Title: Hardware Installation Guide.pdf
The value of R in the figure is chosen to correspond to a proper parallel termination, RT, and it is chosen to be slightly larger than the characteristic impedance of the cable, ZO. Over-termination tends to be more desirable than under-termination since over-termination has been observed to improve signal quality. RT is typically chosen to be equal to ZO. When over-termination is used RT is typically chosen to be up to 10% larger than ZO. The elimination of reflections permits higher data rates over longer cable lengths.114.3.4V-StationACommunication between the V-StationA reader and the LNL-500B/1300/1320/2220/2210 is done via RS- 485 connection. Wire power separately.590 — revision 6Hardware Installation GuideV-StationA unit with Wiegand connections to reader interface (LNL-1300, 1320, 2220, or 2210)0 D A T A D/1 D K L C/D N GOn the back of the unit, jumper TX(+) and RX(+) together, and jumper TX(-) and RX(-) together. Then wire these to TR+ and TR- respectively on the BRI.