CONTROLS AND CONNECTORS.

1.2.2. CONTROLS AND CONNECTORS.

All controls and connectors are conveniently located on the panel

of the instrument. See Figure 1-1 for location of controls and connectors

referred to in Table 1-1.

Table 1-1

CONTROLS AND CONNECTORS

(see Figure l-l)

Ref

Name

Use

POWER Switch

Turns power on and off.

RPM Control

Controls flashing rate of light by rotating

fluted rim. Dial is calibrated directly in

revolutions per minute.

Range Switch

Selects any of three RPM (internal oscil -

Iator) ranges, plus three external -input

positions:

RPM Ranges

External Input

110-690 RPM High Intensity 700 RPM max

670-4170 RPM - Med Intensity 4000 RPM max*

4000 -25,000 Low Intensity -25,000 RPM max

CALibration

Indicates correct setting of Calibration

Indicator Lamp

adjustments (Ref. 5) for calibrating RPM

dial to power-line frequency.

HIGH CAL,

Calibration adjustments used for calibra-

LOW CAL

ting RPM dial.

OUTPUT TRIGGER

Trigger pulse available at this jack for

Jack

triggering Strobotac Types 1531 and 1538,

Type 1539 Stroboslave, or Type 1532 Stro -

bolume. (Refer to paragraph 2.9 and 2.10

for connection cables required.)

INPUT Jack

Used for connecting Stroboscope to external

synchronizing signal from electrical device

or mechanical contactor.

Reflector -Lamp

Produces and aims flashing light.

Assembly

Power Cord

Permanently attached six -foot power cord.

For storage, cord is wound clockwise around

range-switch knob and reflector; plug is

secured by sliding it onto holder pin (Ref

10),

Holder Pin

Secures plug-end of power cord when in-

strument is to be scored in case.

`Flashes at 3600 rpm until external signal is plugged in.