R&S CMU Instrument Design and Function Description
1100.4903.82 3.1 E-5
3 Repair
T
his chapter describes the design of the R&S CMU, simple measures for repair and troubleshooting
and, in particular, the replacement of modules. For troubleshooting and diagnosis, a maintenance menu
is available, which permits to poll diagnostic voltages of the modules and indicate limit violations.
The installation of options and software update are explained in chapter 4 of this service manual.
Instrument Design and Function Description
Instrument design
Cabinet design
For a detailed overview of the R&S CMU design refer to the block
diagram below and the exploded views in chapter 5).
The following function description of the instrument refers to the block
diagram.
The casing of the R&S CMU is a robust, gray-blue Rohde & Schwarz
standard casing according to BW 2000.
It consists of a frame with integrated rear panel and a labeling panel at
the front. The frame is covered by a one-piece tube and screwed with
four rear-panel feet. Two front handles are screwed to the frame as
standard, an additional handle on the left side is deliverable as an
accessory.
The dimensions are as follows:
Overall: W x H x L 465.1 mm x 196.5 mm x 517 mm
Rackmount: 19” 1/1, 4HU, 450
Note: The terms "left" and "right" in the manual always refer to the front view of the instrument.
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