Brand： Honeywell
Model number：05701-A-0330
Colour：new
Warranty: 12 months
Lead Time：3-day working day
Country of origin: USA Price: Please contact us
Product weight：0.4kg
Shipping Port: Xiamen, China
Payment: Bank of Chicago, Bank of Singapore
Express cooperation: fedex, DHL, UPS and your express account
Service: Professional Sales provides 24 hours /7 days online service
Description:
To achieve fast reliable data connections good quality screened twisted pair cable should be used. The maximum achievable data rate is limited by the cable capacitance and therefore the cable length should be kept as short as possible. In dual highway configurations a separate twisted pair should be used for each highway, however if required, these may be contained within a single cable. In order to ensure the correct operation and to meet European Standards for RFI and EMC, it is recommended that all field cables should be of the screened type with the cable screen connected at one end only. If the screen is to be connected at the System 57 end, use either the ground terminal of the DC Input Card, the cabinet using a suitable metal cable gland or other suitable instrument earth point.
3.4.3 RS485/422 Transmission Line Termination
In RS485 or RS422 applications, the two wire transmission lines must be properly terminated. The simplest form of termination is typically with a 120 ohm resistor connected across the differential input as follows: a. In RS422 host systems, a terminator resistance is only required at the receiver device located in the host and at the receiver device located in the System 57 node at the far end of the cable. b. In RS485 host systems a terminator resistance is required at the transceiver device located in the host and at the transceiver device located in the System 57 node at the far end of the cable. For dual highway RS485 systems both highways should be terminated as described. Jumper links are provided on the System 57 RS485/422 Module to make above termination easy (see Figure 1). In general RS485 transmitter circuits are specified as being capable of driving a minimum load resistance of 60 ohms, therefore no more than two terminator resistors should be connected in parallel onto any one bus. RS422 transmitter circuits are specified as being capable of driving a minimum load resistance of 100 ohms, therefore no more than one terminator resistor should be connected onto any bus.
Shipping Port: Xiamen, China
Payment: Bank of Chicago, Bank of Singapore
Express cooperation: fedex, DHL, UPS and your express account
Service: Professional Sales provides 24 hours /7 days online service
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