NEWTOKYO SOKUSHIN CO., LTD.

Network Sensor

3-14-34, OUGI, ADACHI-KU.TOKYO.
TEL 03-3855-5911 FAX 03-3855-5921
URL http://www.to-soku.co.jp

CV-374A, CV-374B

Earthquake Observationand Health Monitoring
・All-in-one sensor recording large capacity waveform and LAN connection
・Observation of micro-tremor to strong motion by servo accelerometer
・Recording continuous data and trigger file in a CF card together
・Send seismic information such as maximum value, seismic intensity and predominant period,
and waveform data
・Connect by single LAN cable including power and synchronization (CV-374B)
Built-in CF Card, GPS receiver
Continuous record

Dimension (built-in sensor)
180mm×120mm×100mm＊Photo, CV-374A

CV-374A ： For general network line.
(AC100V power supply is necessary to the main unit)

CV-374B ： For exclusive network line by single LAN cable.
(Power supply and various synchronizations from exclusive HUB)
GPS ANT.

Clock
Tri-axial
ServoAccelerometer(DC to 100Hz)

24bit
ADCPU

GPS
CF Card（MAX. 32GB）
32MB (FROM)
64MB (DRAM)
Ethernet
RS-485（SYNC）

DA
AUTO CAL

Battery(90mins. Battery

POWER(※)

back-up)(※) ・ CV-374A needs AC100V power supply.
・ CV-374B is supplied from Exclusive HUB

Common Specifications CV-374A , CV-374B
Analogue, A/D converter
Input±4.0V, ±10.0V (Option)
Sampling
100, 200Hz
AD converter

24bit

Resolution

Less than 10mGalp-p(Sampling :100Hz / 2000Gal
full scale)Sensor (option: external sensor)
Type
Servo Accelerometer
Component
Tri-axial
Full scale±2000Gal
Bandwidth

DC to 100Hz

Calibration
Frequency

1Hz

Waveform

Sine Wave (100Gal)

Data record
Trigger level
Trigger logic
Pre trigger
Post trigger
Trigger data

0.5 to 100Gal (0.1Gal step)
OR, AND, 2AND
1 to 300 sec.
10 to 300 sec.
Approx.160 hours (1 to 10 min./File)

Continuous data

Approx. 480 days (10 min./File)(CF MEMORY 32GB)

Overwrite format

Delete the old data, overwrite thenew dataMedia

CF card, Max. 32GB
FAT32 format

Wave format

WIN32 compliance

Clock calibration
Accuracy< ±2.5ppm, -30℃ to +75℃
GPS or NTP server
Clock
Slave unit can adjust by the transfer timesynchronization
code
Clock accuracy< ±0.62ppm(GPS)Year to Seconds
Clock function
Daily 0.1 second (no GPS, NTP)
Master/Slave function
Time code
Hour, minute, seconds markPort
RS-485, Max. transmission 1km
Data interlock
Trigger data start / stop
Synchronization
Synchronized within 1msec.
accuracy(When using exclusive HUB)
Communication
Ethernet
10base-T or 100base-TX (automatic change)
Port
1 portProtocoltelnet, ftp, TCP/IP socket
Power supply
AC100V (85 to 264V) / CV-374A
Exclusive HUB / CV-374B

Input

Max.3.6VA (GPS)Internal battery
Lithium battery 6.8V, 0.9A
Battery backup
Approx. 90 min.
Environment
Temperature
0℃ to +50℃
ProofIP65
Dimension and Weight
Case
Cast AluminumDimension
180mm (W) × 120mm (D) × 100mm (H)WeightApprox. 1.5kg
Connector
Water-proof connector
Power consumption

Example of Use
Single point (CV-374A)

Multi point (CV-374B)
GPS ANT.

GPS ANT.

Exclusive HUB JP1000S(Option)

AC85 to 264VLAN Cable

LAN Cable(Master)※1・Acquire the continuous (RTD)
data.
・Retrieve the memorized data inthe CF card.
・Parameter set.

※1

DC12V or
AC100V(with AC adapter)

LAN Cable(Slave)LAN Cable(Slave)Single LAN CABLE makes possible
management of Trigger synchronization,
Sampling synchronization by GPS,
Data communication and power supply.

The specification may change without notification because of the proved product.
3-14-34, OUGI, ADACHI-KU.TOKYO.
TEL 03-3855-5911 FAX 03-3855-5921
URL http://www.to-soku.co.jp

TOKYO SOKUSHIN CO., LTD.

Dated: Jan 2015