KEPCO MBT Series - Manual (Page 21)

MBTSVC111609
1-5
1.4 FEATURES
1.4.1 LOCAL CONTROL
Two front panel optical encoder controls and/or keypad entries are utilized for setting and
adjusting output voltage and current under Local control. The keypad's keys are organized to
either directly execute commands, or to introduce a program that can either run once or be
cycled. Calibration of the unit is facilitated by a menu-driven procedure.
1.4.2 REMOTE CONTROL
Figure 1-3 shows remotely controlled Power Supply configurations using Kepco products.
All MBT models can be remotely controlled via the IEEE 1118 serial bus using the following
Kepco Power Supply Controllers (MG and MGR Models must have the “G” option disabled):
• TMA PC-27 Plugs into a DOS-compatible PC (half-card slot).
• TMA 4882-27 Stand-alone unit, connected to an RS232C or IEEE 488 bus.
• MST 488-27 Module (1/9 rack), plugs in Kepco RA 55 Rack Adapter where it inter-
faces with an RS232C or IEEE 488 bus.
• TMA VXI-27 Module, plugs into VXI main frame equipped with a GPIB Controller
Module; without a GPIB Controller, you must have a VXI-based embed-
ded CPU and a TMA VXI-27 module.
MBT Power Supplies can also be controlled remotely via the keypad of any MBT Series Power
Supply connected to the daisy chain as long as there is one Models MG or MGR power supply
with the “G” option enabled included in the daisy chain. MBT Models MG and MGR with the “G”
option enabled can be controlled directly via the RS232-C bus or the IEEE 488 bus.
1.5 OPTIONS
1.5.1 OPTION G - SINGLE BOARD COMPUTER
The Single Board Computer (SBC) included on “G” option models (MG and MGR) enables the
RS232-C and GPIB (IEEE 488) communication buses and permits an MBT power supply to
function as a “master” to control other power supplies. A switch accessible through the top cover
allows disabling of the “G” Option circuitry to allow a “G” option unit to function as a “slave” and
be controlled by another “G” option unit functioning as a “master”. In configurations with more
than one MBT Series Power Supply, only one unit can have the “G” option enabled; if other “G”
option units are used, the “G” option must be disabled.
1.5.2 OPTION R - OUTPUT/POLARITY REVERSAL RELAYS
MBT units with the “R” option (MR and MGR) contain Output/Polarity Reversal relays and asso-
ciated control circuits, allowing the output to be enabled/disabled, polarity reversed and the local
selection of current mode (with the output disabled) by connecting an internal shunt across the
output. Disabling the MBT as a voltage source requires opening the connection between the
MBT and its load. Disabling the MBT as a current source requires that the MBT output terminals
be shorted. The Polarity Reversal relays permit two-quadrant operation of the MBT.