Theory Of Operations; Models 707B And 708B Theory Of Operations Overview; Mainframe - Keithley 708B Reference Manual

In this section:

Models 707B and 708B theory of operations overview4-1

Mainframe .................................................................. 4-1

Front panel ................................................................. 4-6
Models 707B and 708B theory of operations overview
The Models 707B and 708B are composed of several components assembled into an aluminum
frame. The Model 707B supports the operation of up to six relay matrix cards; the Model 708B
supports the operation of a single relay matrix card. Each of the components is briefly described
below.
Mainframe
Figure 73: Model 707B mainframe block diagram
100 - 240 VAC
50/60 Hz
AC Power
Entry and Fuse
LAN
USB
IEEE-488
Communication
Interfaces
Digital I/O
TSP-Link
Relay
Power
Removable
Panel for
Card Access

Theory of operations

Instrument
Fan
Airflow
Universal
Power
Supply
Instrument
Power
Communication
and
Two-Line
Power
Microprocessor
VFD Display
Board
LAN Status LED
Communication
and
Power
Navigation
Wheel
Instrument
Backplane
Section 4
Front Panel
of Instrument
Communication
and
Power
Matrix
Display
and
Power
Switch