HP E1340A User's Manual
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Setting the Attenuation Command Opcode = 4
Bit 7 6 543210
Bit Weight 128 64 32 16 8
421
Byte 1 -------> Atten Corr not used MS nibble of attenuation
Setting
0 - enable 20 dB
attenuator
1 - disable 20 dB
attenuator
0 - enable sine
wave correction
1 - disable sine
wave correction
X
Byte 2 -------> Least Significant Byte of Attenuation
Setting the Offset: Command Opcode = 3
Bits
76543210
Byte 1 -------> not used MS Nibble of Offset
Byte 2 -------> Least Significant Byte of Offset
Setting the Sweep Rate Command Opcode = 7
Bits
76543210
Byte 1 -------> Most Significant Byte of Phase Increment
Byte 2 -------> 2nd Significant Byte of Phase Increment
Byte 3 -------> 3rd Significant Byte of Phase Increment
Byte 4 -------> Least Significant Byte of Phase Increment
Byte 5 -------> Delay (tic) Count
Byte 6 -------> 0 (Linear Sweep)
Setting the Burst Count Command Opcode = 8
Bits
76543210
Byte 1 -------> Most Significant Byte of Burst Count
Byte 2 -------> Least Significant Byte of Burst Count
Table C-2. HP E1340A Command Opcodes and Parameter Formats (Cont’d)
Appendix C HP E1340A Register-Based Programming 241