Page 2 - Content
2 Content Quick Reference ..............................................................................................................................3 About your safety ......................................................................................................................3 General ...
Page 3 - Quick Reference; About your safety; General information; operating instructions located in the manual.
3 Quick Reference About your safety Pease review the following safety precautions before operating our equipment. General information The following safety precautions should be observed before using this product and any associated instrumentations. Although some instruments and accessories would be ...
Page 4 - Certification and Warranty; Certification; Introduction
4 Certification and Warranty Certification We certify that this product met its published specifications at time of shipment from the factory. Introduction The 1785B - 1788 Series power supplies are high performance single-output programmable DC power supplies with communication interface. The combi...
Page 5 - The Front Panel at a Glance
5 The Front Panel at a Glance 3 4 5 7 6 1 2 3 4 5 7 6 1 2 ? 10 digits VFD display ? Status information for operating mode and working status ? Power switch ? Number keys ? Function keys ? UP/DOWN and ENTER key ? Output terminals
Page 6 - MAX VOLT
6 Function keys description Set the output voltage value Set the current value Save the present settings to a specified register location(1~16) Recall a saved settings from location ‘‘1’’through ‘‘16’ Menu function to set related parameters of the power supply Output ON/OFF, to enable/disable the ou...
Page 7 - The Rear Panel at a Glance; Cooling window
7 Link The power supply is in communication mode Rmt The power supply is in remote mode Cal The power supply is in calibration mode The function keys are locked by password The rotate speed of cooling fan ON Output ON Oh Overheat protection state CV The power supply is in constant voltage mode. CC T...
Page 8 - Chapter 1 Quick Start; Preliminary Checkout; Check the list of supplied items.; Connect the power cord and turn on the power supply.; ERR EEPROM; Warning
8 Chapter 1 Quick Start One of the first things you will want to do with your power supply is to become acquainted with the front panel. The exercises in this chapter prepare the power supply for use and help you get familiar with some of its front-panel operations. This chapter is intended for both...
Page 10 - If the Power Supply Does Not Turn On; Verify that there is AC power to the power supply.; To Adjust the Carrying Handle
10 zero. 7. Ensure that the current can be adjusted from zero to the full rated value. 8. Turn off the power supply and remove the short wire from the output terminals. 1.3 If the Power Supply Does Not Turn On Use the following steps to help solve problems you might encounter when turning on the ins...
Page 11 - Bench-top viewing positions Carrying position; To Rack Mount the Instrument
11 Bench-top viewing positions Carrying position 1.5 To Rack Mount the Instrument You can mount the power supply in a standard 19-inch rack cabinet using the IT-E151 rack mount kit . Note: Remove the carrying handle and the two plastic ears before rack-mounting the instrument. To remove the handle, ...
Page 12 - Chapter 2 Specifications
12 To rack mount two instruments side-by-side, order rack mount kit IT-E151, you needn’t to use the front cover panel. Dimension unit (mm) Chapter 2 Specifications 2.1 Specifications Parameter 1785B 1786B 1787B 1788 Voltage 0 ~ 18V 0 ~ 32V 0 ~ 72V 0 ~ 32V Current 0 ~ 5A 0 ~ 3A 0 ~ 1.5V 0~6A Output R...
Page 13 - Supplemental Characteristics; Maximum input power
13 Voltage < 0.05% + 10mV Programming Accuracy, 12months, (@ 25 °C ± 5 °C) ± (% of output+offset) Current < 0.2 % +10mA Voltage < 0.05% + 15mV(<20V), < 0.05% + 120mV( = 20V) Readback Accuracy 12months, (25 °C ± 5 °C) ± (% of output+offset) Current < 0.1 % +15mA Voltage = 1mVrms/3mV...
Page 15 - Constant Voltage Operation
15 Chapter 3 Front-panel Operation So far you have learned how to install your power supply and do quick start. During the quick start, you were briefly introduced to operating from the front panel as you learned how to check basic voltage and current functions. This chapter describes in detail the ...
Page 16 - Saving and Recalling Operation
16 Step2. Press key. Step3. Use the numeric keys to or ? and ? keys to change the voltage value. Step4. Press to confirm the value 3.3 Constant Current Operation The constant current output range is from 0A to the maximum current value of each type. It is very easy for you to set the constant curren...
Page 18 - The start bit of your desired password shouldn’t be 0.
18 n Setting Address (>ADDRESS) This instruction can set the communication address for each power supply. The address range is from 0 to 254. Before the communication, you must make sure that there is same address between the power supply and the computer. n Setting password for function keys(>...
Page 19 - Chapter 4 Remote Operation Mode; interface connector; IT-E131 communication cable; Power; PC; Communication setting; Start
19 Chapter 4 Remote Operation Mode The DB9 interface connector on the rear panel of the power supply can be transferred to RS-232 interface, the following information will tell you how to use the computer to control the output of the power supply. 4.1 IT-E131 Communication cable The DB9 interface co...
Page 20 - Communication protocol; Setting the remote control mode; Note
20 4.3 Frame format Frame length is 26 bytes, the format is as follows: Start Address Command 4-25 bytes are information content Check sum Description: 1 . Start bit is AAH, occupies a byte. 2 . Address range is 0 to FE , occupies a byte. 3 . Command occupies a byte. a . 20H----Setting the remote co...
Page 21 - Note: You can not control the power supply from the front panel when
21 3 rd byte Command ( 20H ) 4 th byte Operation mode(0 represent front panel operation mode, 1 represent remote operation mode) 5 th to 25 th byte System reserve 26 th byte Check sum 2 . Setting the output state ON/OFF (21H) 1 st byte Start bit (AAH ) 2 nd byte Address(0~0XFE) 3 rd byte Command (21...
Page 23 - Entering the calibration mode; Reading the calibration state
23 11 th byte To set the low byte of current value 12 th byte To set the high byte of current value 13 th byte Byte 0 of the maximum voltage value 14 th byte Byte 1 of the maximum voltage value 15 th byte Byte 2 of the maximum voltage value 16 th byte Byte 3 of the maximum voltage value 17 th byte B...
Page 27 - Chapter 5 Calibration
27 26 th byte Check sum Chapter 5 Calibration We suggest you to calibrate the power supply yearly. We provide you a set of calibration software Power Calibration (PC1785B_1788). It is very easy to calibrate the power supply by the calibration software. Please make the following preparation before th...
Page 29 - Reset to the default calibration settings
29 When you measure the output voltage or short current by the multi-meter, please make sure the value is correct. Otherwise it will cause the calibration failure and let the output turbulence. Please make sure that the maximum current of your multi-meter is higher than the maximum current of the ca...
Page 33 - If there is a Real Amps beyond the range in any step,
33 3. Program setting 6.3.4. GO/NG Test Function Program: Right-click on the Program area, the program tools (Append a line, Insert a line, Delete a line, Delete Select etc.) will appear on the window. Click the tools to program the steps. Double-click on each value to change them from key board as ...
Page 36 - Limited One-Year Warranty; form a sales receipt.
36 Limited One-Year Warranty B&K Precision Corp. warrants to the original purchaser that its product and the component parts thereof, will be free from defects in workmanship and materials for a period of one year from the data of purchase. B&K Precision Corp. will, without charge, repair or...
Page 37 - Service Information; and accessories that you are using with the device.
37 Service Information Warranty Service: Please return the product in the original packaging with proof of purchase to the below address. Clearly state in writing the performance problem and return any leads, connectors and accessories that you are using with the device. Non-Warranty Service: Return...
