Calibrate the ASRU Cards

 

Calibrate the ASRU Cards

1   Log on as calibrate.

2   Press Testhead Functs (F3) and then Testhead Power On (F1) to power-up and boot the testhead.

		The testhead requires a 30-minute warm-up before calibration.

3   Place the pin verification fixture on either bank of the testhead that contains a module.

4   Press Testhead Functs (F3) and then Fixture Lock (F5) to lock the fixture onto the testhead.

5   After the fixture is installed on the testhead, execute test 4395 from the Testhead Test Number Entry screen. If you do not specify a module number, the test will repeat for all modules in the config file.

Follow the instructions displayed on the screen. When you see the message:

Do you want to continue? (yes or no):

Type yes (all lowercase), not Y, Yes or YES.

a   When instructed, enter the model number of the multimeter and set the GPIB address of the multimeter.

Table 5    Set GPIB address of multimeter

Multimeter model	Steps
3455A and 3456A DMMs	Use the GPIB switches.
3458A DMM	To read the current GPIB address, press: Blue button Address (Local) to display the address DCV to clear the function To set the GPIB address, press: Blue button C (Auto Cal) to display CAL ƒ several times until ADDRESS appears 11 to display ADDRESS 11 Enter (Recall) to save the address and clear the function
34401A DMM	To read the current GPIB address, turn the DMM on. The address is displayed during the power-on self-test (e.g., ADDR 11). To set the GPIB address, press: Shift (LOCAL) On/Off (<) to display A: MEAS MENU < or > until E: I/O MENU appears V until 1: GPIB ADDR appears ^ until XX ADDR appears > and ^ or V to display 11 ADDR ENTER (Auto/Man) to display CHANGE SAVED and clear the function

b   When instructed, connect the GPIB cable to the system’s GPIB (e.g., the one that goes to the DUT power supplies; there may or may not be a support bay).

c   Connect the Input and Sense ports correctly as shown in Figure 2.

d   Ensure that the Front/Rear switch is in the Front position.

e   After making the necessary connections and answering the questions, test 4395 will complete the calibration.

		Test 4395 appends the old (last) and new values of the ASRU Card’s voltage and resistance reference values, labeled with the module number and time stamp, to the file $AgilentICT_ROOT/diagnostics/th1/ASRU_References

6   When one module calibration is completed, execute test 4395 on the remaining modules. Move the pin verification fixture to the other bank as appropriate.

7   After all modules are calibrated, execute test 4396 to verify that the calibrations were recorded on today’s date.

8   Press Testhead Functs (F3) and then Fixture Unlock (F6) to unlock the fixture.

Figure 2    Calibration connections