KEPCO ATE-DMG SERIES - Manual (Page 53)

ATE-DMG 042314 3-19
1. Connect a 0 to 10V voltage reference to A11J5 pin 1 (pin 6 common); 0V programs the out-
put voltage to zero, 10V programs output voltage to full scale.
2. Connect a 0 to 1V current reference to A11J5 pin 2 (pin 8 common), 0V programs the output
current to zero, 1V programs output current to full scale.
3. Enable the external reference feature from either the front panel (PAR. 3.4.14) or using GPIB
commands (see PAR. B.12).
To access the external reference feature from the front panel, with the power supply in com-
mand entry status, press MENU key until the top line of the display reads Extern. Ref On or
Extern. Ref Off. and the bottom line reads 0=Off, 1=On. Enter 1 to enable or 0 to disable and
press ENTER to enable or disable the feature.
3.6 DIGITAL REMOTE MODE PROGRAMMING
ATE-DMG Power Supplies may be programmed over a control bus using SCPI (Standard Com-
mands for Programmable Instruments). SCPI provides a common language conforming to IEEE
488.2 for instruments used in an automatic test system. The control bus used must be the IEEE
488 standard communication bus (General Purpose Interface Bus, GPIB). Refer to Table 2-4 for
input/output signal allocations.) Most power supply functions available from the keypad can be
programmed via remote commands, in addition to some that are not available from the keypad
(e.g. triggering, and local lockout).
This section includes a discussion of GPIB bus protocols (PAR. 3.6.1), instructions for changing
the GPIB address (PAR. 3.6.3), followed by a detailed explanation of SCPI programming (PAR.
3.7)
3.6.1 IEEE 488 (GPIB) BUS PROTOCOL
Table 3-5 defines the interface capabilities of the ATE-DMG power supply (Talker/Listener) rela-
tive to the IEEE 488 (GPIB) bus (reference document ANSI/IEEE Std 488: IEEE Standard Digital
Interface for Programmable Instrumentation) communicating with a Host Computer—Controller
(Talker/Listener). Tables 3-6 and 3-7 define the messages sent to the ATE-DMG, or received by
the ATE-DMG, via the IEEE 488 bus in IEEE 488 command mode when ATN is asserted and
IEEE 488 data mode, respectively. These messages are enabled during the “handshake” cycle,
with the ATE-DMG power supply operating as either a Talker or a Listener.