Accurately measures single modules or PV arrays up to 90-100 kW.
能精確測量單個組件或PV陣列，可測功率范圍達90KW。
* Low maintenance requirements - many Daystar units still operating after 18+ years in the field.
性能穩定，故障率低---很多Daystar產品戶外正常工作時間超過18年。筆者注：美國Daystar公司專注戶外IV測試設備的研究開發超過23年，該公司20多年來只專注做戶外IV測試設備。
* Multi-range load capacitance for optimizing sweep speed to PV characteristics. Changing the voltage across a cell too quickly may give an inaccurate presentation of the IV curve.
由于有多個電容負載范圍可選，故能優化掃描速度，進而更好的表征PV的電性能特性。如果改變被測電池兩端的測試電壓太快，會造成IV曲線的表征結果不精確。
* Safe, the Computer connection, pyranometers, and temperature inputs are electrically isolated from PV input. Non-metallic case.
安全，計算機接口、日射強度計，以及溫度接入端口，與PV輸入端口實現電氣隔離，保證了設備使用的安全性。
* Can measure positive grounded, negative grounded, or floating PV sources.
能安全地對測試正極接地、負極接地或者漂浮PV系統進行測量。
* Two Current Ranges, 10 Amperes and 100 Amperes. Accuracy ~0.5%
兩個可選的電流測試量程，10A和100A，精度~0.5%
* Auto-scale voltage ranges from 6 V to 600 V. Accuracy ~0.5%.
自動切換到合適的電壓測試量程（6V到600V可選），測量精度~0.5%.
* Portable and rugged.
便攜、耐用
* Large capacity battery for more than 10 hours of continuous operation.
大容量電池可供設備持續工作10小時以上。
* 4-Wire Kelvin load PV connection to measure voltage.
四線制開爾文方式測試電壓。
* True short-circuit current measurement.
真實的短路電流測試方法,保證短路電流測試結果的真實性。
* Universal AC power 85/264 Vac, 50/60Hz for re-charging battery and/ or running continuously from AC power. Secondary DC or PV module power/battery-charge input.
DS-100C設備的蓄電池可通過我們日常使用的交流電源進行充電，也可以直接通過交流電源給DS-100C設備供電。備有直流（DC）和光伏組件電源，以及蓄電池給充電輸入端口，即可通過直流電源、光伏組件（陣列）電源或蓄電池電源進行充電。
* USB and RS-232 interfaces.
USB和RS-232接口
* 2 voltage inputs for pyranometers; auto-scaling 4 decades to ±5 Volts.* 2 Thermocouple temperature inputs. Type T is standard.
日射強度計配有兩個電壓輸入端口，兩個熱電偶輸入端口（標準配置）。
* The Normalization Constants window allows you to choose one method of normalization, Approximation, ASTM-E1036-93, or ASTM-E1036-96.
歸一化窗口提供了三種歸一化方法。即將非標準狀態下的IV曲線（數據）轉換為標準條件（STC）下的IV曲線（數據），轉換參照的方法有三種標準供選擇，如Approximation, ASTM-E1036-93, or ASTM-E1036-96.保證了轉換結果的正確性。
* Supplied with transport case.
配有設備手提箱，方便攜帶。

軟件主要功能介紹
Daystar DS-100C IVPC Software Capabilities
* IVPC 3 Software (Windows) is supplied with all Daystar IV curve tracers to operate the Tracer, process and store the data, display the IV curve(s) on the computer and provide extensive analysis and presentation capabilities
所有Daystar IV測試儀都配有IVPC3軟件，并可通過軟件實現IV測試的運行，數據采集、IV曲線在電腦上顯示，并提供強大的數據分析能力和解釋功能。
* Extensive Help Menu
大量的幫助菜單，可幫助技術人員迅速掌握設備的操作。
* Auto-Curves to automatically take IV curves at defined intervals or ranges of irradiance and temperature.
可根據客戶對測試的設置完成IV曲線的自動測試。如：客戶可以要求設備自動根據所設置的、在滿足的輻照強度的范圍和溫度范圍的條件下，自動進行IV曲線的測量。
* Quick-Curve feature to take IV curves quickly with a minimum of user input.
快速曲線功能可以實現對IV曲線的快速測量。
* External Command Set allows users to write programs to control operation of the Daystar IV Curve Tracer.
使用者可以通過寫進程序控制Daystar IV測試儀的測試過程。比如可以設定自動測試的間隔時間、在哪些溫度范圍內開始測試、在哪些輻照度下進行測試。
* IV Curve normalization (3 types). Can display original and normalized curve on same grid.
IV曲線的修正功能能同時顯示初始和修正后（修正到標準測試條件STC下）的曲線，兩條曲線可以同時出現在同一個坐標圖里。
* Multi-plot capability to study multiple curves on one graph.
Multi-plot可以實現將多條曲線畫在在同一個圖里對比分析。
* Pyranometer-Manager allows quick and easy switching between connected pyranometers.
Pyranometer-Manager可以實現對連接著的各個日射強度計進行快速的開關。
* import and Export functions in IVA and XML formats.
可實現以IVA和XML格式數據的輸入輸出。
* High contrast display mode for ease of use outdoors.
高分辨率顯示模式極大地方便了戶外使用。
* Convenient method to recall default settings for different PV systems.Useful when taking repeated IV curves of different systems.
能方便地為不同的系統，重新修訂錯誤（或不大合適的）設置。該功能這在對不同的系統進行重復的IV測試時，是非常有用。

軟件更多特點如下：
A software program, IVPC, is provided with each Daystar DS-100 I-V Curve Tracer. This menu-driven software controls the I-V curve tracer, transfers I-V curve data to the computer for storage, and includes a toolset to manipulate, normalize, display and analyze I-V curves. Some key figures are described below.

Data Grid—IVPC shows all I-V curves in a data grid with user-selected headers such as date, name, power, irradince, etc. Any of fourteen values in the curve file may be used as column headers.
Displaying Curves—IVPC displays single I-V curves or multiple curves using the Multi-curve feature.
Copying data/curves—IVPC provides several methods for copying and pasting curve data to popular word processing and spreadsheet programs.
Normalization—IVPC includes three methods for normalizing an I-V curve to standard conditions; ASTM-E1036 1993 and 1996, and a quick approximation method based on scaling current for irradiance and adjusting voltage for temperature differences.
Attached sensors—IVPC automatically reads, translates, and stores irradiance values from connected pyranometers and temperatures from connected thermocouples. These data are used for normalization.
IVPC is updated periodically and the latest version is available here