Filter
Top Products
Installation and Configuration
Initial Inspection
18 Operating Manual for RS-232 for XT/HPD Series Power Supply
Figure 2.3, RS-232 Interface PCB continued.
JUMPER SELECTION
J95 Local OVP control selection
[closed] [default]. See
page 29.
[open] See
Table 2.13, on page 29.
J117 User TTL shutdown (S/D)
selection
[1-2] User TTL S/D line active low.
[2-3] [default] User TTL S/D line active high.
J217 Remote OVP Control Selection
[closed] [default]. See
page 29.
[open] See
Table 2.13, on page 29.
J7 RS-232 (J5) transmit and
receive pin selection
[3-1] Transmit on pin 3 [default]
[4-6] Receive on pin 2 [default]
[3-5] Transmit on pin 2
[4-2] Receive on pin 3
J8 RS-232 flow control selection of
RTS/CTS (ready to send/clear
to send) or DTR/DSR (data
terminal ready/data set ready)
[2-4][3-5] [default] RTS input on pin 7 (used with
CTS output on pin 8)
[2-4][1-3] DTR input on pin 4 (used with DSR
output on pin 6)
J9 RS-232 flow control selection of
RTS/CTS or DTR/DSR
[1-3][4-6] [default] CTS output on pin 8 (used
with RTS input on pin 7)
[3-5][4-6] DSR output on pin 6 (used with DTR
input on pin 4)
Note: All other jumpers are not user-selectable.
LED INDICATORS
CR141 Red Diagnostic LED Bus error or soft restart on Slave circuitry.
CR14 Red Diagnostic LED Soft restart on Master circuitry.
CR13 Green Diagnostic LED Bus error on Master circuitry.
EPROMS
U95 Slave EPROM See revision number stamped on EPROM.
U18 Master EPROM See revision number stamped on EPROM.