Removal and Installation Procedures
4–18
TLA 720 Benchtop Chassis and TLA 7XM Expansion Chassis Service Manual
Special Configuration Options
This section contains information for configuring your benchtop chassis for
specific situations not documented earlier in this manual. These special
configuration options require you to disassemble parts of the chassis to access
jumpers or circuit boards.
CAUTION.
To avoid damage from high currents on the backplane, always power
off the chassis and disconnect the power cord before performing any of the
configuration procedures described in this section.
You can control the power-on function of the benchtop chassis using the front
panel On/Standby switch and from a remote momentary switch through the
connections of the 25-pin rear panel connector. If you connect a remote switch to
pins 5 and 18 (return side) of the 25-pin connector, the remote switch and the
front-panel On/Standby switch control the power-on functions of the chassis.
You can also disable the front-panel switch and control the power-on functions
from the remote switch only. The backplane has two connectors that control the
power-on functions.
If the front panel switch is connected to the backplane at J22, the switch controls
the power-on functions. If the switch is connected to J23, the front panel switch
is disabled; however, the light still illuminates when the chassis is powered on.
To configure the chassis to disable the front panel On/Standby switch, disconnect
the power cord from the chassis.
Refer to Figure 4–13 and remove the cover from the chassis.
Locate the two connectors at the top of the backplane and disconnect the
On/Standby switch cable at J22 and connect it to J23. Replace the chassis cover.
Connect the momentary switch to pins 5 and 18 (return side) of the 25-pin rear
panel connector.
Remote Power Switch
Configuration
Summary of Contents for TLA 720
Page 13: ...Table of Contents viii TLA 720 Benchtop Chassis and TLA 7XM Expansion Chassis Service Manual...
Page 22: ...Specifications...
Page 23: ......
Page 38: ...Operating Information...
Page 39: ......
Page 105: ...Command Groups 2 66 TLA 720 Benchtop Chassis and TLA 7XM Expansion Chassis Service Manual...
Page 111: ...TEST Subsystem 2 72 TLA 720 Benchtop Chassis and TLA 7XM Expansion Chassis Service Manual...
Page 124: ...Theory of Operation...
Page 125: ......
Page 128: ...Maintenance...
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Page 155: ...Jumper Settings 4 26 TLA 720 Benchtop Chassis and TLA 7XM Expansion Chassis Service Manual...
Page 178: ...Options...
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Page 182: ...Diagrams...
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Page 186: ...Replaceable Mechanical Parts...
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Page 198: ...Replaceable Parts TLA 720 Benchtop Chassis and TLA 7XM Expansion Chassis Service Manual 7 11...
Page 203: ...Replaceable Parts 7 16 TLA 720 Benchtop Chassis and TLA 7XM Expansion Chassis Service Manual...
Page 204: ...Index...
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Page 211: ...Index Index 6 TLA 720 Benchtop Chassis and TLA 7XM Expansion Chassis Service Manual...
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