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OPERATING NOTES
PAN AND TILT FUNCTIONS
Controller Type Pan Tilt
Fixed speed Speed determined by controller Speed determined by controller
Variable speed
Turbo Mode
Preset Mode
0.1 to 80° per second, depending on joystick position
150° per second
250° per second
0.1 to 40° per second, depending on joystick position
200° per second
Does not affect the tilt speed
NOTE:
For American
Dynamics controllers with
only 32 presets, set switch
SW1-7 on the dome drive in
the ON position. When
SW1-7 is ON, preset
99 becomes 32
98 becomes 31
97 becomes 30
96 becomes 29
95 becomes 28
93 becomes 26
92 becomes 25
91 becomes 24
90 becomes 23
89 becomes 22
88 becomes 21
If the limit stops are turned
off (refer to the
Limit Stops
section), presets 23-26 can
be used as regular presets.
If the proportional pan mode is enabled (refer to
Proportional Pan
in the
Programming
section), the pan and tilt speeds will depend on the amount of zoom. At telephoto zoom
settings, the pan and tilt speeds will be slower for a given amount of joystick deflection than
at wide zoom settings. This keeps the image from moving too fast on the monitor when
there is a large amount of zoom. This slowing does not happen when going to a preset, but
does occur in turbo mode when high zoom is selected. The minimum pan and tilt speeds
are 0.1 degree per second at full zoom.
AUTO FLIP
When the camera tilts downward and goes just beyond the vertical position, the dome
rotates 180 degrees. When the dome rotates (flips), the camera starts moving upward as
long as you continue to hold the joystick in the down position. Once you let go of the joystick
after the dome rotates, joystick control returns to normal operation. The auto-flip feature is
useful for following a person who passes directly beneath the camera. Refer to
Auto Flip
in
the
Programming
section.
SCAN SPEED
Scan speed is adjustable from 1 to 40 degrees per second through the programming menu.
PRESET FUNCTIONS
The Spectra II dome is capable of going to 64 preset locations, each with a 20-character
label. The presets are numbered 1-32 and 35-66. Refer to the documentation for your
control system for programming presets.
When a preset operation is performed, the amount of error in moving to the pan and tilt
position is 1/2 degree. If you command the dome to go to an undefined preset, erratic
operation may result.
Presets 33 and 34 are fixed commands, meaning that you cannot program them. Preset 33
is the “flip” command, which will pan the dome drive 180 degrees. Preset 34 is the “pan zero”
command, which will direct the dome drive to the factory-determined zero reference point.
RANDOM, FRAME, AND AUTO SCANNING
Call preset 97 (30) to start random scanning. Call preset 98 (31) to activate frame scanning
(three seconds of scanning followed by a three-second pause). Call preset 99 (32) to start
auto (continuous) scanning. Scan limit stops are controlled by software. Refer to the
Limit
Stops
section to program the scan limit stops. When the dome reaches a scan limit stop, it
reverses direction. Call preset 96 (29) to stop a scan. Any pan/tilt or lens command also will
stop a scan.
ZONES
The Spectra II dome is capable of eight zones, each with a 20-character label. Depending
on the controller, you can define the zone size and define any zone as “blanked” for video
when the camera pans into the zone area. If zone labels are turned off, the system displays
the message, VIDEO BLANK, to indicate the video is being blanked and is not failing.
(Refer to
Zone Blank
in the
Programming
section for instructions.)
Pelco Manual C2423M (5/00) 5