12.4 System Interface
111
Relay Specification
Type or Rating
Arrangement
1 set of Form C (SPDT) contacts
Contact resistance
100 mΩ
Operate, release time
Approx. 6 ms, 3 ms
Rated switching current
(resistive)
8 A at 250 Vac, 5 A at 30 Vdc
Max. switching capacity
2,000 VA, 150 W
Expected life
50,000 electrical cycles (100,000 typical)
Min. permissible load
10 mA, 5 Vdc
Table 12.1: Relay Specifications
12.4
System Interface
For a list of COM1 serial port pins and assigned functions, see Table 12.2. For a list of COM2 serial port
pins and assigned functions, see Table 12.3.
Pin Number
Function
Pin Number
Function
1
Not Connected
6
RS-232 Input
2
RS-232, Rx Data
7
Not Connected
3
RS-232, Tx Data
8
RS-422/485, Tx-A
4
RS-232 Output/Prog. Pulse
9
RS-422/485, Tx-B
5
Ground
–
–
Table 12.2: COM1, RS-232 Port Pin Definitions
Pin Number
Function
Pin Number
Function
1
Not Connected
6
Not Connected
2
RS-232, Rx Data
7
Not Connected
3
RS-232, Tx Data
8
Not Connected
4
Programmable Pulse
9
Not Connected
5
Ground
–
–
Table 12.3: COM2, RS-232 Port Pin Definitions
Connector: 9-pin D-type subminiature:
RS-422/485: Transmit only on COM1, the main RS-232 port.
Communication Parameters: Selectable 1,200 baud to 115,200 baud; 7 or 8 data bits; 1 or 2 stop bits;
odd/even/no parity.
Supports all keyboard functions.
12.4.1
Broadcast Data Formats
For detailed information on all broadcast formats, please see Section 11.2.2.
12.4.2
Synchronization
For a received data message, the leading edge of the start bit may be selected to trigger the Event input,
providing synchronization with 100 ns resolution.
Содержание 1200B
Страница 4: ...iv ...
Страница 135: ...A 3 Physical Dimensions 117 Figure A 2 Suggested Mounting of the GNSS Surge Arrester ...
Страница 143: ...B 7 Four Fiber Optic Outputs 125 Figure B 4 Jumper Locations ...
Страница 145: ...B 8 8 Channel High Drive IRIG B Amplifier 127 Figure B 5 8 High Drive Outputs Jumper Locations ...
Страница 161: ...B 10 Four Additional Outputs and Dry Contacts 25 50 Vdc 143 Figure B 7 Option Connector Signal Locations ...
Страница 212: ...Appendix E Statement of Compliance The following page is a statement of compliance that includes Model 1201B and 1201C ...