EIP 545A - Rear Panel Controls and Connectors

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Figure 3-3. Rear Panel

REAR PANEL CONTROLS AND CONNECTORS

AC POWER connector accepts the power cord supplied with the counter.

FUSE provides overload protection. Use a 1 amp slow-blow MDL type fuse for 100/120 V operation.

Use a .50 amp slow-blow FST type fuse for 2201240 V operation.

VAC SWITCH sets the operating voltage of the counter to match power line. There are 4 settings:

100, 120, 220, and 240 VAC. Counter will operate at voltages within

210% of selected line voltage,

at frequencies of 50 to 60 Hz.

CAUTION

Switch setting and fuse rating must match

power line voltage.

GPIB connector is used with the IEEE 488

1978 General Purpose Interface Bus option (08).

BCD OUTPUT and REMOTE PROGRAMMING connectors (not shown) replace the GPIB connec-

tor when the counter is equipped with the BCD

OUTPUTIREMOTE PROGRAMMING option (07).

TlME BASE ADJUST control is used with options 03, 04, or 05 only. Screwdriver adjustment allows

precise setting of the internal ovenized crystal oscillator.

TlME

BASE

INTIEXT switch selects either the internal time base or an external 10 MHz reference.

TlME BASE connector (BNC female) allows monitoring of internal 10 MHz time base, or input of

an external 10 MHz reference.