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E2730A VXI RF TUNER
3.4.3 MEMORY OPERATION
DIRECT MEMORY COMMANDS
OPERATION
A memory channel contains an entire setup for a single frequency. A total
of 200 memory channels are provided. Memory channels may be accessed
directly via the Store Memory Direct (SMD) and Read Memory Direct
(RMD) commands. However, the memory channels may also be accessed
by setting up the single frequency parameters and then storing them with
the Store Channel (STO) command or by recalling a specified channel
with the Recall and Execute (RCE) command and then reading the channel
data with the individual queries.
The direct memory commands allow access to memory channels without
impacting the current tuner operation. The first argument after the SMD
or RMD command identifies the channel number (which can be zero to
indicate current tuner operations or one to 200 to specify a memory
channel). The remaining fields are the data values associated with the
mnemonic parameters as indicated in the Table 3-8.
The SMD command may be sent in abbreviated forms. The command may
end after any completed field. The remaining fields in the channel will be
unchanged.
Fields that are not to be altered may be skipped by
concatenation of the commas. The skipped field will be unchanged.
The commands in this message category are listed in Table 3-8.
3-13
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