Bosch Appliances 3.7SC3100 Acceptable Antenna Types, Pre-InstallationRequirements, Description

SC3100

Pre-Installation Requirements

All sales personnel must be required to utilize the IT1500 Tester with a minimum of 9dB attenuator installed between the IT1500 Tester and the Tester Antenna to determine if two-way radio communication between the prospective customer site and the Central Station SC9000 computer

IMPORTANT is possible before the job is sold.

After the initial testing is performed by the salesperson, the installer must be required to utilize the IT1500 Tester, with a minimum of 9dB attenuator installed between the IT1500 Tester and the Tester Antenna, to determine the proper antenna location within the customer site for installation.

The IT1500 is a portable tester which transmits a radio signal from the remote customer site to the Central Station SC9000 computer and receives an acknowledge (ACK) message to verify a successful two-way communications link for that particular geographic location and antenna position.

REMEMBER! Moving the antenna location as little as 4 in. (10.2 cm) in either direction can mean the difference between a trouble-free site, or an angry customer who requires multiple service calls.

3.7SC3100 Acceptable Antenna Types

The SC3100 is usually installed using the factory supplied omnidirectional (OMNI) antenna. However, if testing using the IT1500 Tester, with a minimum of 9dB external attenuator installed between the Tester and the Tester antenna, shows that the factory supplied omnidirectional antenna is not sufficient, the installer may choose to use a direction, gain antenna. This type of antenna is usually referred to as a beam or Yagi type antenna. The following is a partial listing of acceptable types of antennas for installation on or external to the SC3100 Radio Communicator. Both the omnidirectional and Yagi type antennas are available to order directly from Bosch Security Systems. Call (800) 289-0096 for more information.

Bosch Security Systems factory supplied SAFECOM omni-directional antenna:

Bosch Security	Description	Frequency Range
Systems Part Number
SC921-xx	½ wave, 2.5 dB gain, RUBBER DUCK	400-512 MHz
C740A	3.0 dB gain, Omni Whip	450-470 MHz
C742	10.0 dB gain, Directional (Yagi)	450-470 Mhz

Table 1: SC3100 Antenna Types

	SC3100 Operation and Installation Guide
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