CK01 will protect instruments from occasional and short voltage spikes. A major power source, such as a high voltage and current supply can still cause severe damage to the limiter itself, or the instruments. Operators should continue using industry standard EOS and ESD practices to minimize this risk.

Figure. Two N9355CK01s Inserted into Signal Paths