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  Precision measurement of resistance                DC current bias for semiconductor devices
   High stability current driver for semiconductor    Light emitting devices ( LEDs, Laser diodes )
   High precision DC current bias for sensors         High stability DC current bias for any precision
   ( Thermal sensors, Hall sensors )                  Measurement of samples
   Automatic resistance measurements with Other intelligent instruments

    DC current output and Settings:
      Setting resolution:  4 1/2 digits
      Output range:  0-100mA (YL4012-100)    
        Output range:  0-200mA (YL4012-50)
        Output range:  0-1A (YL4012-10)
        Setting resolution: 0.01mA (YL4012-100/50)
                                     0.1mA (YL4012-10)
      Output accuracy:
                    ±0.05% of settings ±100nA (YL4012-100/50)
                    ±0.05% of settings ±1uA (YL4012-10)

    Temp. coefficient: ±0.01% of settings/℃

  DC voltage Compliance Settings:
       Compliance range: 10-100V (YL4012-100)
       Compliance range: 5-50V (YL4012-50)
       Compliance range: 1-10V (YL4012-10)
       Compliance step: 1V (YL4012-100/50)
       Compliance step: 0.1V (YL4012-10)
       Setting accuracy: better than 1% of setting
  Front panel 
      Display: 2 line by 16 character

               backlight LCD. LED indicators.

      Display unit:  Current: mA;  Voltage: V
      Keypad: 10 keys functional keypad.
      Operation: Keypad intuitive operation
                       Display prompts

                   Front panel lockout.

Rear panel: LINE IN / RS-232 / OUTPUT
YL4012  Current Source
Front panel:LED、keypad

RS-232C interface capabilities

      Baud rate:  9600, 19200, 57600 and 115200bps.
      Connector type:  9-pin D-style female plug.
      Connecting wiring:  DCE configured.
      Voltage level:  EIA RS-232C Specified.
      Transmission dist.:  15m or 50 feet max.
     Transmission mode:  Half duplex.
     Hardware handshake:  None.
      Character bits:  1 start, 8 data, no parity, 1 stop.
      Parity:  None.
      Terminator:  CR (0DH).
      Command rate: 6 commands max per second

Output mode: 4-wire at rear panel

                        Quadrant I (IOUT>0, VOUT>0)
Max. output power: 10W
Output connector:4 wire connector plug at rear panel
Ambient temp.: 15-35 ℃at rated accuracy
                         5-40℃ with reduced accuracy
Power requirement
                 AC 220V(-10% to +5%), 50-60Hz, 40VA max
Size: W′H′D = 217mm×88mm×317mm
 Heat sink and connector plug on rear panel not involved

Weight: 2kg typically.

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