Sensor scan mode, Field align, Sensor scan mode field align – Pelco SPECTRA C3412M-D User Manual

Page 46

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C3412M-D (12/08)

SENSOR SCAN MODE

(Applies only to 35X models.)

Sensor scan mode controls the internal processing of the camera's image sensor. The data
scanned from the image sensor at each field time is used for the internal image control
algorithms and digital signal processing (DSP).

Note: When changing from PROGRESSIVE to INTERLACED, or vice-versa, the camera restarts to
establish the new setting.

There are two sensor scan modes:

PROGRESSIVE (default): Produces a higher quality image by using each line scanned from the
image sensor.

INTERLACED: Produces a slight increase in sensitivity by using blended data from pairs of lines
scanned from the image sensor.

When sensor scan mode is set to INTERLACED, the wide dynamic range and image enhancement
features are automatically disabled. There may be additional effects, such as a degradation of
the signal-to-noise ratio, degradation of the color reproduction, and a loss of motion detection for
presets configured with motion detection.

FIELD ALIGN

(Applies only to 18X, 23X, and 35X models.)

Field align determines whether the camera produces progressive segmented frame output (PsF)
or interlaced frame output. Analog video from the camera is always output in separate fields as
required for compatibility. This feature allows PsF to be recombined by an encoding device
without a time difference between fields, as is typically seen from interlaced analog video
output. Enabling field align requires that the encoding device you are using always combines the
odd and even fields in the specified order.

There are three field alignment settings:

OFF (default): Field alignment is disabled. Use this setting if you are using an analog device/
system or a digital encoder that does not support PsF.

ODD: Arranges the odd field for a particular video frame before the even field for that frame.

EVEN: Arranges the even field for a particular video frame before the odd field for that frame.

Notes:

If you enable field alignment by selecting ODD or EVEN, you must disable any deinterlacing
settings for the encoding device to achieve maximum resolution.

The ODD and EVEN settings require that the sensor scan mode is set to PROGRESSIVE. If field
align is set to ODD or EVEN, the sensor scan mode automatically changes to PROGRESSIVE.

EXIT

SPECTRA IV

LANGUAGE

<SYSTEM INFORMATION>
<DISPLAY SETUP>
<DOME SETTINGS>
ACK ALERT*

RESET CAMERA
CYCLE CAMERA POWER
REBOOT SYSTEM

BACK
EXIT

<CAMERA>
<MOTION>
<POWER UP>
<LINE SYNC>
<PRESETS>
<PATTERNS>
<ZONES>
<WINDOW BLANKING>
<ALARMS>
<AUX>
<TITLE TEXT>
<ALERT>*
<CLEAR>
<PASSWORD>
<CLOCK>
<EVENT>

DOME SETTINGS

TYPE OF LIGHTING
AUTO FOCUS
SURE

FOCUS

ZOOM LIMIT
ZOOM SPEED
LOW LIGHT LIMIT
IR CUT FILTER

LOW LIGHT FOCUS

AUTO IR LEVEL

<ADVANCED SETTINGS>

BACK
EXIT

CAMERA

BACK
EXIT

ADVANCED SETTINGS

SHUTTER SPEED
AGC LIMIT
AUTO IRIS
AUTO IRIS LEVEL
AUTO IRIS PEAK
AUTO SHARPNESS
SHARPNESS LEVEL
AUTO WHITE BALANCE
R GAIN
B GAIN
BACKLIGHT COMP
VIDEO LEVEL
SENSOR SCAN MODE
FIELD ALIGN
E. IMAGE STABILIZER
IMAGE ENHANCEMENT
LOW LUX NOISE REDUCTION
WIDE DYNAMIC RANGE

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