VXI SM8000 - Manual (Page 66)

VXI Technology, Inc.
66 SM8000 Series Programming
83h
Command Name Query Maximum Attenuation
Command Format 83h
Description The Query Maximum Attenuation command returns the maximum attenuation setting
in a 2-byte (16-bit) format.
Example The following example shows how to translate the HIGH_BYTE-LOW_BYTE
returned value into a dB attenuation value:
1. 0Dh & 6Fh = 0D6Fh HIGH_BYTE and LOW_BYTE value to
hexadecimal value.
2. 0D6Fh = 3439 Convert hexadecimal value to an integer
decimal value.
3. 3439 / 100 = 34.39 Divide by 100 to convert to dB value.
89h
Command Name Query Calibration Wavelength
Command Format 89h
Description The Query Calibration Wavelength command returns the calibration wavelength value
in a 2-byte (16-bit) format. The calibration wavelength is an integer value that
represents the wavelength at which the attenuator was calibrated.
Example The following example translates the HIGH_BYTE-LOW_BYTE returned value into
a decimal integer value:
1. 05h & DCh = 05DCh HIGH_BYTE and LOW_BYTE value to
hexadecimal value.
2. 05DCh = 1500nm Convert hexadecimal value to an integer
decimal value for wavelength (nm).