Masibus DDU-24, User Manual

Page: 8 / 51

Model: DDU-24/26
Doc. Ref. no. : - m06bom101
Issue no. 09
Page 8 of 51 User’s Manual
2.2 Time Signal Input
Input Description Physical Interface
Serial RS485

Protocols:
NMEA-0183[RMC] / NGTS/ T
– Format

Baud Rate: 9600/19200
Plug-in type Connector[Standard 4-pin MSTB Type]
[Cable Size:2.5 sq.mm]
Serial RS232
RF Wireless Input

Wireless frequency: 866 MHz

Line of site distance:
Approx 600 meters
(Depends on Site Conditions)
Wireless
2.3 Time Signal Output
Output Description Physical Interface
Serial RS485

Protocols:
NMEA-0183[RMC] (only Time and
Date Parameter Present in frame
other Parameter as indicated zero)

Baud Rate: 9600/19200
Same connector as Input
Serial RS232
RF Wireless
Output

Wireless frequency: 866 MHz

Line of site distance:
Approx 300 meters
(Depends on Site Conditions)
Wireless
Note: If DDU-24/26 is in sync using Serial [RS232/RS485] than do not use Serial
[RS232/RS485] for Retransmission.
Isolation (Withstanding voltage)

Between primary terminals* and secondary terminals**: At least 1500 V AC for 1 minute

Between primary terminals* and grounding terminal:At least 1500 V AC for 1 minute

Between grounding terminal and secondary terminals**: At least 1500 V AC for 1 minute
* Primary terminals indicate power terminals
** Secondary terminals indicate RS232/485.
Insulation resistance:
20MΩ or more @ 500 V DC between power terminals and grounding terminal
DDU-24-XP/DDU-26-XP
Mechanical Mounting
Enclosure Protection IP65 Mounting
Wall mounting with the help of 4 NOS
bolts of size M8
Size [ H x W x D] [in mm]
180mm X 350mm X 85mm ( for DDU-24)
180mm X 455mm X 85mm ( for DDU-26)
Cable entry size/no
3/4” ET-4 Nos
Area Classification Zone 1&2 Plug Details
1 Blind Plug & 1 DC Cable gland
3/4‟‟ET
Enclosure Flameproof (Explosion proof) Ex-d
Weight (approx)
5.4Kg (for DDU-24)
6.7Kg (for DDU-26)
Optional NTP [LAN Interface] for Slave Clocks Optional PoE [Power Over Ethernet] for NTP Slave Clocks
Time Sync Protocol NTP V3, UDP, Telnet Standard IEEE 802.3af
Internet Protocol IP V4 Input Supply Voltage 48VDC[36VDCmin - 57VDCmax]
Mode Client Power Consumption < 6W
Protocol Time Format UTC Terminal 100BaseT, RJ45
Physical Interface RJ45, 10/ 100 Mbps Cable CAT 5