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| 选件 | 是否计量 | 发货周期 | 保修时间 | 成色 |
|---|---|---|---|---|
| 否 | 1-4周 | 12月 | 8成新 | |
| 所在地 | 机身号 | 状态 | 资料下载 | |
| 深圳市 | 完好 |
PPH-1503可编程高精度直流电源在前后面板的输入端口处各有一个附加DVM（数字电压表）。它测量范围有限，仅限于低直流电压的测量。它可以用来监视测试点上的电压，以及测试夹具上的电压。DVM既可通过仪器前面板编程，也可远程使用SCPI编程命令。双量程功能允许在额定功率范围内灵活有效的设定电压和电流。PPH-1503提供了一个内置先进的测量系统，能准确地测量设备在不同状态下的电池电流消耗，如通话模式，活动模式，待机模式和关机 / 睡眠模式。为确保设备的正常运行，在这些模式中进行的测量是至关重要的。在生产过程中的功能测试，PPH-1503提供的电源可替代设备上的主要电池。
当输出超过额定电压和电流时，PPH-150可编程高精度直流电源可执行在CV或CC模式。虽然DC电源可以工作在这两个模式，但它被设计成恒压源。当仪器打开恒压模式时，电压只能上升到设定值。标准直流电源的远端感测带宽和转换速率足够补偿负载导线的压降，且缓慢到负载变化的适度水平。针对目前数字窝蜂电话的高脉冲电流而言，对操作在远端感测模式的标准直流电源提出了挑战。它们的带宽和转换率不足以应对0.05到2A/us转换率的这些设备。如果一个大电压瞬变出现在负载端，传统的直流电源无法跟上负载的变化率。当测试电路是有源电路时，PPH-1503具有电流吸收功能。体现在测试电路中的电压大于电源输出电压，并会自动消耗外部的电流。当这个功能在正常工作状态时，相当于一个恒压负载而不是恒流负载。电源输出端的电流损耗从正端流向负端。电源不能控制吸收电流的大小。
PPH-1503具有Relay（继电器）控制功能，当打开时，它和电源的电流限值同步。外部relay控制分为Lim Relay（时限继电器）和Trip Relay（切断继电器）两个不同的类型。Lim Relay用于恒流模式组合（CC模式），当电流达到其设定值时，Relay控制信号将变为高电平，当电流低于设定值时，Relay控制信号将回到低电平。Trip Relay用于恒流模式组合（CC模式），当电流达到其设定值时，Relay控制信号变为高电平且电源关闭输出, 当输出打开且电流仍小于设定值时，Relay控制信号回到低电平。
特点：
PPH-1503 is designed to provide prompt response to the current change for recovering the output voltage at a minimum variation. The high sampling rate allows fast readback in voltage and current measurement to expedite products’ testing speed, which is able to increase the test throughput of production. Sink function can be used to test the battery charger of portable devices. The high precision performance of PPH-1503 provides the measurement capability in low power consumption level. One built-in DVM (Digital Volt-Meter) with input ports is designed to measure any point on DUT while PPH-1503 is outputting voltage and current. Besides, two ports are located on the front and rear panel which users can only select one to perform tests based upon their connection convenience. PPH-1503 is an ideal power source for production lines, R&D laboratories, device inspection, maintenance centers or facilities with the requirements of a swift and precise power supply with DVM.
In the testing of assembling LED backlight module into products such as TV, Monitor, Tablet and NB, the minimum requirement of current resolution should be at least four digits. Different sized LED backlights require different current consumption. Most LED backlights are 150mA, in which, ordinary power supplies could not provide the above-mentioned high current resolution of four digits. However, PPH-1503 provides 0.1mA (equivalent to 4 4/5 digits) current resolution under 5A setting as well as rapid transmission time of both measurement and commands to fully satisfy the testing requirement of current resolution so as to raise the production capacity. To achieve high working voltage requirements, PPH-1503 can be in series with GW Instek GPR-H series power supplies to conduct the testing of high voltage products.
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