HP 5065A Operating And Service Manual page 13

Rubidium vapor frequency standard
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Model 5065A
Circuit Diagrams, Theory, and Maintenance
Table 1-3. Specifications (Continued)
OPTION 001 TIME STANDARD
CLOCK PULSE:
Rate: 1 pulse per second.
Rise Tlme:<50 ns.
Fall Time: <1 MS.
Amplitude: +10Vpeak±10%
Jitter: 5 ns rms are
Width: 20 /is min. All specs
with 50n load.
Output: Front-panel BNC.
SYNCHRONIZATION: Automatic to 10±1MS, delayed
from reference input pulse (rear BNC). Manual
adj. to+50 ns. Reference pulse must be>+5 v with
a rise time<50 ns and width>0.5^is.
CLOCK MOVEMENT: 24-hour LED Digital Clock.
OPTION 002 STANDBY POWER SUPPLY
CAPACITY: 10-minute minimum at 25°C after full
charge (incl. Option 001).
CHARGE CONTROL: Front panel, Fast Charge-
Float-Reset switch.
INDICATOR: A front-panel light flashes when ac
power is interrupted and battery is being used.
A continuous light indicates a fast charge condition.
OPTION 003
Combines Options 001 and 002
PERFORMANCE OF QUARTZ OSCILLATOR ONLY
(Rubidium Control Loop Open)
A G I N G RATE: <±5 x 10-10 per 24 hours.
FREQUENCY ADJUSTMENTS:
Fine Adjustment: 5 x 1 0
s
range, with dial readings
of parts in 10
10
.
Coarse Adjustment: 1 part in 10
6
, screwdriver
adjustment at front panel.
STABILITY:
As a Function of Ambient Temperature: Fre­
quency change is less thatn 2.5 x 10"
9
total from
0°to+50°C.
As a Function of Load: ±2 x 10~
11
from open
circuit to short, 50f2R, L, or C load change.
As a Function of Supply Voltage: ±5 x 10'
11
for
23 to 30 Vdc from 26 Vdc reference, or for
115/230 Vac ±10%.
DIMENSIONS:
DIMENSIONS IN INCHES AND
( M I L L I M E T E R S ]
) E I A RACK HEIGHT (INCLUDING FILLER
STfllPl
FOR CABINET HEIGHT!INCLUDING FEET) ADO j | ( 8 )
TO
EIA RACK HEIGHT
R APTON RECESS
1-4

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