Agilent Technologies Ininiium 9000 Dokumentacja Pobierz pdf (Strona 52)

Chapter 4: Testing Performance

Offset Accuracy Test

CAUTION Ensure that the input voltage to the oscilloscope never exceeds ±5 V.

Specifications

Equipment Required

The offset accuracy specification consists of two terms: offset gain and zero error. The offset gain

characteristic is ±1.25% of channel offset and the zero error characteristic is ±1% of full scale. The

offset accuracy test procedure tests the zero error and offset accuracy.

Procedure

Zero Error Test 1 Disconnect all cables from the scope channel inputs.

2 Press Default Setup, then configure the scope as follows:

a Pull down the Setup menu and select Acquisition.

Let the oscilloscope warm up before testing

The oscilloscope and other equipment under test must be warmed up (with the oscilloscope

application running) for at least 30 minutes prior to the start of any performance test.

Offset Accuracy ±(1.25% of channel offset + 1% of full scale + 1 mV)

50 Ohm Input Impedance: Full scale is defined as 8 vertical divisions. Magnification is

used below 10 mV/div. Below 10 mV full scale is defined as 80 mV. The major scale set-

tings are 5 mV, 10 mV, 20 mV, 50 mV, 100 mV, 200 mV, 500 mV and 1 V.

1 MOhm Input Impedance: Full scale is defined as 8 vertical divisions. The major scale

settings are 5 mV, 10 mV, 20 mV, 50 mV, 100 mV, 200 mV, 500 mV, 1 V, 2 V, and 5 V.

Description Critical Specifications Recommended

Model/

Part Numbers

Digital Multimeter DC voltage measurement accuracy better than ±0.1% of

reading

Agilent 34401A or

Agilent 3458A

Cable Assembly

(2 required)

50 characteristic impedance, BNC (m) connectors Agilent 8120-1840

DC Power Supply 100V Agilent 6614C

Adapter BNC Tee (m)(f)(f) Agilent 1250-0781

2 Adapters 2 BNC (f) to dual banana Agilent 1251-2277

1 2 ... 47 48 49 50 51 52 53 54 55 56 57 ... 165 166

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Agilent Technologies Ininiium 9000 Dokumentacja Strona 52