In-Cabinet Performance Check - HP 5340A Operating And Service Manual

On rear panel of 5340A, set SELECTOR switch to correspond with the line voltage to be used (115V or
1.
2. Set 5340A controls as follows:
LINE switch to ON
RESOLUTION switch to 1 Hz
SAMPLE RATE control fully counterclockwise
RANGE switch to CHK
INT-EXT switch (rear panel) to INT.
3. Check that counter displays the following:
10.000 000 MHz *l count
DIR (direct) annunciator lighted
GATE light flashing
Push RESET switch, display should initially be all zeros, then display 10 MHz.
5. Slide RESOLUTION switch through all positions to 1 MHz, noting that one fewer digit is displayed
for each of the switch.
step
6. With RESOLUTION switch
lamp flashing.
Set RESOLUTION switch to 10 Hz. Rotate SAMPLE RATE control clockwise, check that gate lamp
7.
off time increases. The gate lamp off time should be at least 5 seconds with the SAMPLE RATE
control fully clockwise.
Rotate SAMPLE RATE control to HOLD. Check that gate lamp stops flashing and display is held
8.
indefinitely. Rotate SAMPLE RATE control to mid-position.
Set RANGE switch to 10 Hz to 250 MHz position. Connect appropriate signal generators
9.
BNC connector and vary frequency input from 10 Hz to 250 MHz. Maintain the input level at 50 mV
rms (142 mV p-p). Check that counter displays the correct frequency for the entire range.
When making high frequency sensitivity checks, it is important to recognize that
cable losses can be appreciable. Amplitude differences as high
between the generator output jack and the cable end connected to the 5340A. When
determining sensitivity using generators with a calibrated output meter, include
cable loss. A preferred method is to measure actual signal strength at the cable end
(properly terminated) using a power meter capable of measuring the signal of interest.
Do not exceed 1 watt of input power
internal damage may occur. See Paragraph 3-22 for a complete explanation of input
levels.
Set RANGE switch to 10 Hz to 18 GHz position. Connect appropriate signal generator to 50R Type
10.
INPUT and vary frequency input from
that counter displays correct frequency for the entire range.
11. Select signal generators to cover the 500 MHz to 10 GHz range. Connect generators to 50R N connector.
Maintain the input level at -35 dBm (3.98 mV rms) and vary the input frequency from 500 MHz to
10 GHz. Check that counter displays correct frequency for the entire range.
12. Repeat step 11 for the 10.0 GHz
13. Set RANGE switch
to
14. On 5340A rear panel, set INY-EXT switch to EXT. Connect a 10 MHz signal a t 1.5V p-p to 10 MHz
INPUT BNC connector. Check that 5340A operates properly. Disconnect the 10 MHz signal, and set
INT-EXT switch to INT.
15.
On 5340A rear panel, measure signal at 10 MHz OUTPUT connector using 1O:l divider probe on an
oscilloscope. Check that oscilloscope displays a 10 MHz signal with at least a 2.4V p-p amplitude.
Table 5-3. In-Cabinet Performance Check
to
set 1
NOTE
CAUTION
10
to 18
,
250 MHz to 18 GHz and repeat steps 11 and 12.
Model 5340A
Maintenance and Service
INPUT
to
as 20
5-13