Agilent Technologies 1141A, Руководство пользователя и сервисное руководство

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18 1141A and 1142A User’s Guide
1 Operating the Probe
Using the Accessories
Adapter Combinations
Figure 8 on page 19 shows the allowed adapter and probe
connections. There are two specific combinations that should not be
used.
CAUTION
Do not attach the ac adapter between an attenuator adapter and the probe. An
attenuator adapter must be terminated by the input resistance of the probe. The ac
adapter isolates the probe input resistance.
CAUTION
Do not cascade two attenuator adapters. The attenuator adapters are designed to
be terminated by the 1 M
Ω
resistance of the probe. The input resistance of the
attenuator adapter is 9 M
Ω
for the 10x adapter and 10 M
Ω
for the 100x adapter.
Connector Compatibility
The following are general connector characteristics for the probe,
adapters, and accessories.
■
The female connectors on the probe, adapters, and other
accessories are designed to mate with 0.030- inch round or
0.0250- inch square pins.
■
The probe, adapter, and extension lead pins are 0.030- inch round.
■
The strip of circuit connection posts provided as an accessory has
0.025- inch square pins.
■
The mini- grabber has a 0.25- inch square pin.
■
The ground connection at the end of the probe and adapters
(where the adapters fasten) accepts an M3 metric screw.
Test Board
The primary use of the test board is to apply test and calibration
signals to the input of the probe or adapters. Specific use of the
test board is covered wherever it applies.