Currrang Auto, Currdet Acdc | Agilent Technologies 66309B, D, 66311B

5 – Front Panel Operation

2. To change the front panel time interval and buffer size for output waveform TINT 0.002 measurements, press Shift, Input. Then press θ until you obtain the TINT

command. Use the Entry keys to enter a value from 15.6 microseconds to 1 second in seconds. Then press Enter.

3.Continue by pressing Shift, Input and θ until you obtain the POINT command. POINT 1024 Press ⊃ to select a different buffer size. The choices are: 1, 2, 4, 8, 16, 32, 64,

128, 256, 512, 1024, and 2048. Then press Enter.

One reason to change the front panel time interval and data points is if the waveform being measured has a period shorter than 3 times the present front panel acquisition time.

4.	For current measurements, press Shift, Input. Then press ⊃ until you obtain the	CURR:RANG AUTO
	CURR:RANG AUTO command. Press Enter to activate autoranging. Two other
	selections are also available. Select the HIGH range when measuring currents
	above 20 mA. Select the LOW range for improved resolution when measuring
	currents below 20 mA. Note that the LOW range is only appropriate for making
	dc measurements.
5.	For output waveform measurements, press Shift, Input. Then press θ until you	CURR:DET ACDC1
	obtain the CURR:DET command. Check to make sure that the ACDC current
	detector is selected. This provides the best accuracy for waveform measurements.
	Only select the DC current detector if you are making dc current measurements

and you require a dc measurement offset better than 2mA on the High current measurement range. Press Enter to activate any changes.

7 – Making DVM Measurements (Agilent 66311D/66309D only)

The front panel DVM measurement function is only active when Output 1 is selected.

As shipped from the factory, DVM measurements are calculated from a total of 2048 readings taken at a

15.6microsecond sampling rate. These parameters are fixed. Therefore, the data acquisition time for a single measurement is about 30 milliseconds. This sampling rate and data acquisition time combined with a built-in windowing function reduces errors due to sampling a non-integral number of cycles of a waveform for frequencies of 47 Hz or greater.

NOTE:	If the front panel display indicates OVLD, the output has exceeded the measurement
	capability of the instrument. If the front panel display indicates -- -- -- -- -- --	, a front
	panel or an GPIB measurement is in progress.

Check that the DVM measurement points are within the DVM measurement capabilities:

The common mode voltage range of the DVM input is −4.5 V to +25 V from either DVM input with respect to the negative output terminal of output 1. The maximum isolation voltage to ground is ±50 Vdc. Refer to chapter 3 under "DVM Connection" for more information on how this affects the DVM’s measurement capability.

Use the Meter menu for making DVM measurements:

Action

Display

1.On the Function keypad press Meter and press θ repeatedly

to access the following DVM measurement parameters:		1
♦	dc voltage	1	<reading>V DC:DVM
♦	rms voltage (ac + dc rms)	1	<reading>V RMS:DVM

66111A, 66309B, 66311B, D specifications

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Agilent Technologies 66309B Making DVM Measurements Agilent 66311D/66309D only, Currrang Auto

Models: 66111A 66309B 66311B D