BK Precision 1739 Bedienerhandbuch

Model 1739 DC Power Supply with 0.1mA Settable Resolution INSTRUCTION MANUAL

8 CURRENT CONTROL 7) Current Coarse Control. Adjusts current limit in constant voltage mode. Adjusts constant current value in constant current mode.

9 4 Operating Instructions Safety Precautions Use only a polarized 3-wire AC outlet. This assures that the power supply chassis, case, and ground te

10 4.1 Instrument Hook-Up 1. Turn off the power supply and the equipment to be powered during hook-up. 2. Connect the positive polarity of the devi

11 Figure 3 (A and B) - Grounding Possibilities Figure 3 (C and D) - Grounding Possibilities

12 4.2 Typical Constant Voltage Operation 1. Before connecting the device to be powered to the power supply, determine the maximum safe load current

13 4.3 Setting Current Limit 1. Determine the maximum safe current for the device to be powered. 2. Temporarily short the (+) and (-) terminals of

14 4.4 Typical Constant Current Operation 1. Before connecting the device to be powered to the power supply, determine the maximum safe voltage to b

15 4.5 Constant Voltage/Constant Current Characteristic The working characteristic of this power supply is called a constant voltage/constant current

16 4.6 Saving the Power Supply’s Current State The current state of the power supply is saved after 2 seconds from the last adjustment or after the

17 4.8 Connecting Two Power Supplies in Parallel Two power supplies may be connected in parallel to double the maximum load current. In this configu

18 If the current equalizing resistors are not well matched, it is preferable that the voltages be slightly unbalanced to achieve current balance. Be

19 5.1 RS232 Configuration Overview Baud Rate 9600 bps Parity Bits none Data Bits 8 Start Bits 1 Stop Bits 1 Flow Control Xon / Xoff Terminatio

20 CURR 3000.0<CR> 3. VOLT?<CR> This command returns the voltage measured to the output terminals of the power supply: xx.xxV<CR>

21 6 Maintenance WARNING The following instructions are for use by qualified personnel only. To avoid electrical shock, do not perform any servicing

22 6.3 Calibration Calibration is a procedure that ensures that the power supply will work properly, with parameters specified within the Specificati

23 I 0 Low current calibration I F Full current calibration The voltage coarse and fine and current fine knobs are

24 3. Full voltage calibration To finish the voltage calibration procedure, the full voltage calibration must be done after the zero voltage calib

25 b) Connect a digital ammeter (B&K Precision 5491B or similar instrument) to the output terminals of the power supply to initiate the zero cur

26 b) Connect a digital ammeter (BK Precision 5491B or similar instrument) to the output terminals of the power supply to initiate the full current

27 6.4 Instrument Repair Service Because of the specialized skills and test equipment required for instrument repair and calibration, many customers

1 1 Safety Summary The following safety precautions apply to both operating and maintenance personnel and must be observed during all phases of oper

28 Er 20: CC not high Er 21: CV not low Er 22: DAC out of range Er 23: ADC out of range Er 24: ADC system calibration failed Er 25: DAC zero voltage c

29 7.3 Command Errors ”Communication Error<CR>” : RS232 framing, parity, or overrun error “Syntax Error<CR>” : invalid

30 Temperature 32 °F to 104 °F (0 °C to 40 °C) Humidity 75% R.H. Temperature coefficient (0 °C~35 °C) ±(％of output+offset) 300 ppm/°C Storage Temperat

31 9 Service Information Warranty Service: Please go to the support and service section on our website at www.bkprecision.com to obtain an RMA #. Re

32 10 Limited Three-Year Warranty B&K Precision Corp. warrants to the original purchaser that its products and the component parts thereof wil

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2 WARNINGS AND CAUTIONS WARNING and CAUTION statements, such as the following examples, denote a hazard and appear throughout this manual. Follow all

3 Compliance Statements Disposal of Old Electrical & Electronic Equipment (Applicable in the European Union and other European countries with sepa

4 Contents 1 Safety Summary ... 1 2 Introduction ...

5 2 Introduction Description The B&K Precision model 1739 is a high quality, low current DC power source. This power supply provides 0-30 volts

6 Reverse polarity protection prevents accidental damage to the power supply from improper connection to an external device, and current limiting prot

7 3 Quick Reference 3.1 Front Panel Figure 1 - Front Panel INDICATORS Either the CV or CC LED indicators will be lit whenever the unit is operati