Sony SNC-VM641 Installation Manual Download Page 2

Installing the Camera 

1

  Remove the dome casing.

  Loosen the screw with the wrench (supplied).

  Turn the dome casing anticlockwise, and remove it from the camera unit. 

When the screw catches on the screw hole, pull up the screw.

2

  Install the supplied bracket on the ceiling or wall.

Refer to “Mounting screws” for screws to be used.

3

  Fix the supplied wire rope to the camera unit and the ceiling or wall.

  Fix the wire rope with the supplied M3 screw to the hole for the wire rope 

on the bottom of the camera unit.

 

Pass the wire rope between the wire rope guides.

  Fix the wire rope to the ceiling or wall.

4

  Attach the camera unit to the bracket.

  Align the projection on the top and bottom of the camera’s card slot with 

the bracket mounting screw hole on the bracket.

Turn the camera unit lightly in the direction of the arrow (clockwise 
rotation), then lock the temporary tightening hook of the camera (3 
positions).

Turn the camera in the rotational direction until it completely stops and 
tighten the camera unit mounting screws in the order of 1, then 2.

Notes

Be sure to tighten the camera unit mounting screws in the order of 1, then 2. 

 

ˎ

Otherwise, the camera unit may not be secure and could fall.
If you cannot use screws on a ceiling or wall, or if you want to make the 

 

ˎ

camera less conspicuous, use the YT-ICB600 in-ceiling bracket (optional) with 
which you can mount the camera on the ceiling. 
When you install the camera with the in-ceiling bracket, tighten the fixing 
screw on the side brackets to the 

 position. Refer to the in-ceiling bracket 

Installation Instructions for details.

Adjusting the Camera Direction and Coverage 

You can adjust all pan, tilt and rotation positions. There is no screw for rotation 
position.
Turn the lens case to rotate the camera.
You can invert the image by using the setting menu.

1

  Loosen the camera head fixing screw.

  Loosen the tilt screws (2 positions).

Loosen the pan screws (2 positions).

2

  Adjust the camera to turn the lens in the desired direction.

3

  Tighten the camera head fixing screw to fix the camera. (4 positions)

4

  Slide the ZOOM/FOCUS switch to W/T to adjust the zoom. 

5

  Hold down the ZOOM/FOCUS switch for a moment to automatically 

adjust the focus.

6

  Repeat steps 1 to 5 until the coverage and the focus are determined.

Notes

When you adjust the camera head angle without loosening camera head 

 

ˎ

fixing screw, an internal part may be damaged.
Be sure to turn off the setting of superimposing when adjusting the focus.

 

ˎ

If you cannot achieve satisfactory focus with holding down the ZOOM/FOCUS 

 

ˎ

switch due to the shooting environment, slide the ZOOM/FOCUS switch level 
to N/F to focus manually.
Poor focus may also be caused by the dome case assembly. Readjust the focus 

 

ˎ

using the system menu.  
For details, refer to the User's Guide of the equipment.

Notes

When the dome casing is attached it may be visible in the monitor 

 

ˎ

depending on zoom and rotation. Also, distortion might be observed in 
images shot outside the specified optical area.
Do not turn the tilt screw more than 360 degrees and pan screw more than 

 

ˎ

2-3 turns, as they may become loose and fall out.

Attaching the Dome Casing 

1

  Align the notch on the dome casing with the convex part on the rear of 

the camera unit, then turn the dome casing in the direction of the arrow.

2

  Tighten screws.

3

  Remove the protecting film on the dome cover.

Connection

Connecting to the Network

Connect the LAN connector of the camera to a PoE* supported device (such as a 
hub) using the network cable (straight cable).
The electrical power is supplied through the network cable. For details, refer to 
the instruction manuals of the PoE supported devices.

(* PoE: The acronym for Power over Ethernet. IEEE 802.3af standard compliant 

devices.)

For SNC-VM641, it is possible to connect the LAN port of the camera to a router 
or hub in the network using a commercially-available network cable.

Connecting the Power Source

The camera can be powered in the following ways. 

12 V DC or 24 V AC (Either voltage supported by SNC-VM641 only.)

 

ˎ

Power supply equipment pursuant to IEEE802.3af (PoE* system)

 

ˎ

*PoE means Power over Ethernet.

Note

Do not turn off the camera immediately after turning it on. Wait for at least five 

 

ˎ

minutes before turning off the camera.
Do not connect the power input cable if power is supplied by a PoE system.

 

ˎ

Connecting to the power supply equipment pursuant to 

IEEE802.3af

The power supply equipment pursuant to IEEE802.3af supplies the power 

through the network cable. For details, refer to the Instruction Manual of the 

equipment.

Connecting to 12 V DC or 24 V AC source

Connect the power input cable of the camera to a 12 V DC or 24 V AC source.

Use a 12 V DC or 24 V AC source isolated from 100 to 240 V AC. Each usable 

 

ˎ

voltage ranges are as follows.

12 V DC: 10.8 V to 13.2 V
24 V AC: 19.2 V to 28.8 V
-  In the USA, The product shall be powered by a UL Listed Class 2 Power 

Supply Only.

-  In Canada, The product shall be powered by a CSA certified Class 2 Power 

Supply Only

Use UL cable (VW-1 style 10368) for these connections.

 

ˎ

Recommended cable
DC 12 V:

CABLE (AWG)

#24

#22

#20

Max. length (m (feet))

9 (29.5)

15 (49.2)

23 (75.5)

AC 24 V:

CABLE (AWG)

#24

#22

#20

Max. length (m (feet))

37 (121.4)

63 (206.7)

92 (301.8)

Connecting the I/O Cable (SNC-VM641)

Connect the wires of the I/O cable as follows:

Wiring diagram for sensor input

Mechanical switch/open collector output device

Camera inside

3.3 V

2.2 KΩ

Sensor input +

GND

Mechanical switch

Open collector 
output device

Outside

or

GND

GND

10 KΩ

10 KΩ

10 KΩ

(GND)

Sensor input −

Wiring diagram for alarm output

R

Camera inside

Alarm

Magnet relay –

24 V AC  

24 V DC,  

1 A or less

Alarm Output –

Outside

5 V

Circuit example

GND

E

Bracket 
(supplied)

Ceiling

Projection

Wire rope

Bracket 
mounting 
screw hole

2

3, 4

Dome casing

wrench

1

Ceiling

Temporary 
tightening hook  
(3 positions)

Wire rope 
(supplied)

Temporary 
tightening 
hook (3 
positions)

M3 

screw 

(supplied)

Camera unit 

mounting 

screw (2)

Guide

F

Lens case

G

 mark

H

Ø148 (5 

7

/

8

)

108 (4 

3

/

8

)

Specifications

Compression
Video compression format

JPEG/H.264

Audio compression format

G.711/G.726/AAC

Maximum frame rate

60 fps

Camera
Signal system

NTSC color system/PAL color system 
(switchable)

Image device

1/2.8type CMOS (Exmor R)
Effective number of pixels: Approx. 2,130,000

Synchronization

Internal synchronization

Horizontal resolution

700 TV lines (monitor display ratio 4:3)

Video S/N

More than 50 dB (Auto gain control maximum 
rate 0 dB)

Minimum illumination

View-DR Off/VE*Off/Auto gain maximum rate
MAX/30 IRE (IP) /30 fps
F1.2/Color: 0.006 lx, Black & White: 0.005 lx

* VE stands for Visibility Enhancer.

Lens
Focal length

3.0 mm to 9.0 mm

Maximum relative aperture

F1.2 to F2.1

View angle

1920 × 1080 (aspect ratio 16:9)
Vertical: 56.9° to 20.1°
Horizontal: 105.3° to 35.6°

Movable angle

Pan: −192° to +192°
Tilt: −7° to +75°
Rotation: −99° to +99°

Minimum object distance

300 mm

Interface
LAN port (PoE)

10BASE-T/100BASE-TX, auto negotiation (RJ-45)

I/O port (SNC-VM641 only)

Sensor input: × 2, make contact, break contact
Alarm output: × 2, 24 V AC/DC, 1 A
(mechanical relay outputs electrically isolated 
from the camera)

SD memory card slot

Video output

VIDEO OUT: BNC, 1.0 Vp-p, 75 ohms, 
unbalanced, sync negative

Microphone input*

Minijack (monaural)
Plug-in-power supported (rated voltage: 2.5 V DC)
Recommended load impedance: 2.2 kΩ

Line input*

Minijack (monaural)

* The microphone input and the line input are switchable with operating menu.

Line output

Minijack (monaural), Maximum output level:  
1 Vrms

Others
Power supply

SNC-VM641: 

12 V DC ±10%
24 V AC ±20% 50 Hz/60 Hz
IEEE802.3af compliant (PoE system)

SNC-EM641: 

IEEE802.3af compliant (PoE system)

Power consumption

6.0 W max.

Operating temperature

Start temperature: 0°C to 50°C (32°F to 122°F)
Working temperature: −10°C to +50°C (14°F to 
122°F)

Storage temperature

–20°C to +60°C (–4°F to +140°F)

Operating humidity

20% to 80% (no condensation)

Storage humidity

20% to 80% (no condensation)

Dimensions (diameter/height) 

148 mm × 108 mm (5 

7

/

8

 inches × 4 

3

/

8

 inches)

Mass

Approx. 835 g (1 lb 13 oz) (excluding cable or 
bracket)

Supplied accessories

Bracket (1), Template (1), Wire rope (1), Camera 
unit mounting screw M3 (1), Wrench (1), Audio 
cable (1), BNC cable (1), Safety regulation, I/O 
cable (1) (SNC-VM641 only), Power input cable 
(1) (SNC-VM641 only)

Optional accessory

In-ceiling bracket  YT-ICB600*

* Using the fixture position 

 on the bracket.

Dome Cover Smoked  YT-LD601S
Design and specifications are subject to change without notice.

Unit: mm (inches)

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