Agilent Technologies HP 3325B Instrukcja Obsługi Pobierz pdf (Strona 146)

Chapter 2 Service

Troubleshooting the Counter

2-48 Assembly-Level Service Guide

You can also specify that failure messages be sent to a printer, the RS-232, and the

GPIB—if in talk-only (TST PRINT: ON or OFF).

There are 13 choices for the TEST: menu item. They are listed and described in the

following text.

TEST: ALL? —run all tests, except display, keypad and printer tests.

DISP? —illuminate the indicators and vacuum-fluorescent display

(VFD) segments. Note, this test is not available if TEST

LOOP: is ON. TEST LOOP: must be OFF.

CPU? —test processor(s).

ROM? —checksum the ROM.

RAM? —test RAM.

EEPROM? —checksum the EEPROM, which is used for non-volatile

memory.

HP-IB? —test GPIB chip.

QSPI? —test serial hardware control loops.

FPGA? —internally measure the timebase to test count circuitry.

FR END? —check front end circuits, either by swinging trigger levels

(during power on test and ALL test) or asking you to

connect the timebase output to channels 1 and 2 using a

BNC-T connector to split the signal.

MEAS? —make a measurement, either by swinging trigger levels

(during power on test and ALL test) or asking you to

connect the timebase output to channel 1.

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Agilent Technologies HP 3325B Instrukcja Obsługi Strona 146