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