Operating Information
TLA 720 Benchtop Chassis and TLA 7XM Expansion Chassis Service Manual
2–3
When you install a module, shutters on the bottom of each slot automatically
open to provide cooling.
The On/Standby switch on the top-left corner of the front panel applies DC
voltages to the chassis. The switch is a momentary contact switch. The switch is
lighted when DC voltages are applied to the benchtop chassis. The benchtop
chassis can also be remotely controlled.
You can configure the benchtop chassis to bypass the On/Standby switch. (Refer
to Remote Power Switch Configuration on page 4–18 of the Maintenance
chapter for information on configuring the power switch.) In this configuration,
the On/Standby switch remains lighted while power is applied, but the switch
itself no longer controls the benchtop chassis.
The AC power connector is located on the rear bottom left side of the benchtop
chassis. The AC fuse holder is located just above the power connector.
The chassis ground screw can be used to connect more than one benchtop chassis
to a common ground point.
The fan speed switch controls the speed of the blower. When the switch is set to
the VAR (variable) position, the mainframe automatically controls the speed of
the blower depending on the air temperature and amount of cooling required by
the modules. When the switch is in the FULL position, the blower operates at
full speed.
The enhanced monitor, in addition to the DB25-pin connector and the fan switch,
includes an industry standard 9-pin RS-232 serial port, logical address switches, a
jumper for slot-1 or slot-12 MODID selection, an auxiliary power connection, a slot
for adding programming FLASH jumper, and status lights. Refer to Figure 2–4.
On/Standby Switch
AC Power Connector
Chassis Ground Screw
Fan Speed Switch
Enhanced Monitor
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...
Page 129: ......
Page 155: ...Jumper Settings 4 26 TLA 720 Benchtop Chassis and TLA 7XM Expansion Chassis Service Manual...
Page 178: ...Options...
Page 179: ......
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...
Page 205: ......
Page 211: ...Index Index 6 TLA 720 Benchtop Chassis and TLA 7XM Expansion Chassis Service Manual...
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