VCom Inc.
BST1918 Manual; ml_bst1918_02 (Sept 2005)
Approved: C.H.
8
2.0 INSTALLATION
2.1 Unpacking the Unit
Carefully remove the equipment from its packing material and set it on a solid surface, such as a table or
desk. If it appears damaged in any way, notify the carrier, and keep all packing materials for inspection by the
carrier’s agent.
2.2 Operating Environment
-
Front to back cooling; no clearance required above or below, but ample clearance at front and back.
-
D to operate at temperatures ranging from 0 to 40
o
C (50 to 104
o
F). As with all electrical equipment,
operation at excessive temperature accelerates the deterioration of components. For this reason,
measures should be taken to prevent the build up of excessive heat in the rack.
2.3 Power Requirements
All power on the unit is supplied by the WM4040 via a –48VDC connection multiplexed over the IF cable.
Only one BST1918 can be connected to a WM4040.
2.4 Rack Mounting
The chassis is designed for standard rack mounting in a 19” equipment rack. It requires 2U (3.50”) of vertical
rack space. It should be installed in a rack allowing access to the back of the unit. The transceiver should be
isolated from strong RF radiation emanating from local equipment in the rack.
2.5 Module Installation/Replacement
1. Power off the desired BST1918 module by disabling the IDU in the corresponding WM4040 module.
Ensure that the “DC Power” LED is off.
2. Wait 15 seconds to allow voltage to dissipate on the WM4040 connector, then disconnect the WM4040 and
antenna cables from the rear of the corresponding module
3. Using a screwdriver, loosen the corresponding rear panel captive screws
4. Using a screwdriver, loosen the corresponding front panel captive screws until the module is free to pull
forward.
5. Remove the module and set off to the side being sure to keep the unit sitting on the bottom guide rails
6. Insert the replacement module and retighten the front panel captive screws
5. Retighten the rear panel captive screws
6. Reconnect to the WM4040 using the included RG-58 cable. If this cable is not long enough to bridge the
gap between units, ensure that 50 ohm RG-58 cable is used and the length does not exceed 10ft
7. Turn on the IDU and configure the IF/RF levels using the WM4040
8. Reconnect the rear panel antenna cable
9. Enable the IDU output