Specifications

Page 17–12
FOCUS System Manual
4. Bring the FOCUS chassis “on line”.
Click on the “Online” speed button
.
This uploads to the FCS the current status,
settings, operating statistics, etc., for the
FOCUS chassis — and the Pilot Wire
Interface Module.
5. Unlock the FOCUS chassis.
If the chassis is locked, execute the “Unlock
Configuration” command on the FCS Setup
menu or click on the “Unlock FOCUS
Chassis” speed button .
This puts the chassis — and the Pilot Wire
Interface Module — into a configurable state
so that you can change the configuration
during testing.
Figure 17–14.
Remote Terminal Wiring Connections.
Figure 17–15.
Local Terminal Wiring Connections.
6. Set the DTT Input/Output to the
“Enabled” setting.
7. Set the DTT Output Trip Hold Time to the
“0ms. (none)” setting.
8. Set the LOPC Mode to the “OCT-Don’t
short pilot wire” setting.
9. Set the LOCC Mode to the “OCT/NX Do
not xmit signal” setting.
10. Set the DTCC Mode to the “OCT/NX
Don’t Xmit signal to rcvr” setting.
11. Download the settings to FOCUS.
12. Key the local terminal.
Flip the control switch to apply the 125Vdc to
the DTT connection (KEYA and KEYB) on
the local terminal.
The local terminal voltage should be from
40Vdc to 0Vdc.:
For two-terminal lines, perform Step 12 for the
HCB module in the local chassis and then
repeat for the HCB module in the remote
chassis.
For three-terminal lines, perform Step 14 for
the left and then the right HCB module in the
local chassis and then repeat for the left and
right HCB modules in each of the remote
chassis.
Repeat this same sequence for Steps 13 and
14.
NOTE
Control
Switch
12345678
KEY IN
SCOPE
TRIP OUT
ALARM
HCBP
HCBN
P2
Voltage Supply
Source
35 to 250 Vdc
or 120 Vac
330W
1KW
OHM
METER
Control Switch
P2
12345678
KEY IN
TRIP OUT
ALARM
HCBP
330W
HCBN
Voltage Supply
Source
35 to 250 Vdc
or 120 Vac