Table of Contents
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Table of Contents
Summary of Contents for Selcom ST 400 Cayman
- Page 1 NONLINEAR JUNCTION DETECTOR ST 400 (402) ‘CAYMAN’ OPERATING MANUAL English...
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Page 2: Table Of Contents
OPERATING MANUAL CONTENTS 1. Description 1.1. Purpose 1.2. Delivery package 1.3. Main Technical Specifications 1.4. Principles of Operation 1.5. Operation Modes 1.6. Structure 1.6.1. Antenna Module 1.6.2. Main Unit 1.6.3. Telescopic Arm 1.6.4. Controls 2. Use 2.1. Preparation 2.2. Adaptive Mode 2.3. -
Page 3: Description
It also enables one to distinguish between return signals from real semiconductors and other kinds of responses, such as those given by corrosion or metal-oxide- metal structures. 1.2. Delivery package ST 400 Cayman comes in a shockproof case that contains the following. Item Quantity No. in Fig. 1 ST 402 ‘Cayman’... -
Page 4: Main Technical Specifications
OPERATING MANUAL 1.3. Main Technical Specifications Range of radiated frequencies 2–3GHz Max. peak radiated power < 2W Antenna polarisation elliptic Operation modes SEARCH AUDIO ADAPT Sensitivity range in manual mode 40dB (5 values with 8dB increment) Response indication – visual three 16-segment LED gauge bars –... -
Page 5: Operation Modes
ST 402 ‘CAYMAN’ NLJD 1.5. Operation Modes The NLJD ST 402 Cayman has the following modes of operation: Primary operation mode: SEARCH Secondary operation mode: AUDIO Service mode: ADAPT The main operation mode named SEARCH is meant for detecting nonlinear targets and identifying them, based on the response levels as indicated by 16-segment bars. -
Page 6: Antenna Module
OPERATING MANUAL 1.6.1. Antenna module The antenna module comprises a receiver- transmitter unit, a control-display unit, and an aerial, all of which are assembled on a single platform and incorporated in a single body. The antenna is mounted at the end of a telescopic arm by way of a hinge joint that allows adjusting the incline within the vertical plane along the rod’s axis, as shown in Fig. -
Page 7: Main Unit
ST 402 ‘CAYMAN’ NLJD 16-segment led gauge of reflection levels white Power-on led indicator POWER SEARCH mode indicator yellow SEARCH AUDIO mode indicator yellow AUDIO 5-segment tuning bar* yellow TUNING socket for power-and-control cable CONTROL USB port * the TUNING segment bar has two functions: –... -
Page 8: Controls
OPERATING MANUAL A twisted cable goes through the arm, connecting the antenna with the power and control units housed in the main body. Fig. 6 shows the device with the arm retracted, and fully extended. Fig. 6 1.6.4. Controls Three control buttons are at the front of the handle (Fig. 7). The mode-setting button (2, Fig. -
Page 9: Adaptive Mode
ST 402 ‘CAYMAN’ NLJD Fig. 8 Make sure the power switch (12, Fig. 2) is in the leftmost position (off). Connect the power-and- control cable plug (8, Fig. 2) to the socket on antenna module (8, Fig. 4). Switch on the device by turning the knob clockwise;... -
Page 10: Operational Check With Test Dummies
OPERATING MANUAL 2.3. Operational check with test dummies Once ST 402 Cayman has been adapted to the environment, its functioning should be checked with the aid of test dummies that imitate nonlinear materials (1, Fig. 1). For that purpose select an area free of responses from nonlinear elements or reflecting surfaces, and place there the dummy that is marked red. - Page 11 ST 402 ‘CAYMAN’ NLJD Items known to contain semiconductor components (electronic instruments, office and home equipment, communication devices, etc.) are checked by other means. When running checks on enclosing structures, it is important to set a suitable receiver gain. If excessive, it may well cause detection of objects behind the walls, which may be a problem when there is no access into the adjoining spaces.
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Page 12: Listening (Audio Mode)
OPERATING MANUAL 2.5. Listening (AUDIO mode) The AUDIO mode is primarily intended for analysing target responses by listening to the demodulated signal output. This should give the operator ample information to identify the response type. To switch from SEARCH to AUDIO, press . - Page 13 ST 402 ‘CAYMAN’ NLJD Table 3 indication on TUNING bar freq. combination # gauge bar # in SEARCH mode Use buttons to change probing frequency combinations (1 and 3, Fig.7). Table 4 shows typical results of analysing targets with nonlinear properties. Table 4 Type of probed Optimum frequency...
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Page 14: Program Updates
– turn off the device – follow instructions in the README file that comes with the update. WARNING! Once the updating process has started, ST 400 Cayman can only be switched into operation again upon completion of the update installation. -
Page 15: Electric Power Supply
ST 402 ‘CAYMAN’ NLJD 3. POWER SUPPLY ST 402 Cayman is powered by two Li-ion rechargeable batteries (type 18650). 4 batteries are included in the delivery package. The total run time on one battery charge is from 3 to 4 hours, depending on the modes employed;... -
Page 16: Storage And Transportation
OPERATING MANUAL 5. STORAGE AND TRANSPORTATION The device must be stored in heated storage facilities pursuant to GOST V9.003–80 (ГОСТ В9.003–80). The following conditions must be maintained: 1) ambient temperatures from + 0 to 50°С; 2) relative air humidity 80 percent at 30°С; 3) atmospheric pressure from 630 to 820 mmHg;...
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