American Dynamics 1461

OPERATION

Setup

Apply power to the motion detector and associated

cameras, switchers, and monitors. It is normally better to

have power to auxiliary equipment, such as VCR’s, off

during initial setup.

2) If necessary, adjust the switcher to display the camera

video which is to be monitored by the motion detector.

3) Turn all three motion detector toggle switches to the

deactive (-) positions.

4) Turn the DISPLAY switch to active

(+).

Note the twin

vertical bars, as shown in Figure 4, On-Screen Display.

These bars define the rectangular area of the picture within

which motion is detected. The size of this area may be

adjusted using using the front panel screwdriver controls

for vertical (VERT) and horizontal (HORIZ) position (P)

and size (S). Set the sensitive area to cover the region of

the picture within which motion is to be detected.

5) Turn the BYPASS switch to active

(+).

This activates the

four alert functions. Motion in the sensitive area causes:

the visual ALERT LED’s to flash alternately,

the audio beeper to sound,

the auxiliary start relay contacts to close, and

the switcher logic output to go active low.

6) Ensure that the AUTO RESET switch is in the deactive

(-)

‘X

position before proceeding with Step 7. This allows

sensitivity to be adjusted without the interference of an

automatic reset.

7) Sensitivity; the most critical adjustment, is adjusted using

the screwdriver control SENS. The setting should be low

enough to avoid false or unwanted alerts caused by normal

motions such as birds or blowing trees, but high enough to

detect motions of interest. The optimum setting is best

determined by experiment at the site at which the 1461 is to

be used. Start with the as-shipped, midrange setting.

Simulate anticipated motions which should and should not

cause an alert. If the results are unsatisfactory: raise (CW)

or lower (CCW) the sensitivity, reset the unit with the RST

button, and repeat the simulated activity until satisfactory

performance is obtained.

8) Turn the AUTO RESET switch to active

(+).

This is the

normal operating mode. In this mode the unit

automatically resets 12 seconds after detected motion

ceases.

Normal Operation

During normal operation the motion detector should be set

with all toggle switches in the active (+) position. This

displays the detection area enclosed by twin vertical bars, arms

the four action indicators, and enables the auto reset. It allows

the operator to look away from the monitor yet readily locate

the detection area on the screen. Motion alerts will activate all

alert functions. The unit will automatically reset to the

detection mode 12 seconds after the detected motion ceases. If

the operator wishes to turn the alert indicators off and reset

sooner, the manual reset button

(RST)

can be used.

If the motion detector is used on a critical area during a non-

critical time period, such as a doorway at quitting time, the

BYPASS switch may be set to the deactive

(-)

position. In this

mode the LED’s will flash, but the audio signal, the relay, and

the switcher logic will not activate.

DETECTION AREA

Figure 4

On-Screen Display