HP 5340A Operating And Service Manual page 44

Figure 3-4. Rear Panel Controls a n d Connectors
8 2 3
7
1
1. OUTPUT. Supplies a 10
peak or greater. Output is TTL compatible.
2. INT-EXT OSC switch. Selects time base source. When set to INT, the counter
operates from its internal 10
sine wave or square wave a t the 10
external 10
the counter. External oscillator requirements are 10
volts peak-to-peak into 1 kR.
INPUT jack. Accepts external time base signal. Requirements are a 10
10
sine wave or square wave
impedance). The INT-EXT switch must be set to EXT to accept the external
OSC input.
AC Input Connector. Ac
4.
to the chassis. Accepts 115 volts or 230 votls
draw is 100 volt amperes.
5 . SELECTOR switch. Allows the 5340A to operate off of 115 volts or 230 volts ac.
Use a narrow bladed screwdriver and slide the switch to show the desired oper-
ating voltage.
6. FUSE. Requires a 2.0 amp normal blow fuse for 115-volt operation or a 1.0 amp
normal blow fuse for 230-volt operation.
Input Option 002 N
7.
8. BNC input connector Option 002. Similar to front panel BNC input except that
this optiod ihdhdes a 50-ohm termination on the front panel BNC connector.
9. Digital InpdtfOutput Option 011.
9
square wave output
oscillator.
at approximately 1.5 volts peak-to-peak (1 kR
receptacle. IEC
power
as front panel N connector, see Figure 3-3.
connector. Same
Connector and address switches for remote
Model 5340A
5
4 6
at 2.4
volts peak-to-
When set to EXT, it allows a n
INPUT jack to operate
approximately 1.5
with offset pin connected
type
48 to 68 Hz. Maximum power
Operation
3-7