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Specifications
*
The specifications and appearance of this unit are subject to change for purposes of improvement without prior notice.
VN-H257U VN-H237U
Camera
section
Image sensor 1/3-inch Square-Pixel Progressive Scan CMOS (elementary color filter)
Effective pixels
Approximately 2,120,000 pixels
1944 (H) x 1092 (V)
Minimum illuminance
of subject
(50 %, AGC High, 1/30 s)
Color: 0.3 lx (typ.)
Black and White : 0.03 lx (typ.)
(50 %, AGC High, 1/30 s)
Color: 0.3 lx (typ.)
Black and White : 0.25 lx (typ.)
Monitor output
75 Ω, 1.0 Vp-p
NTSC or PAL (switch selectable)
Audio input
Input
Can connect to a microphone that has a
plug-in power system
–
Reference voltage DC 2.47 V(typ.) –
Impedance 2.2 kΩ (typ.) –
Audio output Line OUT (200 Ω, Max 1.9 Vp-p) –
Network
output
Image compression format
JPEG, H.264 High Profile, H.264 Baseline Profile, MPEG-4
Frame size
1920 × 1080
1280 × 960
1280 × 720
640 × 480
640 × 360
320 × 240
Audio compression
formats
μ-Law (64 kbps), AD/DA 16 bits,
Fs = 8 kHz, monaural
–
Network interface
RJ-45
100BASE-TX/10BASE-T/FULL/HALF/Auto-negotiation enabled
Alarm input
No-voltage a contact input, PNP
open collector input, low level, latch/
momentary (500 msec or longer) (1 mA
circuit current at low level, and 3.3 VDC
applied voltage at high level)
–
Alarm output
NPN open collector-output (16 VDC safe
excitation voltage, and 30 mA allowable
sink current)
–
Alarm record 16 MB
Lens
Focal length f = 3 mm to 9 mm f = 2.8 to 10.5 mm
Maximum aperture ratio
F1.2 (f = 3 mm) to F2.1 (f = 9 mm) F1.2 (f = 2.8 mm) to F2.6 (f = 10.5 mm)
Aperture range F1.2 to F360 F1.2 to F360
Zoom ratio 3 x 3.75 x
LAN
standards
Standards Compliant with IEEE802.3, IEEE802.3u and IEEE802.3af
Communication
protocol
TCP/IP, UDP/IP, FTP, ICMP, ARP, DHCP, SNTP, HTTP, SMTP, RTP, RTSP, IPv4,
IPv6, DSCP, HTTPS, SNMP
General
Power supply voltage
AC24 V 50 Hz/ 60 Hz, or PoE (DC-48 V)
PoE(DC-48 V)
Current consumption
AC24 V 0.5 A, or PoE 150 mA (7.2 W) 120 mA
Ambient temperature
-10 °C to 50 °C (Operation)
0 °C to 40 °C (Recommended)
Ambient humidity 20 %RH to 90 %RH (without condensation)
Mass Approx. 480 g Approx. 450 g
Option (sold separately)
Ceiling mount bracket (WB-S2205)
LST1234-001D
350
83.5
46
20
10
7.7
117
SR42
111
4.5
87.5
4.5
83.5
46
4.5
4.5
External dimensions (unit: mm)
Hole in the ceiling (unit: mm)
Front of the camera
Φ
111 (camera body)
Mounting hole for a screw
Mounting hole for a screw
Φ
30 (cable hole)
Pan adjustable
range
Direction cables were pulled out
Mounting hole for a screw
Mounting hole
for a screw
Cables Troubleshooting
Symptom Causes and Countermeasures
Images on the monitor are dark
If you connect the monitor output (RCA terminal) inside the dome cover to the test
monitor while the monitor output cable on the bottom is connected to video recording
equipment or another monitor, images may be dark.
Disconnect the monitor output cable from the video recording equipment or another
monitor. Alternatively, set the terminal of either one of the equipments to “OPEN”.
After adjusting the image, restore the original condition.
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Movement of network image is not
smooth
If the monitor image output is turned ON, a lower frame rate is set for network images.
If you turned the monitor image output to OFF, set the frame rate again.
(
☞
“Instructios (Setting)” - “Internet Explorer Setting” - “Encoding Page”)
•
•
No monitor image is output. The image output may be turned Off on Internet Explorer.
Check the monitor output setting.
The external mic sound is not heard.
Check the MIC connection.
Is the audio setting turned off? (☞ “Instructions (Setting)” - “Audio Page”)
•
•
Lens is out of focus Is the focus adjustment gear engaged? Check the location of the catch.
Audio cable connection
(VN-H257U)
Alarm I/O cable connection (VN-H257U)
Alarm input
Connect an infrared sensor, door sensor, metal
sensor, a manual switch or other device.
To avoid noise entering the internal circuit, enter the
non-voltage contact signal in the Alarm IN terminal.
Do not supply voltage.
The alarm can be set to be activated during close
contact (MAKE) or during open contact (BREAK)
can be set from the menu.
The alarm signal should last for at least 500 msec. If
the alarm signal is short, it may not be recognized.
Input conditions
Connect non-voltage a contact or open collector
output circuit
(For details on how to set polarities, please refer to
“Instructions (Setting)”.)
Low level terminal current below 1 mA
High level terminal current 3.3 V
3.3 V 1 mA
VCC
OUT
G
G
OUT
R
G
DC3.3 V
This
camera
Input 1 or
Input 2
(Alarm input equivalent circuit)
Sensor example (1)
Sensor example (2)
Relay switch or
other devices
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Alarm output
Connect an alarm device, indicator, lighting, buzzer or
other device.
An alarm output signal is an open collector output.
You can configure the menu to set the alarm to
sound when contacts short circuit (MAKE) or
when the contacts are open (BREAK). (Pressure
resistance lower than 16V, 30 mA)
This terminal has different polarities. The output
voltage at the positive terminal must always be
higher than the output voltage at the negative
terminal. Otherwise, the circuit may be damaged.
Output conditions
Equivalent to NPN open collector output
(For details on how to set the output logic, please
refer to “Instructions (Setting)”.)
Safe excitation voltage: DC16 V or lower
Allowable surge current: 30 mA
Momentary (100 ms to 5000 ms) output
(For details on how to set the time, please refer to
“Instructions (Setting)”.)
IN
R
DC12 V
G
G
This
camera
Output 1 or
Output 2
(Alarm output equivalent circuit)
Alarm device
example
Note
Connect the G terminal cable of this camera to the
GND of the alarm device.
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* For connecting the Alarm I/O cable, refer to [Cabling] (☞ page 2).
1
2
3
4
Cable type Color Signal name
1 Monitor output cable (Common)
2 Power cable
(VN-H257U)
Red AC 24 V
Black AC 24 V
3 Alarm I/O cable
(VN-H257U)
Black
Red INPUT 1 (ALARM)
Brown INPUT 2 (ALARM)
Orange OUTPUT 1 (ALARM)
Yellow OUTPUT 2 (ALARM)
Black GND (ALARM)
4 Audio cable
(VN-H257U)
Brown
White MIC IN
Yellow GND (MIC IN)
Black
White LINE OUT
Yellow GND (LINE OUT)
Connecting the power cable to AC 24 V source
Conductor
diameter (mm)
1.0 mm dia
or more
1.6 mm dia
or more
2.0 mm dia
or more
Max cable
distance (meters)
(Reference value)
90 240 370
Note
For safety reasons, turn on the power only after
confirming that all the connections are completed.
Be sure to turn off the camera before connecting
cables.
If you use both the AC 24 V power cable and the
PoE-based LAN cable simultaneously, the camera
may fail. Always supply power using either method.
•
To use an AC 24 V power supply, remove the factory-
installed tape from the power cable, connect to an AC
24 V power supply, and wrap the connector with new
insulation tape.
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LAN cable
When connecting to a switching hub:
Use a straight cable.
When connecting to a computer:
Use a crossing cable.
A 100-meter or less length and Category-5 or higher
grade STP (shielded) cable is recommended.
Note
The crossing cable may not be used for some
computer models. Check the LAN specifications of
the computer when you directly connect this unit to
the computer.
Alarm I/O cable
A 50-meter or less length shielded cable is
recommended.
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Connect the audio cable for an audio device.
Audio cable (Brown and White) (MIC IN) : Connect to a condenser microphone that has a plug-in power
system, etc.
Audio cable (Black and White) (LINE OUT) : Connect to a speaker with a built-in amp, etc.
Memo
A shielded audio cable is recommended.
* For the location to connect the audio cable, refer to [Cabling] (☞ page 2).
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VN-H257U/VN-H237U
EN_VN-H237_001D_Non-Mask.indb 4EN_VN-H237_001D_Non-Mask.indb 4 5/24/2012 2:24:07 PM5/24/2012 2:24:07 PM