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The Command and
Parameter Registers
Address
base + 08
Address
base + 0A
The Input Data
Register
Address
Base + 0C
238 HP E1340A Register-Based Programming
Commands and parameters are opcodes or data bytes written to the
Command and Parameter Registers.
15 - 8
not used
16
15 - 8
not used
16
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 is used to download amplitude points to RAM or
directly to the AFG DAC.
15 - 12
11
Not Used
16
7
6
5
Command Opcode
7
6
5
Parameter Byte
10
9
8
7
Amplitude data
4
3
2
4
3
2
6
5
4
3
2
1
0
1
0
1
0
Appendix C
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