GPIB Operation ML24xxA Native Commands
ML2437A/38A OM/PM PN: 10585-00001 Rev. P 8-19
AVGLL (Auto low level averaging)
AVGM (Manual Averaging)
Syntax: AVGLL <s>,<mode>
s: A or B
mode:
OFF
LOW
MEDIUM
HIGH
Remarks: Sets the low level averaging window for the sensor. At resolution
settings of 0.01 and 0.001dB, digital readouts may flicker due to the
high reading rate of the ML243xA. Low level averaging applies a low
pass filter to post-average data readings to achieve a more stable front
panel display without slowing down the response of the meter to larger
changes in level. The three windows for LOW, MEDIUM and HIGH low
level averaging are ±0.01, 0.02, and 0.05 dB.
For example: When a LOW setting of low level averaging is applied
while stepping from 0 dBm to –1 dBm, the meter displays the final
reading within 0.01dB with no delay. The final settling of 0.01dB will
settle over a short subsequent period of time, leading to a stable high
resolution readout.
With a HIGH setting of low level averaging, the settling window is
increased (up to approximately 0.05 dB) and the settling time is longer.
With low level averaging OFF, the meter displays the final reading
instantly with no further settling observed. Any jitter due to noise is
reflected in the displayed reading, which may be inconvenient for high
resolution readings.
Example: AVGLL A,HIGH
Query: AVGLL? <S>
Returned String: AVGLL <S>,<MODE>
Syntax: AVGM <s>
s: A or B
Remarks: Changes the averaging of the sensor to 'Moving' averaging mode from
'Auto' Averaging. The average number is set to the same value that the
'Auto' averaging mode was using internally. If the sensor is not
presently in auto averaging mode, this command is ignored.
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