HP 740B Operating And Service Manual page 15

section ill
INDEX
NO.
21
22
23
24
NAME
+ and - OUTPUT Terminals
Ground (
-:!:- )
Terminal
+ and - SENSE Terminals
HIGH VOLTAGE Indicator
Model 740B
FUNCTION
Accept leads for application of outpUt voltage to
remote location.
Accepts lead for connecting to power line gro)ll1d.
This terminal and the instrument case are con-
nected to power line ground through the center
conductor of the power cord.
Accept leads for remote sensing of output voltage.
When not using remote sensing, the + SENSE ter-
minal is shorted to the + OUTPUT terminal and
the - SENSE terminal is shorted to the - OUTPUT
terminal.
Lights to indicate presence of high voltage (>
120
Vdc) at the OUTPUT terminals.
0 0
740B -C-0681
AC
DC
"
RECORDER OUTPUT
+ -
*
OUTPUT INPUT
INDEX NO.
25
26
27
28
29
30
NAME
AC Fuses
AC Power Connector
Line Voltage Two-Position
Slide Switch
DC Fuse
RECORDER AMPLITUDE
Adjustment
RECORDER OUTPUT
+,
- and
-:!:-
Terminals
FUNCTION
Protect Primary Power Circuitry.
Accepts power cable supplied with the instrument.
Sets the instrument for either 115 Vac or 230 Vac
operation.
Protects internal - 42 V supply.
Variable attenuator which enables adjustment of
RECORDER OUTPUT voltage.
Provide output voltage proportional to meter de-
flection for recorder applications.
3-4
Figure 3-3. Front and Rear Panel Controls, Indicators and Connectors (Cont'd)
01794-1