Agilent Technologies Ininiium 9000 Dokumentacja Pobierz pdf (Strona 57)

Chapter 4: Testing Performance

Offset Accuracy Test

Set the channel 1 offset value to 60.0 mV and the impedance to 50 W (or to an offset of 2 V and

the impedance to 1 M

W if this is your second pass through this test and you are using the 1 MW input

impedance version)

by:

a Pull down the Setup menu and select Channel 1 or click the Channel 1 setup icon.

b Click the Offset control arrows to change the offset value or click on the offset value and enter

60.0 mV in the dialog box (or 2 V for the 1 M

W impedance version).

c Select the 50

W radio button in the Impedance section of the Channel 1 Setup dialog box.

Set the DC supply voltage (External Supply Setting) to +60.0 mV (or +2 V for the 1 MW

version of this test).

18 Press the Clear Display key on the scope, wait for the #Avgs value (top left corner of screen)

to return to 256 and then record the DMM voltage reading as V

DMM+

and the scope Vavg

reading as V

Scope+

in the Offset Accuracy Test section of the Performance Test Record (either

the 50 W or the 1 MW version depending on which version of the test you are on). Fill in the

error+

column by using the following equation:

error+

= V

DMM+

- V

scope+

error+

must be within the limits specified by the corresponding Offset Accuracy Limit listed

in the table.

Channel 1

setup icon

1 2 ... 52 53 54 55 56 57 58 59 60 61 62 ... 165 166

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Agilent Technologies Ininiium 9000 Dokumentacja Strona 57