Sensor Menu Front Panel Operation
5-6 PN: 10585-00001 Rev. P ML2437A/38A OM/PM
HOLD [RGH]
Allows the operating range of the selected sensor to be set to the desired range. Select a
Range Hold value of 1 to 5, or Auto. When in Auto, the range changes to take the best
measurement automatically. Auto is the default setting following system preset.
SETTLE % [SENSTL]
Settle % per reading is available when the sensor mode is set to Default. The settling
time allows some control over the trade-off between speed and the extent to which a
measurement has settled to its final value. A 1 % settling value relates to
approximately 0.04 dB, 0.5 % relates to 0.02 dB and 0.25 % to 0.01 dB. The default
value after a system preset is 0.1 %, or about 0.004 dB. Increasing the Settle percent to
1 % or more will substantially increase measurement speed.
Calfactor
Allows entry of the calibration correction factor. The calibration factor compensates for
mismatch losses and effective efficiency over the frequency range of the power sensor.
SENSOR
Model ML2438A (dual channel) only. Select the sensor to be configured. Toggles
between Sensor A and Sensor B for all submenu functions.
Table 5-3. Typical Range Hold Values for Diode Sensors
Range Values
Range 1 above approximately –12 dBm
Range 2 -10 to -27 dBm
Range 3 -25 to -42 dBm
Range 4 -40 to -57 dBm
Range 5 below -55 dBm
Note SETTLE% affects GPIB speed. Consider this when optimizing GPIB performance.
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