ETS-Lindgren 2090 Controller User Manual

Page 115

Model 2090 Multi-Device Controller

Compatibility:

1090, 2090

Description:

Changes the lower limit of the device. The specified value must be less than
the upper limit and between -999.9 and 999.9. This command effects both
the horizontal and vertical limits, simultaneously. Note that, unlike editing
from the front panel, the 2090 allows setting the limit above the current
position from the GPIB.

Devices:

Towers

Syntax:

LL [+/-] XXX[.X]

Optional for positive values

Necessary for negative values

XXX[.X]

Decimal value for the lower limit to be set in
centimeters.

In N1 mode .X is ignored
In N2 mode .X is optional.
Leading zeros are optional.

Example:

CALL ibwrt (TowerUD%, "LL 208.8")

' Change both the horizontal
' and vertical polarization
' lower limits of the tower to
' 208.8 cm.

See Also:

LL 1050/1060, LL?

LL?

Compatibility:

1090, 2090

Description:

Query the lower limit of the device. LL? 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.

Devices:

Towers

Syntax:

LL?

Response:

[-]XXX[.X]

Value of the lower limit for the current polarization
in centimeters.

Example:

CALL ibwrt (TowerUD%, "LL?")

' Query tower lower limit for
' current polarization

CALL ibrd (TowerUD%, rdbuf$)

' Read response

See Also:

LL 1050/1060, LL 1090/2090

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