Operation; Introduction; Power Application; Hp5501B Laser Head Front Panel Controls - HP 5501B Operating And Service Manual

3 OPERATION

3-1.

Introduction

3-2. This section provides operating information for the HP5501B Laser Head. Included are operation
features of the instrument's front and rear panel controls and connectors. Also provided is
supplemental operating information for HP5501A Laser Transducer Systems equipped with
HP5501B Laser Heads.
3-3. Installation instructions for the HP5501B Laser Head are given in
3-4.

Power Application

3-5. The laser head installed is activated when +15 Vdc and -15 Vdc are applied to the unit. ±15
Volts is applied by connecting the power cable (HP10778B or fabricated equivalent) to the rear
panel POWER connector (A1J5). Ensure that the power source is adjusted to conform to the
following requirements before connecting it to the HP5501B:
Measured Voltage +15V ± 0.3 Vdc -15V ± 0.3 Vdc
REPETITIVE POWER-UP CYCLING SHOULD BE AVOIDED. THIS WILL
REDUCE
COMPONENTS.
3-6.

HP5501B Laser Head Front Panel Controls

3-7. Figure 3-1 identifies and describes each of the operating controls, connectors, and indicators.
Refer to Table 2-1 for information regarding the specific power and signal/lines at each of the
connectors.
1. Shutter: The shutter, also known as the aperture ring, allows for three aperture
3-10
THE EXPECTED

Figure 3-1. HP5501B Front Panel Controls

settings: open, reduced, and closed. The open aperture position is used during
normal operation and the reduced aperture is used during alignment of
measurement axes.
NOTE
LIFE OF THE HIGH
HP5501B
Operation
Section 2 of this manual.
VOLTAGE