Soutwest Microwave MicroWave 330, Руководство по установке

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11 Version 0
MicroWave 330R Receiver RF Assembly consists of a parabolic antenna (identical to antenna of Transmitter)
and a Schottky diode detector. The detector converts modulated K-band energy from Transmitter into a low
frequency signal for processing by Receiver Circuit Board.
The received audio signal is amplified by an automatic gain control (AGC) preamplifier enabling the
preamplifier output to be held to a constant level regardless of Transmitter Receiver distance (distance must be
within maximum distance of link). This also set the “Path Fault” alarm parameter.
The detector output is a voltage level that is held constant under normal conditions by the slow-acting AGC
loop. Rapidly changing signal strength caused by a target moving into the microwave beam is not affected by
AGC loop and causes an AC signal to appear at the detector output. Signal is amplified, filtered, digitized and
compared with detection parameters.
Whenever signal matches the detection parameters, an alarm is generated. “Sensitivity” is adjusted in the UIST
II software program.
Microwave 330R Receiver is equipped with various alignment and troubleshooting features. Alignment voltage
test point provides a DC voltage proportional to received signal strength that may be measured with an ordinary
VOM. It is usually viewed in the UIST II software program.
A red “Alarm” LED lights whenever an intrusion occurs. A red “Wrong Channel” LED lights whenever
Transmitter and Receiver are set to different modulation channels. A red “Jam” LED lights when a secondary
interfering signal is present. A red “Pulse” LED indicates the application program is running. There are also
LED’s for communications status of the RS422 and RS232 ports.
3.6 Specifications
1.0 Detection Capability
1.1 Range: 100 feet (30.5m) to 800 feet (244m).
1.2
Beam Diameter: 2 feet (.6m) to 22 feet (6.7m) depending upon link distance and “Sensitivity” setting
per Figure 4.
1.3 Target: 77 pound (35kg) human – walking, running, hands and knees crawling or jumping. Prone
crawling or rolling 77 pound (35kg) human or simulated with a 12-inch (30cm) diameter metal
sphere detected at maximum range of 400 feet (122m) with flat terrain.
1.4
Minimum Target Velocity: 0.1ft. /sec. (30mm/sec.)
1.5
Maximum Target Velocity: 50ft. /sec. (15m/sec.).
2.0
Reliability
2.1 Equipment False Alarm Rate: 1/year/unit based upon signal-to-noise ratio at maximum sensitivity
setting.
2.2 Probability of Detection: 0.99% minimum on 77-pound (35kg) human upright or on hands and knees.
2.3
Self Supervision: Alarm on failure (inherent in design, fully self-supervised) and remote test.