External Trigger Controls - HP 8112A Operating, Programming And Servicing Manual

Operating
I ntroduction
Caution
Caution
This chapter explains the use of all controls, indicators and
connectors on the front and rear panels of the HP 8 1 12A. Figure 4- 1
and Figure 4- 12 show the front and rear panel respectively. Each
group of controls is explained in subsequent sections of this chapter
under the following headings:
• Switching On
• Trigger Mode Selection

• External Trigger Controls

• Control Mode Selection
• Transition Mode Selection
•
Parameter Selection
• Rear Panel
Examples are given in Chapter 5.
Before applying power to the HP 81 12A:
1. Read the red Safety Summary sheet at the front of this manual.
2. Ensure the Line Voltage Selector switches are set properly for
the power source to be used. Refer to Chapter 3 on instrument
installation if necessary.
I
Do not change the Line Voltage Selector switches with the
instrument switched on or with power connected to the rear panel.
3. Ensure that the device under test cannot be overdriven by
the HP 81 12A output ( 1 6 V p-p into 50 !l; 32 V p-p into high
impedance).
4. Ensure that the maximum external voltage applied to the
HP 8 1 12A falls within these limits: -5 V to +5 V de).
&
I
Do not apply an external voltage greater than ±5 V, or electrostatic
discharge to the output connector.
4
Operating
4-1