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Model 5065A
Circuit Diagrams, Theory, and Maintenance
Figure 3-9. Front Panel Controls
1
2
4
5
6
7
9
13
1.
OUTPUTS:
5 MHz, 1 MHz, 100 kHz:
BNC
jacks paralleled with rear-panel outputs.
Out
put level is 1 volt rms (minimum) into 50 ohm
load.
2.
INTEGRATOR LIMIT lamp:
Normally off in
dicating that quartz oscillator dc correction
voltage is less than the dynamic limit of ±5
Vdc.
When ON, indicates that quartz oscil
lator dc correction voltage is approaching the
dynamic limit of ±5 Vdc.
3.
CONTINUOUS OPERATION lamp:
Normally
on, indicates circuits are functioning properly.
4. START-AUTO/START divider mode switch: Al
lows regenerative dividers to be operated in one
of two modes:
to manually start dividers,
momentarily press to START, then release;
for automatic start, set to AUTO START.
5.
LOGIC RESET switch:
Push to reset logic
circuit and enable CONTINUOUS OPERATION
lamp when operation is resumed after power
interruption, repair, or adjustment.
6.
CIRCUIT CHECK meter and switch:
Provides
monitoring of various circuits for operation
checks and trouble indication, as specified in
Table 5-3.
MAGNETIC FIELD adjustment:
A high-resolu
tion, 10-turn potentiometer
with clock
dial;
controls the magnetic field within the RVFR
Assy. Used as a fine control to set the 5065A
to a specific frequency. A change of one minor
division will change the frequency by 4 parts in
10'*. Total adjustment is 2 parts in 10
9
.
FUNCTION switch:
mode of operation.
Controls the instrument
OPERATE:
Instrument
operating with quartz oscillator locked to the
RVFR resonant frequency. LOOP OPEN: All cir
cuits operating with loop open.
9.
SYNTHESIZER
CHECK
jack:
Synthesizer
Assembly A1 output frequency is available at this
BNC jack to check Synthesizer operation as out
lined in TIME SCALE CHECK of Table 5-2.
10.
BATTERY switch (Option 002 and 003 only):
Controls BATTERY lamp and internal standby
battery charging rate. Three position switch has
three functions:
a.
FAST CHARGE: Charges battery at rapid
rate with 16 hours maximum charging time.
b.
FLOAT:
Standby battery receives trickle
charge (normal positioni.
c.
RESET: Resets BATTERY lamp circuits after
ac line power failure.
11.
BATTERY lamp (Option 002 and 003 only):
Operates with front panel BATTERY switch.
Flashes on and off when ac power fails. When
BATTERY switch is set to FAST CHARGE (16
HOURS MAX) lamp is on. Set BATTERY switch
to RESET to turn lamp off.
12.
OSC FREQ ADJ COARSE: Provides quartz oscil
lator frequency adjustment of 1 part in 106, Use
only COARSE control to correct oscillator fre
quency with frequency-locked operation.
13.
OSC FREQ ADJ FINE: Control used for testing
only. Normally set to 250.
14.
24-Hour Digital Clock (Option 001 and003only):
See Paragraph 3-29.
15.
1 PPS (Option 001 and 003 only): +10V peak,
20 ^sec pulse at 1 pulse-per-second rate.
3-13
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