HP 70907A, Installation And Verification Manual

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Addressing the Module
The EMIM needs an appropriate Hewlett-Pac k ard Mo dular System In terface Bus (HP-MSIB)
address to b e able to comm unicate with the master of the HP 70000 Mo dular Measuremen t
System. The EMIM's address is set using its R O W and COLUMN address switches.
Note
The EMIM can b e used in most system congurations without c hanging the
factory-preset address.
Determining the HP-MSIB Address
The EMIM has a factory-preset HP-MSIB address of 5, 18 (row 5, column 18). Figure 2-1
sho ws the address map for an EMIM in an HP 71210C system. The addresses in this gure
are the factory-preset addresses for the mo dules. When a system con taining an EMIM is
turned on, the system master selects the fron t end (EMIM or RF section) that is lo cated
low est in the address map. As seen in the gure b elow, the HP 70907B is low er in the address
map than the HP 70908A. Therefore, the EMIM will b e selected when the system is turned
on.
Figure 2-1. Address Map for an EMIM in an HP 71210C System
If the EMIM is going to b e used in an HP 70000 Mo dular Sp ectrum Analyzer System where
the mo dules all ha v e their factory-preset addresses, the EMIM probably will not need to
ha v e its factory-preset address c hanged. Ho w ev er, if the factory-preset addresses of the
mo dules in the system ha v e b een c hanged, or if the EMIM is b eing used in another t yp e of
HP 70000 Mo dular Measuremen t System, the EMIM's factory-preset address may need to b e
c hanged. F or more information ab out HP-MSIB addressing rules, refer to the Installation and
V erication Manual for the system master (for example, HP 70900B Lo cal Oscillator).
2-2 Installation