Sanyo VCC-MD500 Security Camera User Manual


 
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[4] IRIS Control
Auto Iris
The lens aperture is automatically controlled to
correct the brightness of the average luminance
value of the image.
Manual Iris
This fixes the lens aperture. The aperture position
can be set to a range of 17 levels (1: close - 7:
open) using the Manual IRIS Stop command.
EI ON
The light intensity can be controlled to a fixed level
using an electronic shutter control.
Note:
Executing the EI ON command sets the
shutter speed mode to OFF.
EI OFF
This fixes the electronic shutter. Refer to the
Shutter Speed Control on the next page regarding
fixed values.
Iris Level
The target brightness can be configured to a range
of 0 to 100.
[5] Shutter Speed Control
Prolonged Exposure Mode
The exposure time is a longer mode than 1 field.
The field accumulation time can be configured from
1x to 32x.
However, this cannot be configured during the
following conditions.
When SENSE UP is enabled.
When MOTION settings are enabled.
When EI is ON.
Normal Mode
This is fixed to 1/60 (1/50).
High-Speed Shutter Mode
This can be configured from 1/60 to 1/10000.
Note 1) If flickering is noticeable in regions with
a power supply frequency of 50Hz when
using NTSC, switch to the High-Speed
Shutter Mode (1/100).
Note 2) When switching to the Prolonged Exposure
or High-Speed Shutter Mode, transmit the
“Shutter Speed Set Mode” command after
the “Shutter Long Direct” or “Shutter Short
Direct” command.
SENSUP
If the illumination of the subject decreases, the
Prolonged Exposure Control is automatically
executed along with the AGC Control.
The maximum Field Accumulation Time can be
configured to a range of 1x to 32x.
This cannot be configured during the following
conditions.
When the MOTION settings are valid.
When AGC is OFF.
In addition, the shutter speed mode is set to OFF.
[6] AGC Control
AGC ON
The gain is automatically controlled and light is fixed
to a certain intensity.
The MAX gain of each mode of LOW/NORMAL/
MIDDLE/HIGH is roughly equivalent to the following
gains.
AGC Gain (dB)
LOW NORMAL MIDDLE HIGH
AUTO 9dB 12dB 15dB
COLOR 1.5dB 6dB 10.5dB 15dB
B/W 6dB 9dB 12dB 15dB
AGC OFF
This is the fixed gain mode. The gain value can be
manually configured to 11 steps.*
The gain value of each step is roughly equivalent to
the following gains.
Gain Direct
Configuration Value
Gain
0 0dB
1 3dB
2 6dB
3 9dB
4 12dB
5 15dB
6 18dB
7 21dB
8 24dB
9 27dB
10 30dB
Note: When the Day/Night mode is set to AUTO, the AGC OFF
cannot be set.
Function Descriptions