
and RX LEDs glow red to show activity on the data wires. The TX
LED indicates the fiber modem is transmitting and the RX LED
indicates reception of data.
....................................................................................................................
lxiv
..........................................................................................................................7.10.2 Installation lxv
To install the MX-485-2, it is necessary to mount the unit to a rigid
service using #8 hardware in four places. Care should be taken
when selecting a mounting location to avoid sharp bends in the
connecting cables. Please note minimum bend radii of all fibers
being used, to avoid fracturing the fiber optic core.
....................................................................................................................
lxv
........................................................................................................7.10.3 Optical Transmission lxvii
The 485-2 series has been designed to be a reliable link for the
transmission of data over long distances. The loss budget of 15 dB
on 16.2u fiber should allow up to 5 kilometers of transmission
distance.
....................................................................................................................
lxvii
The power output specifications are measured with a logic low state
on the bus. When the bus is in the high impedance state, the
transmission LED is at a very low output level (<-36dBm). Logic
levels are encoded using pulse width modulation. If the optical
connection is lost, the output bus goes to the HiZ state.
....................................................................................................................
lxvii
..........8.0 Status Lights and Dealing with Communication Errors lxviii
..............................................................................................................8.1 Status Lights lxviii
.................................................................................................8.2 Communication Errors lxix
...........................................................................................8.2.1 LED Fatal Error Display Codes lxix
..........................................................................................................................8.2.2 Error Codes lxx
.........................8.3 Control Counters and Sense Input Numbers for Output Control PCB lxxi
..........................................................................8.4 Proper Setting of SAM 1 and SAM 2 lxxiii
..........................................................................8.5 IQ Systems Upgrades and Capacities 74
.......................................................................................8.6 RS-232/485 Terminal Servers 75
.8.6.1 IQ Server Controller to LANtronix UDS-1100 Terminal Server Wiring Diagram for RS-232 75
.8.6.2 IQ Server Controller to LANtronix UDS-1100 Terminal Server Wiring Diagram for RS-485 75
......................................................8.6.3 IQ Server Controller to the EasySync USB Converter lxxvi
......................................8.7 RS-232-485/422 Converters: Printed Circuit Board Layout lxxvii
..........................................................................................8.8 User Selectable Options lxxviii
..........................................................................................................8.9 Point Definitions lxxx
.......................................................................................................................8.9.1 Sense Inputs lxxx
Page xi of 110 IQ-400 Installation Manual 33-10057-001-C
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