Linear LINMODEM Owner's Manual

LINMODEM Setup Requirements

INSTR,INSTL,LINMODEM
Linear P/N: 216618 B
Material: 20 Lb. Mead Bond
Ink: Black
Size: 8.500" x 11.000"
Scale: 1-1

216618 B

Copyright © 2001 Linear Corporation

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USA & Canada [phone] & [phone]

Toll Free FAX [phone]

www.linearcorp.com

USE HOOK & LOOP
FASTENERS TO ATTACH
MODEM MOUNTING PLATE
TO ACCESS ENTRY UNIT

CONNECT MODEM CABLES

REFER TO WIRING
DIAGRAM INSIDE
MODEM CASE

RS-232

PHONE LINE IN

PHONE LINE OUT

(TO ACCESS ENTRY BOARD)

POWER

(FROM AM/II)

PWR

GND

CONNECT MODEM
POWER TO READER-IN
POWER TERMINALS
ON AM/II

SNAP MODEM CASE
ONTO MOUNTING PLATE

DRESS CABLES

1

2

3

NOTE: THE TELEPHONE
LINE TERMINAL BLOCK
CAN BE USED INSTEAD OF
THE MODULAR JACKS TO
HARDWIRE THE TELEPHONE
LINE AND/OR TO MAKE THE
TELEPHONE CONNECTION
TO THE ACCESSENTRY BOARD

13

1415161718

WATCH

POLARITY!

Figure 1. Modem Installation in AccessEntry Unit

The LINMODEM can be used easily with the AM/II, AE-1, or AE-2 Access Control
Systems. It is primarily designed to be used with AM/II Version 5.0 or newer firmware,
but it can also be used with firmware Version 4.2.

✶

NOTE: The AM/II Installation & Programming Instructions has detailed instructions for
programming the AM/II.

Installation includes the mechanical mounting, electrical connections, and changing
the initialization string(s) sent to the LINMODEM by the AM/II.

AccessEntry Installation

Stick the loop/hook fasteners to the bottom of the LINMODEM. Place the LINMODEM
in the space provided to the right of the AM/II. Make connections as indicated in
Figure 1 for power, RS-232 and phone line.

Changing Modem Initialization Strings

After the network has been installed, verify the initialization strings before operating
the equipment.

Using Linear’s AccessBase software, select SETUP for NODE 1 and click the RS-232
tab.
String 1 should be:
String 2 should be:
If the modem strings are different, set the modem strings to the values above.

SURE TO ENTER ZERO, NOT THE LETTER “O” IN THE INITIALIZATION
STRINGS.

Program the network, then reset the Node by clicking on NODE 1, then select REAL
TIME CONTROL, then select RESET NODE. This loads the new modem string into
the LINMODEM.

ATH0E0&D0S37=9F8&Q0L3
ATS0=0Q0N0&W0Z

BE

AM/II Version 4.2 Programming

The following programming activities are performed on the AM/II in programming
Area 24. From the main menu, use the [⇑], [⇓] key, or enter “24" on the keypad to
scroll to ”RS-232 Port Setup Enter Program Area: 24" and press [OK]. When finished
programming, press RESET to load the new modem strings into the LINMODEM.

✓

WARNING: Be careful not to overwrite the “=” sign as there is no way to
enter this from the AM/II keypad.

STEP 1 Modem Initialization String 1

➊

Use [⇑] or [⇓] to scroll to “Modem Init. String 1”.

➋

The factory set initialization string is:

ATQ1E0&D0S0=1%9600

Press [⇒] until the “Q” is blinking, then enter:

H0

Press [⇒] until the “%” sign is blinking, then enter:

F8&Q0

The new modem initialization string should read:

ATH0E0&D0S0=1F8&Q0

➌

Press [OK].

Modem Initialization String 2 is correct from the factory.
It should read:

AT&W0Z

LINMODEM INDICATORS

The four LEDs on the modem’s circuit board indicate modem conditions and data
flow. The small, round speaker in the modem monitors the phone line while the
modem is establishing communications.

- Receive. Flashes when the modem is transferring recei ved data or result codes to the AM/II

RX LED

over the RS-232 interface.

- Transmit. Flashes when the modem i s receiving commands or data from the AM/II over the

TX LED

RS-232 interface.

- Data Carrier Detect. Lights when an incomming carrier from another modem is detected on the

DCD

phone line. The LINMODEM will hang up if the incomming carrier is lost.

- Data Terminal Ready. Lights when the modem has been initialized by the command string from the

DTR

AM/II.