4.3 DCE/DTE CONNECTION
The Model 2020RC rear card has two UD-26 connectors, labeled
“A1” and “B1” (see figure 5, below). Port A1 connects to the RS-232
device. Port B1 connects to the V.35 device. As discussed in
Section
3.1
, the ports may be configured as DCE-to-DTE or DTE-to-DCE.
To connect computing devices to ports A1 and B1 on the Model
2020RC, follow these instructions:
1. Configure the Model 2020RC for your specific application
according to the instructions in
Section 3.0
of this manual.
2. Connect computing devices to the Model 2020RC using multipair
adapter cables (see
Appendix B
for a list of custom adapter
cables available from Patton Electronics). Either the RS-232 or the
V.35 device may supply the clock. The wiring of your adapter
cables should support your system’s timing requirements.
10
chassis.
4.
Push the front card
gently
into the card-edge receptacle of the rear
card. It should "click" into place.
5.
Secure the front card using the spring loaded thumb screws.
NOTE:
Since the Model 1000R16P chassis allows "hot swapping"
of cards, it is not necessary to power down the rack when you i
install or remove a Model 2020RC.
9
Figure 6.
The Model 2020RC front panel, showing LED positions
Model 2020RC
Power
TD
RD
CTS
CD
RTS
DTR
