Line Voltage Selection Wiring; Ext Dc Wiring - Tektronix 1105 Instruction Manual

which they normally can withstand. If a cell becomes
defective, or a circuit failure causes the recommended
charge rate to be exceeded, excessive pressure builds up.
The pressure may rupture a relief vent, exhausting the gas.
This action may shorten the life of the cell, and will coat
the surrounding areas with a corrosive substance.
The battery pack should be inspected every six months
or every 500 operating hours, whichever occurs first.
Individual cells or the entire battery pack should be
replaced if venting or excessive corrosion has occurred. The
cover plate must be removed to expose the individual cells.
Sight between the cells to check for obvious corrosion or
venting.
Battery Pack Removal. Unplug the battery connector.
Remove the two screws from the battery holding bracket.
For ease in handling, the thermal cut-out leads may be
unplugged from the circuit board and the block ground lead
unsoldered.
Individual Cell Replacement. When necessary, individual
cells can be removed and replaced by cutting the straps
which connect the two ends of the cell to the pack, and
soldering in a new cell. The cell type specified must be
used. Other types may not function properly. They may
4-2 Maintenance—1105
prove to be a hazard to the instrument and to personnel.
Operating time or temperature performance may be
degraded. The battery pack should be charged for 24 hours
after individual cells are replaced.
All cells in the battery pack should be made by the same
manufacturer. Include this information, with the other
information required, when ordering a replacement cell.
Line Voltage Selection Wiring
Charging Voltage Connect as Shown
115 VAC (100 to 132 VAC) Fig. 4-1a
230 VAC (200 to 264 VAC) Fig. 4-1b
105 VAC (90 to 120 VAC) Fig. 4-1c
210 VAC (180 to 240 VAC) Fig. 4-1d
Ext DC Wiring
A DC power cord is provided to permit proper connec-
tion of the 1105 Power Supply to a suitable DC source. See
Fig. 4-2a. Additional isolation may be needed between the
1105 Power Supply and the apparatus being used. The user
may need to break the safety earth circuit. To offer
REV. B, NOV. 1974