Performance Tests
1
Keysight 53210A/53220A/53230A Assembly Level Service Guide
29
Power-On Test
1
Inspect the counter for any damage. Make sure no cables are connected to the
input channels (rear and front panels) of the counter.
2
Connect the power cord to the counter, and connect the other end of the
power cord to the primary power source.
3
Verify the following condition for the Power LED with power off (lower L/H
corner of the front panel).
– No OCXO or OCXO in Off mode - LED is off when power is off.
– OCXO present, heated by AC power - LED is on solid when power
is off.
– OCXO present, heated by battery power - LED blinks when power
is off.
4
Press the
POWER
key (lower left-hand corner of the front panel) to turn on the
counter. Verify the following results:
– The front panel display turns white as all pixels are illuminated.
– The LED under the power switch is on solid.
– After several seconds, a screen is briefly displayed that shows the status
and ID of the IP Address and the GPIB address. The factory default GPIB
address is 3. (“Disabled” means the GPIB is turned
Off
under
[Utility] / (I/O
Config).
– The counter is now ready to measure frequency of a signal applied to
CHANNEL 1 input as indicated by illumination of the
Freq
softkey and
Channel
1
annunciator.
NOTE
It is normal for the fan in the counter to run at different speeds as necessary
(depending upon internal temperature) when the counter is in standby mode.
Power to the timebase is continuous to maintain long term measurement
reliability, and the fan helps maintain timebase temperature stability.
NOTE
An auto-cal is performed at power-on. (See
page 148 for more information.)
Содержание 53210A
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