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我注意到34461A前面板电源灯是双色的。
插入或拔出时，它显示为琥珀色，当DMM通电时，它变为绿色。 如果电压参考在插入时保持加热24/7将是非常好的，就像hp与柜台和其他仪器中的烤箱振荡器一样。 LM399加热器电源是否始终保持开启状态？ 如果没有，双色灯指示什么？ 如果答案在那里，我无法在手册中找到指示，提前道歉。 以上来自于谷歌翻译 以下为原文 I notice that the 34461A front panel power lamp is bi color. When plugged in and off, it shows amber, and when the DMM is powered up, it turns green. It would be fantastic if the voltage reference remained heated 24/7 when plugged in like hp did with the oven oscillators in counters and other instruments. Does the LM399 heater power remain on at all times? If not, what does the bi color lamp indicate? I could not find an indication in the manual, apology in advance if the answer is there. 
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3个回答
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电源按钮下方的琥珀色LED指示DMM已关闭，但已连接到线路电源。
在此状态下，内部电路（包括LM399电压参考）没有电流/电压。 功耗为10W，屏幕保护程序（Shift - Utility - 系统设置 - 用户设置 - 显示选项 - Scrn Svr）在长时间不活动后使显示屏变暗，建议34460A / 34461A数字万用表持续保持通电状态。 以上来自于谷歌翻译 以下为原文 The amber LED beneath the power button indicates the DMM is off, but is connected to line power. No currents/voltages are supplied to the internal circuitry (including the LM399 voltage reference) in this state. With a power consumption of 10W and a screen saver (Shift - Utility - System Setup - User Settings - Display Options - Scrn Svr) that dims the display following long periods of inactivity, it is recommended the 34460A/34461A DMM continually remain powered on. |
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子虚道人 发表于 2018-12-18 11:09 同意34461A最好保持通电，只是因为启动时间比大多数其他数字万用表更长。 虽然LCD背光是LED吗？ 我目前不打扰屏幕保护/自动调光功能，假设它与LED背光无关。 如果它是基于CCFL的，我可以看到当它被允许调暗时它将如何持续更长时间。 以上来自于谷歌翻译 以下为原文 Agreed that the 34461A is best left powered on, if only because the bootup time is longer than most other DMMs. Is the LCD backlight an LED, though? I currently don't bother with the screensaver/auto-dimming functionality, under the assumption that it doesn't matter with an LED backlight. If it's CCFL-based, I can see how it would last longer when allowed to dim itself. |
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网络上提供的34460A / 34461A数字万用表的最新固件更新（1.09）可将启动时间从50秒减少到
以上来自于谷歌翻译 以下为原文 The latest firmware update (1.09) for the 34460A/34461A DMMs which is available on the web reduces the boot time from 50s to < 30s (a modest improvement). The display backlight is provided through a +series+ of LEDs. Enabling the screen saver (Shift - Utility - System Set Up - User Settings - Display Options - Scrn Svr (On)) will significantly extend the life of the display. |
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