Preset Descriptions
Last updated: December 2, 2008
Description
The test set is capable of accepting several different preset commands.
At no time during a preset operation, does transmit power exceed the last user setting of the transmit power. The input power is not set to any value lower than the last user setting of the input power. This is to avoid power spikes on the output and possible receiver damage on the input during transitions associated with preset operations.
Partial Preset
Partial preset saves setup time because measurement setup parameters remain unchanged. This is the recommended way to place the test set in a known condition.
When you fast switch between formats in a fast switching test application the test set behaves as if a partial preset has occurred. The table below lists some key partial preset results.
Example
OUTPUT 714;"SYSTEM:PRESET3" !Command for a partial preset when user in
!remote operation.
SYSTEM:PRESET3 is the recommended command for a partial preset operation. The SYSTEM:PRESET[1] command is not recommended for use at this time.
Press the green Preset key on the front panel to perform a partial preset.
Partial Preset Behavior
|
Function |
Partial Preset Result |
|
Trigger Arm |
no change |
|
Measurement parameters |
no change |
|
Calibration data
|
no change |
|
Enable registers |
no change |
|
Positive Transition Filter registers |
no change |
|
Negative Transition Filter registers |
no change |
|
Contents of RAM |
no change |
|
Contents of output queue
|
no change |
|
Contents of error queue |
no change |
|
Maskable Message Display State
|
no change
|
|
Operating Mode |
Active Cell |
|
Measurements
|
aborted and inactivated |
|
Measurement results |
NAN |
|
Measurement integrity indicator
|
1 = no result available |
|
Transmit Power State
|
ON |
|
Cell Activated State |
ON |
|
Call in progress |
aborted |
|
Call Control Status
|
Idle |
|
Call Counters |
cleared |
|
Call Error Counters
|
cleared
|
|
SACCH
|
cleared
|
|
Pending Service request |
not cleared |
Full Preset
A full preset requires you to select new measurements and configure their parameters. If measurement parameters do not need to be changed, use a partial preset to save time.
Example
OUTPUT 714;"*RST" !Recommended command for a full preset, sets trigger arm to single.
OUTPUT 714;"SYSTEM:PRESET2" !Command for a full preset, sets trigger arm to continuous.
The *RST common command is the recommended command for a full preset operation.
Transmit power is not set to OFF during a full preset, transmit power is set to the default value.
Full Preset Behavior
|
Function |
Full Preset Result |
|
Trigger Arm
|
Continuous (manual operation full preset or SYSTEM:PRESET2 command)
|
|
Trigger Arm
|
Single (remote operation full preset, *RST command)
|
|
Measurement Parameters
|
all set to defaults
|
|
Maskable Message Display State
|
On (manual operation full preset)
|
|
Maskable Message Display State
|
Off (remote operation full preset)
|
Status Preset
The STATUS:PRESET command sets the status system as defined in "SCPI 1995 Volume 2: Command Reference" section 20.7. All of the enable registers are set to 0, all PTR registers are set to 1, and all NTR registers are set to 0.
Example
OUTPUT 714;"STATUS:PRESET" !Presets the STATus subsystem.
|
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