34401A 自检出现故障码623
查手册有以下的解释
Cannot calibrate precharge This test configures to the 100 V DC
range with no input. The ADC is configured for 200 ms measurements.
The A1U205 pulse width modulated (PWM) DAC output (C224) is set to
about 4 volts. A reading is taken in with A4U101 in the MC state. A
second reading is taken in the PRE state. The precharge amplifier
voltage offset is calculated. The A1U205 DAC output is set to about 1.5
volts and the precharge offset is measured again. The gain of the offset
adjustment is calculated. This test assures a precharge amplifier offset is
achievable.
请问各位大大 这个问题如何解决?? |