HP 1GSa/s Digitizing Oscilloscope 16532A manual Setting the PROTECT/UNPROTECT Switch to Unprotect

HP 16532A - Calibration

4-9. Setting the PROTECT/UNPROTECT Switch to UNPROTECT

The effects of ELECTROSTATIC DISCHARGE can damage electronic compo- nents. Use grounded wrist straps and mats when you are performing any kind of service on this module.

The oscilloscope board contains a calibration PROTECT/UNPROTECT switch. This switch must be set to UNPROTECT before calibration can be done. Set the switch to UNPROTECT as follows:

1.Remove power from the instrument. Pull halfway out all of the modules located above the oscilloscope and remove the filler panels and cards located above the oscilloscope. See figure 4-1 for the removal sequence.

Figure 4-1. Endplate Overlap - Top Sequence

2.Remove the oscilloscope module and set the PROTECT/UNPROTECT switch to the UNPROTECT position. See Figure 4-2 to locate this switch.

Figure 4-2. Location of the PROTECT/UNPROTECT Switch

3.Repeat step 2 for every oscilloscope module if this is a multimodule calibration.

4.Reinstall the modules and filler panels in reverse order of steps 1 and 2.

4-3