HP 5300A - Page 18

Model 5300A
Operation
Figure 3-2. Rear Panel Connectors
Ac Power Module. Input Power module con-
tains the I.E.C. approved connector, the fuse,
(.3 Amp 115 Vac, .15 Amp 230 Vac), the
115/230 line voltage switchand filter capaci-
tors. Design of module prevents fuse or
switch change when ac power line is connec-
ted. The switch cannot be changed unless
the fuse is pulled out.
OSC Jack. When INT-EXT switch located
near the 5300A power transformer is inINT,
the instrument uses its internal 10 MHz
DIGITAL
RECORDER
Oscillator, and a 10 MHz signal (1 Vrms into
100-ohms) is available at the BNC jack. When
the switch is in EXT, the internal oscillator
is disabled andan external 100 kHz to 10 MHz,
1 Vrms into 500-ohms frequency source can
be used.
DIGITAL RECORDER Connector. BCD
serial output with a floating decimal point is
available.
OSC ADJ. Internal 10 MHz oscillator fre-
quency can be adjusted to 1 part in 108,