
Chapter 2 37
Test Descriptions
TEST_13 - TXA Current Drain
Configuring the Rear-Panel DC-Current
Measurement
1. The DC-current measurement must be zeroed before the
measurement. Access the test system’s TESTS screen by pushing the
TESTS key on the front panel.
2. Position the cursor at the AF ANL field under To Screen and select
it.
3. Position the cursor at the DC Current field and select it (this should
be done before any current is applied to the test system’s
measurement terminals). The dc-current measurement is now
zeroed.
4. Use a power supply that provides the appropriate voltage and
current for your MSUT.
5. Connect the positive lead of the power supply to the positive
terminal (banana) of the dc-current measurement connector on the
lower-left rear panel of the test system.
6. Connect the negative terminal (banana) of the dc-current
measurement connector to the positive terminal of the mobile unit’s
supply input.
7. Connect the negative terminal of the power supply directly to the
negative terminal of the mobile unit’s supply input.
8. The software will automatically measure the current passing
through the rear-panel connection. Be sure that there is no GPIB
power supply configured in the External Devices screen of the test
system.
Pass/Fail Limits Used
• 16. TXA Current Drain @Levels 0-3 (Amps)
• 17. TXA Current Drain @Levels 4-7 (Amps)
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