User Manual 9260
Portrayal 2-5
Preparation for Use
Preparation for use includes removing the instrument from the
container box and connecting the cables to its input and output
connectors.
Installation
If this instrument is intended to be installed in a rack, it must be
installed in a way that clears air passage to its cooling fans. For
inspection and normal bench operation, place the instrument on the
bench in such a way that will clear any obstructions to its rear fan to
ensure proper airflow.
CAUTION
Using the 9260 without proper airflow will result in dam-
age to the instrument.
Factory
Configuration of the
9260 Settings
When you order the Model 9260, you should provide details how you
want this product configured. There is some amount of flexibility in the
configuration before the instrument is shipped from the factory. The
following are factory configured settings:
Gain
The default gain setting is x10.
Input Impedance
The default input impedance is 50
Ω. The 9260 can be ordered with
different input impedance values such as 75
Ω and 1MΩ. The 1MΩ is
recommended for low frequency operation only as the high input
impedance degrades the frequency response of the amplifier.
Appendix A specifies the bandwidth for the various source and input
impedances.
Source (output) Impedance
The default source (output) impedance is 0
Ω.
Input/Output Coupling
The default input/output coupling is DC. The 9260 can be ordered AC
coupled. DC coupling is recommended for signals that have dc
components with low frequencies operation. Appendix A specifies the
frequency limitation for inputs/outputs configured to AC coupling.
Single-ended/Differential Outputs
The default configuration is single-ended. With this configuration,
there are two independent channels that amplify signals that are
applied to the channel 1 and 2 inputs. The 9260 can be ordered with
differential outputs; In this case, channel 2 input is disabled and
channel 1 output is amplified and routed differentially to both channels
1 and 2. Channel 1 outputs the normal signal and channel 2 outputs
the inverted phase signal. Appendix A specifies the properties of the
9260 when configured for differential outputs operation.
