Figure 6: Ground Start - Bosch DS7200V2-EXP Installation Manual

DS7200V2-EXP | Installation Guide | 2. System Installation
and Setup
2.1.9 Ground Start
Some telephone systems require a momentary
ground input to initiate a dial tone. To interface
with a ground start system, wire PO 1 as shown
in Figure 6. The PO 1 Jumper must be open.
Program PO 1 for Ground Start. See
Programmable Output 1 (PO 1) on page 21 for
programming instructions.
Connect a proper earth ground
reference to the earth ground
terminal.
Ground Start is not intended for use
in fire or combined fire/burglary
applications.

Figure 6: Ground Start

PO1 SELECT
BATT+
BATT-
ALRM PO1 SMK
A B
+
+
1- Place PO1 jumper in OPEN position as
shown
2.1.10 Phone Line Fault
The control panel has a circuit that tests the
phone line for voltage. The normal voltage on a
telephone line is approximately 48 VDC (24 VDC
for some phone systems). The phone line monitor
senses trouble when the voltage drops low
enough (between 1 and 3 V).
If the control panel senses trouble for 40 sec, it
begins a phone line trouble response.
Programming determines the response type. See
"Phone Line Fault Response Options" in the
DS7200V2 Expert Programming Guide (P/N:
4998153891) for details.
Bad line may test OK: The telephone line test
circuit uses the voltage level to test the status of
the phone line. In some instances, a given
telephone line might be out of service without
affecting the voltage on the line. The phone line
monitor cannot recognize this trouble condition.
Bosch Security Systems, Inc. | 04/12 | F01U253045-02
AUXILIARY
STATUS
1
L-1
COM L-2 L-3 COM L-4 L-5 COM L-6 L-7 COM
2.1.11 Communication Failure (Comm Fail)
The control panel routes reports to two routing
destinations. Each destination can be
programmed with two phone numbers or IP
addresses.
The numbers in {} are the numbers assigned to
control panel events.
Communication Attempt Tables on page 123
shows the circumstances when Communication
Failure Events are created. When a Comm Fail
occurs, the control panel responds as follows:
1. Clear (dump) the initiating report and any
pending reports from the dialer buffer for the
destination where the Comm Fail event
occurred.
2. Create a Comm Fail {69} or Alternate Comm
Fail {70} report that includes the Destination
Number (1 or 2). The Alternate Comm Fail
report is used when an alternate
communications path is used (for example,
network communication).
3. The Comm Fail, Comm Restoral {71},
Alternate Comm Restore {72} reports follow
R
the System Status Reports routing.
R1
4. If the Comm Fail occurred on Destination 1
T1
T
and System Status Reports routing is set to
Destination 2 or set to Destination 2 on
Destination 1 fail, then send Comm Fail
L-8
report.
5. If the Comm Fail occurred on Destination 1
and System Status Reports routing is set to
Destination 1 then send a Comm Restore
report with the next report for destination 1.
6. If the Comm Fail occurred on Destination 2
and System Status Reports routing is set to
Destination 1, then send Comm Fail report.
7. If the Comm Fail occurred on Destination 2
and System Status Reports routing is set to
Destination 2 then send a Comm Restore
report with the next report for Destination 2.
8. If a Comm Fail report is sent successfully to
the other destination, a Comm Restore event
should be sent when there is a successful
communication on the failed destination.
EN | 14