HP E1340A User's Manual
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Setting the function and loading RAM Command Opcode = 5
Bit 7 6 543210
Bit
Weight
128 64 32 16 8 4 2 1
Purpose
DAC Source Download Mode Waveform selection (waveform EEPROM) RAM
Setting
0 - Input Data
Register
1 - waveform
EEPROM
0 - waveform
appears at output
as it is loaded into
RAM from the Input
Data Register.
1 - output remains
at 0V as waveform
is loaded into RAM
from the Input Data
Register.
0 0 0 0 - Sine wave
0 0 0 1 - Triangle wave
0 0 1 0 - Sin (x)/x for 8.25 radians
0 0 1 1 - Haversine
0 1 0 0 - Square wave
0 1 0 1 - First 10 terms of a square wave
0 1 1 0 - First 4 terms of a square wave
0 1 1 1 - Falling ramp
1 0 0 0 - First 20 terms of a falling ramp
1 0 0 1 - Rising ramp
1 0 1 0 - First 20 terms of a rising ramp
1 0 1 1 - White noise
1 1 0 0 - Modulated white noise
1 1 0 1 - A 3rd, 4th, 5th harmonic chord
1 1 1 0 - 8 cycles of linear rising sine wave
1 1 1 1 - Positive half-cycle sine wave
0 0 - RAM 0
0 1 - RAM 1
1 0 - RAM 2
1 1 - RAM 3
Setting Frequency Register 1: Fixed frequency (CW)
Sweep start frequency
1st FSK frequency
Command Opcode = 1
Bits
76543210
Byte 1 -------> Most Significant Byte of Frequency
Byte 2 -------> 2nd Significant Byte of Frequency
Byte 3 -------> 3rd Significant Byte of Frequency
Byte 4 -------> Least Significant Byte of Frequency
Setting Frequency Register 2: Fixed frequency (CW)
Sweep stop frequency
2nd FSK frequency
Command Opcode = 2
Bits
76543210
Byte 1 -------> Most Significant Byte of Frequency
Byte 2 -------> 2nd Significant Byte of Frequency
Byte 3 -------> 3rd Significant Byte of Frequency
Byte 4 -------> Least Significant Byte of Frequency
Table C-2. HP E1340A Command Opcodes and Parameter Formats
240 HP E1340A Register-Based Programming Appendix C