SIM928 srs SIM928-Rechargeable isolated vo...

srs SIM928-Rechargeable isolated voltage source

主要指标与说明The SIM928 Isolated Voltage Source is ideal for applications where ultra-clean DC voltage is required. Voltage can be set between ±20 VDC with millivolt resolution, and the source can drive up to ±10 mA. The output circuit is optically isolated from all earth-referenced charging circuitry, providing maximum flexibility and noise immunity. The system can float to ±40 V, and the output is short-circuit protected.

SIM928 Isolated Voltage Source±20 V isolated voltage sourceUltra-low noise outputTwo switchable, recharging batteriesfor continuous operationBattery lifetime: 1000 charge cyclesOutput floats to ±40 VShort-circuit protectedSIM928 Rechargeable Isolated Voltage SourceThe SIM928 Isolated Voltage Source is ideal for applications where ultra-clean DC voltage is required. Voltage can be set between ±20 VDC with millivolt resolution, and the source can drive up to ±10 mA. The output circuit is optically isolated from all earth-referenced charging circuitry, providing maximum flexibility and noise immunity. The system can float to ±40 V, and the output is short-circuit protected.At the heart of the SIM928 are two independent nickel-metal-hydride rechargeable batteries, each providing up to 12 hours of operation under full load conditions. When a battery is nearly depleted, the SIM928 automatically switches in a second battery. The switchover between batteries is virtually glitch-free, giving you uninterrupted power around the clock. The depleted battery is automatically charged to capacity in about 5 hours. The batteries are guaranteed for 1000 charging cycles, and SRS offers replacement battery sets.In applications that occur over long time intervals, starting with a fully charged battery may be desirable. A battery charge override feature allows you to manually switch in the fully charged battery (assuming it is in “ready” state) at any time.Banana binding posts are provided for the + terminal, - terminal and chassis ground. SIM928 Rechargeable Isolated Voltage SourceOutputOutput range ±20 V, 1 mV resolutionMax. output current ±10 mAFloating output ±40 V (common mode to ground)Noise 10 μVrms (1 kHz bandwidth)Current limit 15 mAShort-circuit duration indefiniteBatteriesNumber of batteries 2 (1 operating, 1 charging/standby)Type Nickel metal hydrideCharge time 5 hrs.Discharge time 12 hrs. (10 mA load)Lifetime >1000 charge cycles, 2 yr. shelf lifeBattery switching Automatically switches batteries when active battery is fully discharged.Switchover glitch <1 mV for <1 msBattery charge override Allows manual switching of batteries. Triggered when front-panel button is held for 5 seconds or more. Only armed when standby battery is in ready state.

GeneralOperating temperature 0 °C to 40 °C, non-condensingInterface Serial via SIM interfaceConnectors Banana binding posts (+ terminal, - terminal, and chassis ground) DB15 (male) SIM interfacePower Power supplied by the SIM900 Mainframe, or optionally by a user-provided DC power supply (-15 V, +24 V and +5 V)Dimensions 1.5" × 3.6" × 7.0" (WHL)Weight 3 lbs.Warranty One year parts and labor on defects in materials and workmanship

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