Instruction manual

Appendix A: Model 2090 GPIB Command Reference Model 2090 Multi-Device Controller
UL?
Compatibility:
1090, 2090
Query the upper limit of the device. UL? returns the limit associated with the
current polarization mode. The value returned is either in N1 (XXX) or N2
(XXX.X) format depending upon the current numeric mode. Negative values
are preceded by a "-" minus sign.
Towers
UL?
[-]XXX[.X]
Example:
CALL ibwrt (TowerUD%, "UL?")
' current polarization
Description:
Devices:
Syntax:
Response:
Value of the upper limit for the current polarization
in centimeters.
' Query tower upper limit for
CALL ibrd (TowerUD%, rdbuf$) ' Read response
See Also:
UL 1050/1060, UL 1090/2090
UP
Devices:
UP
' tower to move up
See Also:
Compatibility:
All
Description:
Instructs the tower boom to move in the Up direction. This movement is
limited by the upper limit.
Towers
Syntax:
Example:
CALL ibwrt (TowerUD%, "UP") ' Instructs the boom of the
DN, ST
UV
Compatibility:
2090
Description:
Changes the upper limit of the device for vertical polarity. The specified
value must be greater than the lower limit for vertical polarization and
between -999.9 and 999.9. NOTE: Unlike editing from the front panel, the
Model 2090 allows setting the limit above the current position from the GPIB.
Syntax:
- Necessary for negative values
Decimal value for the upper limit to be set in
centimeters.
Leading zeros are optional.
' Set vertical polarity upper
Devices:
Towers
UV [+/-] XXX[.X]
+ Optional for positive values
XXX[.X]
In N1 mode .X is ignored
In N2 mode .X is optional.
Example:
CALL ibwrt (TowerUD%, "UV 355.5")
' limit to 355.5 cm
See Also:
UV?
128 © ETS-Lindgren– April, 2006
Revision G– P# 399199