Sanyo VCC-MD800 ユーザーズマニュアル

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⁃

The lens aperture is automatically controlled to 

correct the brightness of the average luminance 

value of the image.

⁃

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.

・

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.

・

This fixes the electronic shutter. Refer to the 

Shutter Speed Control on the next page regarding 

fixed values.

⁃

The target brightness can be configured to a range 

of 0 to 100. 

⁃

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.

⁃

This is fixed to 1/60 (1/50).

⁃

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.

⁃

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.

⁃

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)

AUTO

—

9dB

12dB

15dB

COLOR

1.5dB

6dB

10.5dB

15dB

B/W

6dB

9dB

12dB

15dB

⁃

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.

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.