1587 FC/1587/1577
Calibration Manual
30
6. Press the four keys representing the new password.
7. Press to store the new password.
Use these steps to change the password on a UUT with SN <32980000:
8. While holding down H on the UUT, turn the rotary switch from OFF to
B.
The UUT displays Z .
9. Press once to see the calibration counter.
10. Press again to start the password entry. The UUT displays ????.
The following keys represent the digit indicated below when entering or
changing the password:
= 1 m
Unused
Unused
r = 2
H = 3 = 4 G = 5
11. Press the four keys to enter the old password. If changing the password for
the first time, enter (1), r (2), H (3), and (4).
12. Press r to change the password. The UUT displays //// if the old
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.
13. Press the four keys representing the new password.
14. Press to store the new password.
Restoring the Default Password
If the calibration password is forgotten, the default password () can be
restored using the following steps.
1. Turn the rotary switch from OFF to B.
2. Remove the back case from the UUT. Leave the PCA in the top case.
3. Apply 6.0 V across the battery pads (XBT1) + and – on the back of the PCA.
See Figure 10.
XWWarning
To avoid electrical shock or personal injury, remove the test
leads and any input signal before removing the back case from
the UUT.
4. Short across the keypad on the back of the PCA. See Figure 10. The
UUT should beep. The default password is now restored.
5. Remove the 6.0 V supply and install the back case on the UUT.
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