Alarm receiver/telephone line simulator
for connecting Contact-ID alarm panel directly
with attenuating signal input and adding random noise
for simulating bad telephone line conditions
and for analyzing received alarm signal timing and amplitude

Preliminary information with subject to change

Copyrights Micro Seven, Inc., 2016

LS15E1 contains one simulated telephone line/FXS port for interfacing Contact-ID alarm panel. LS15E1 provides all necessary electrical signals for alarm panel including detecting dial tone, dialing telephone numbers, providing handshake signal and kiss-off tone. LS15E1 receives Contact-ID signals from alarm panels, and transmits ASCII equivalent characters of the received signal to PC via RS232 interface. A demo central station software displays decoded alarm messages. Bi-directional signal paths between LS15E1 and alarm panel may be attenuated for 20dB by provided Windows based control software. Random noise may also be injected to bi-directional signals with its amplitude adjusted also by the control software. Trigger signal for loop is located at Line 2 connector.


Features of Alarm-Receiver Simulator portion of LS15-E1


- Small, 4" x 1.75" x 7.5"
- Generation of handshake and kiss-off tones
- RS232C interface to transmit alarm messages to PC and the alarm receiver software provided
- Contact-ID alarm-receiver simulator
- Dialed number display at PC accepting any telephone number
- Received DTMF signal amplitude data and timing output at PC
- Handshake signal frequency programmable and also amplitude programmable
- Kiss-off tone frequency programmable and also amplitude programmable
- Random noise with amplitude programmable inserted both signal directions between alarm panel and LS15E1
- Duration of handshake tone for each frequency component is programmable.
- Programmable delay between alarm signal received and generation of kiss-off tone
- Trigger signal of loop open/close for alarm panels is included.
- Holding kiss-off tone generation


Telephone number receiving: any telephone number with dialed number display output using the control software


DTMF dialing signal power: -13dBm to +5dBm per a frequency with maximum 4dB difference between frequencies.

Pulse dialing: Break period: 45 to 75 ms (60 ms nominal), make period: 30 to 60 ms (40 ms nominal)


DTMF detecting signal power for Contact-ID alarm messages: -23dBm to +5dBm per a frequency with maximum 4dB difference between frequencies as a factory standard, the DTMF detection threshold programmable by the control software

Alarm message DTMF signal on time (Burst ON time): 50 ms minimum

Alarm message DTMF signal off time (Burst OFF time): 50 ms minimum 400 ms maximum

Note: Contact ID protocol requires Burst ON and OFF times to be 50 ms minimum and 60 ms maximum.

Detailed DTMF on/off timing received alarm panels are displayed in the PC screen i.e. 50 for 50ms 99 for over 99ms

Received DTMF signal amplitude data is displayed on screen.


Handshake tones:


As a factory standard:

1400: 1400+/- 1Hz, duration of 100 ms +/- 1.5 ms, silence period of 100 ms +/- 1.5 ms, and

2300Hz: 2300+/-2 Hz duration of 100 ms +/- 1.5 ms

Frequencies of handshake signal are programmable for +/- 20% using the control software. Also duration of handshake tone is programmable.


Kiss-off tones: 1400 +/- 1 Hz with duration of 750 ms as a factory standard. The duration of kiss-off tone is programmable between 10ms and 2.5seconds.

Frequency is programmable for +/- 20% using the control software.

Programmable delay time in second between received good Contact-ID messages and generation of kiss-off tone. The range is between 0 and 10 seconds.

Kiss-off generation hold off feature is available using the control software.


Kiss-off and handshake tones amplitude: selectable among -14 dBm, -20 dBm, and -30 dBm by control software as a factory standard

Programmable-between 6 dBm and 40 by the control software


Bi-directional signal paths: insertion losses are 0 or 20 dB. Random noise is added to each signal path for 10 dBm and 60 dBm.

Line impairment condition may be selected among the following three different simulated telephone line:
1. simulating ideal telephone circuits
2. 20 dB insertion loss
3. 20 dB insertion loss and random noise injection


Battery-feed voltage (loop voltage): -20 volts


Off-hook impedance requirement: 400 ohms maximum DC, 600 ohms nominal AC


Call Progress Tones: single frequency or dual frequency type selected by control software


The duration of disconnect signal is programmable.


Stutter dial tone: selected by control software


Dry-contact output is at line 2 jack for center pins for tripping alarm loop via software control and RS232. The output is selectable Normally Open or Normally Closed.


Front panel control:

Power switch

Power indicator

Line 1: RJ11 connector for alarm panel input (FXS)

Line 2: dry-contact for loop input.

Line Status Display: red LED to indicate off-hook status


Rear panel control: RS232 connector, power connector


RS232C Interface:

Speed: 1200 baud, with one stop bit, no parity bit

The interface signals: Receive Data, Transmit Data, Data Set Ready, Clear-to-send, and ground. The Data Terminal Ready signal is forced high at LS15F meaning that a PC is always ready to receive data from LS15F.

Connector: 9-pin D-sub on LS15F the rear panel

Cable(9-pin M/9-pin F) is provided.

Received alarm messages are computed for the checksum.


AC/DC Adapter: 117VAC +/- 5%, or 230VAC +/- 5%(for optional international AC/DC power adapter)

AC/DC Adapter or Car Battery Adapter input: 12VDC unregulated, 800mA maximum

Calibration: not required because digitally synthesized tones

Power-On Indicator: green LED display

Dimensions: 19 cm (4") W x 4.5 cm (1.75") H x 10 cm (7.5") L

Weight: 400g (0.8 LBS.)

Environmental: Operating temperature: 0 to 35 degree C, Humidity: 85% RH at 35 degree C

Warranty/Service: 6 months limited warranty. No warranty if any factory seal is broken. Service is performed at the factory, usually within 5 working days.



International AC/DC Adapter (117V input unit is a standard.)


Reference: Digital Communication Standard-SIA DC-05-1999.09, Ademco Contact ID Protocol for Alarm System Communications


Software provided: control software and central station demo software


Made in United States of America

Micro Seven, Inc.
1095-K N.E. 25th Hillsboro, OR 97124 U.S.A.
phone: 503-693-6982, fax: 503-693-9742
Home Page: www.microseveninc.com
Email: sales@microseveninc.com