Operation; Led Status Monitors; The "Td" And "Rd" Indicators; The "Rts" And "Cd" Indicators - Patton electronics 1065RC User Manual

HOST FIRST SLAVE
+XMT-----------------------------RCV+
------------------------------------------------------------------RCV+
-XMT-----------------------------RCV-
------------------------------------------------------------------RCV-
+RCV-----------------------------XMT+
------------------------------------------------------------------XMT+
-RCV-----------------------------XMT-
------------------------------------------------------------------XMT-
Figure 13. Two-pair star wiring for Model 1065RC host and slaves
HOST FIRST SLAVE
+XMT-----------------------------XMT+
------------------------------------------------------------------XMT+
-XMT-----------------------------XMT-
------------------------------------------------------------------XMT-
Figure 14. Single-pair star wiring for Model 1065RC host and slaves
SECOND SLAVE
SECOND SLAVE
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5.0 OPERATION

Once you have configured each Model 1065RC properly and con-
nected the twisted pair and RS-232 cables (see Section 4.0), you are
ready to operate the units. This section describes reading the LED sta-
tus monitors, powering-up and using the built-in V.52 and V.54 test
modes.

5.1 LED STATUS MONITORS

The Model 1065RC features six front panel status LEDs that indi-
cate the condition of the modem and communication link. Figure 15
shows the front panel location of each LED. Following Figure 15 is a
description of each LED's function.
Figure 15: The Model 1065RC front panel, showing LEDs and switches

5.1.1 The "TD" and "RD" Indicators

The "TD" and "RD" indicators blink green with data activity. Off indi-
cates a low RS-232 logic level, green indicates a high RS-232 logic
level. Note: RS-232 devices idle in a low state, so the LED will be off
if the connections are correct and the RS-232 device is in an idle state.

5.1.2 The "RTS" and "CD" Indicators

The "RTS" and "CD" indicators will be off for a "low" signal or green
for a "high" signal. RTS lights for an incoming signal on RS-232 pin 4.
CD lights for an incoming signal on the line side, and the resulting out-
put signal on RS-232 pin 8.
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