输出为短路保护，接地，但获得最大的可靠性，如果输出电流不超过160毫安。
Output is short circuit protected to ground, however maximum reliability is obtained if output current does not exceed 160mA.
为防止损坏开关卡，需验证最大电流和最大电压的乘积没有超过开关卡的功率额定值。
To prevent damage to the switch card, verify that the product of the maximum current and maximum voltage does not exceed the power rating of the switch card.
该电阻器的阻值要保证被测装置发生故障时的短路电流不会超过开关卡上任一组继电器的最大电流指标。
The value of this resistor is chosen such that, in the event of device failure, the short circuit current will not exceed the maximum current specification of the relays on either set of switch cards.
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