286
8163A/B, 8164A/B & 8166A/B Mainframes Programming Guide
8
GPIB Command Compatibility List
Changed Query Result Values
on page -286 details queries that respond with different return
codes than the old instruments.
Table 14
Queries with Different Result Values
Command
Change
Affects
*IDN?
Returns new instrument and module identifiers.
Both
*OPT?
Returns new module options.
Both
*TST
Selftest result codes are completely new.
0 still means passed.
Both
A head adapter is not overwritten with the head when it is
inserted.
8153
SENS:POW:UNIT?
Returns W|DBM not a number.
8153
SOUR:POW:WAV?
Returns LOW|UPP|BOTH|EXT and not the wavelength; use
SOUR:WAV? to query the wavelength. SOUR:WAV:FIXED1?
returns the wavelength of the first laser and
SOUR:WAV:FIXED2? returns the wavelength of the second
laser. For the HP 8153A, SOUR:POW:WAV? returned the
wavelength of the active laser.
8153
SYSTem:ERRor?
Same functionality but different numbers and errors are
returned for instrument specific errors.
8153
SOURce:AM:SOURce?
Returns different enum values than the HP 8167/8.
8167/8