HP 5385A User Manual

HP 5384A and HP 5385A
Performance Tests
4-6
Table 4-1. Performance Test (Continued)
Specifications:
low Pass Filter, 100 kHz, nominal at 3 dB point.
X1 or X20, nominal, selectable.
Perform the following steps to use the Channel A Filter and Attenuator tests.
a. Set the counter POWER switch from STBY to ON; set the gate time to 1.0 seconds.
b. Connect the HP 3325A Synthesizer/Function Generator to the HP 5384A/HP 5385A Channel A
input as shown in Figure 4-6.
BNC
"T" CONNECTOR
I EXT REF IN
OVEN
OUTPUT
EXT 10 MHz HP 5384A/HP 5385A
REF FREQUENCY COUNTER
nn l1
c.
d.
HP 10100C
500 FEEDTHROUGH
HP 3325A
SYNTHESIZER/FUNCTION
GENERATOR (OPTION 001)
BNC CABLE
Figure 4-6. Channel A Filter and Attenuator Test Setup
Press the 1 second gate time Key.
1. Set the HP 3325A to output a 50 kHz sinewave at 15 mV rms.
RF
OUTPUT
2. Verify that the counter displays SO.OOOOOOOK ±3 millihertz, with a continuous indication
above "A" and a flashing indicator above "GATE" on the front panel.
3. Enable the channel A Fll TER function; observe that the HP 5384A/HP 5385A display has not
changed and an indicator arrow appears in the display above the "Fil T" label on the front
panel.
4. Disable the Fll TER function.
e. 1. Set the HP 3325A to output a 1 MHz sinewave at 55 mV rms.
2. Verify counter displays "1.00000000M" ±10 millihertz
3. Enable the channel A Fll TER function; observe that the counter displays all zeros.
4. Disable the Fll TER function and observe that the counter displays 1.00000000 MHz ±10
millihertz.
5. Record the results on the test card (Pass/Fail).
f. 1. Enable the channel A X20 A ITENUATOR; observe the HP 5384A/HP 5385A display showing
eight zeros with indicators above" AITN" and "A" only. Disable the X20 ATIN function, and
observe the counter displaying the same value as in step e. Record the results on the test card
(pass/fail).
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HP 5385A Specifications

General

Brand	HP
Model	5385A
Category	Cash Counter
Language	English