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Note
Specifying SCPI
Commands
RF Multiplexer
Channel Addresses
RF Multiplexer Card
Numbers
Note
12 Getting Started
This discussion applies to SCPI programming. See Appendix B (RF Multiplexer
Registers) for details on RF Multiplexer registers.
To address specific channels within an RF Multiplexer, you must specify the SCPI
command and RF Multiplexer channel address. For the RF Multiplexer, use
CLOSe (channel_list) to switch (connect) channels.
For the RF Multiplexer, the channel address (channel_list) has the form
(@ccmmnn) where cc = RF Multiplexer card number (01-99), mm=RF
Multiplexer/Expander module number (00-02), and nn = channel number
(00-03,10-13,20-23,30-33, 40-43, or 50-53). Use the form:
• (@ccmmnn) for a single channel
• (@ccmmnn,ccmmnn) for multiple channels
The RF Multiplexer card number depends on the switchbox configuration
(single-module or multiple-module) set for the RF Multiplexers. (Leading zeroes
can be ignored for the card number.)
The Expander module (s) card number is the same as the RF Multiplexer it is
connected to.
• Single-module. For a single-module switchbox, the card number is always
01.
• Multiple-module. For a multiple-module switchbox, the RF Multiplexer
module with the lowest logical address is always card number 01. The card
number with the next successive logical address is 02, and so on. Figure 1-2
illustrates the card numbers and logical addresses of a typical
multiple-module switchbox.
The logical addresses noted in Figure 1-2 applies to RF Multiplexers installed in an
HP 75000 Series C Mainframe with an HP Command Module. See your specific
" HP Command Module Manual" for more information on switchboxes and logical
addressing. For uses in other systems or mainframes, see the appropriate manuals.
Chapter 1
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