Installation and Configuration
Initial Inspection
18 Operating Manual for RS-232 for XPD Series Power Supply
Figure 2.3 RS-232 Interface PCB
JUMPER SELECTION
J2 Local OVP control selection [closed] [default]. See page 28.
[open] Front Panel OVP Control.
J3 User TTL shutdown (S/D)
selection
[1-2] User TTL S/D line active low. See page 31.
[2-3] [default] User TTL S/D line active high.
J20 Remote OVP Control Selection [closed] [default]. See page 28.
[open]
J10 RS-232 (J4) transmit and
receive pin selection
[3-1] Receive on pin 3 [default]
[4-6] Transmit on pin 2 [default]
[3-5] Receive on pin 2
[4-2] Transmit on pin 3
J16 RS-232 flow control selection of
RTS/CTS (ready to send/clear
to send) or DTR/DSR (data
terminal ready/data set ready)
[1-3][4-6] [default] RTS input on pin 7 (used with
CTS output on pin 8)
[3-5][4-6] DTR input on pin 4 (used with DSR
output on pin 6)
J17 RS-232 flow control selection of
RTS/CTS or DTR/DSR
[2-4][[3-5] [default] CTS output on pin 8 (used
with RTS input on pin 7)
[2-4][1-3] DSR output on pin 6 (used with DTR
input on pin 4)
Note: All other jumpers are not user-selectable.
LED INDICATORS
D1 Red Diagnostic LED Bus error or soft restart on Slave circuitry.
D4 Red Diagnostic LED Soft restart on Master circuitry.
D5 Green Diagnostic LED Bus error on Master circuitry.
EPROMS
U18 Slave EPROM See revision number stamped on EPROM.
U1 Master EPROM See revision number stamped on EPROM.
