HP E1340A User's Manual
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The Command and
Parameter Registers
Commands and parameters are opcodes or data bytes written to the
Command and Parameter Registers.
Address 15 - 8 7 6 543210
base + 08
16
not used Command Opcode
Address 15 - 8 7 6 543210
base + 0A
16
not used Parameter Byte
Command Format. A command consists of an opcode written to the
Command Register, plus zero to six parameters written to the Parameter
Register. A command opcode written to the Command Register might
appear as:
8,1
where "8" is the offset of the Command Register and "1" is the opcode. A
parameter might appear as:
10,128
where "10" is the offset of the Parameter Register and 128 is the value of
the parameter byte.
The AFG commands and parameters are covered in the section “Command
Descriptions and Formats”. The sequence and timing involved in sending
commands are covered in the section “Program Timing and Execution”.
The Input Data
Register
The Input Data Register is used to download amplitude points to RAM or
directly to the AFG DAC.
Address 15 - 12 11 10 9 8 76543210
Base + 0C
16
Not Used Amplitude data
238 HP E1340A Register-Based Programming Appendix C