User Manual

1587 FC/1587/1577

Calibration Manual

Meter Keys Used in the Calibration Steps

The Meter keys behave as follows when performing the Calibration Adjustment

Procedure. This may be of help determining why a calibration step is not

accepted and for determining the input value without referring to Table 6.

H Press and hold to show the measured value. The measurement value

is not calibrated so it may not match the input value. This is normal.

 Press and hold to display the required input amplitude.

 Press and hold to display the frequency of the required input.

G Store the calibration value and advance to the next step. This key is

also used to exit the calibration mode after the calibration-adjustment

sequence is complete.

Calibration Adjustment

Use the following steps to make calibration adjustments to the UUT. Complete

the adjustment procedure before turning the UUT off; otherwise, the new

calibration constants will not be saved.

1. While holding down , turn the rotary switch from OFF to F. The UUT

displays Z .

2. Press  once to see the calibration counter, for example, 0001.

3. Press  again to start the password entry. The UUT displays ????.

4. Press four keys to enter the password.

5. Press  to go to the first calibration step. The UUT displays 0001 if the

password is correct. If the password is not correct, the UUT emits a double

beep, displays ???? and the password must be entered again. Repeat step 4.

6. Use Table 6, Table 7, or Table 8 according to the serial number and model of

your Meter. Apply the input value listed for each calibration adjustment step.

For each step, position the rotary switch and apply the input to the terminals

as indicated in the table.

7. After each input value is applied, press G to accept the value and proceed to

the next step (0002 and so forth).

Note

After pressing G, wait until the step number advances before

changing the calibrator source or turning the rotary switch. If the

rotary switch is not in the correct position, or if the measured value is

not within the anticipated range of the input value, the UUT emits a

double beep and will not continue to the next step. Some adjustment

steps take longer to execute than others (10 to 15 seconds). For

these steps, the UUT will beep when the step is complete. Not all

steps have this feature.

8. After the final step, the display shows  to indicate that the calibration

adjustment is complete. Press G to go to meter mode.