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“IN1–IN4” – additional programmable inputs:
•
Logic signals with the following levels: “0” – not more than 1.2 V,
“1” – within the range of 3–100 V;
•
Impedance of > 50 kOhm.
“LOG” and “GND” – input of log signals in the form of a closing relay contact.
“LOG” contact is connected with source +5 V via 4.7 kOhm resistor.
“LOG+” and “LOG-” is opto-isolated log input.
“CMPSR+” and “CMPSR-” – opto-isolated input of the gyro’s reference voltage.
“CMPS1+” and “CMPS1-”, “CMPS2+” and “CMPS2-”, “CMPS3+” and “CMPS3-” –
opto-isolated inputs of gyro phases.
All the opto-isolated inputs have identical parameters:
•
Input logic levels: “0” – not more than 1.5 V, “1” – not less than 3.5 V in
the absence of a jumper in the relevant channel;
•
“0” – not more than 3 V, “1” – not less than 6 V with a jumper available;
•
Maximum permissible input constant voltage – 200 V, pulse voltage – 400 V;
•
Protection from the reverse voltage of up to 400 V;
•
Input currents – not more than 0.3 mA at the voltage of 3.5 VL:
– Not more than 1 mA at the voltage of 50 V;
– Not more than 4 mA at the voltage of 400 V.
•
Isolation voltage – 1000 V.
Compass inputs can be used for both compasses with stepper output and for
compasses with an output in the form of synchrovoltage within 12–220 V range.
The mode is program selectable.
Minimum lengths for all the signals are set by program controllable filters.
LF-Box Output Signals
“OUT1-OUT4” – programmable logic outputs:
•
Level “0” – not more than 0.5 V, level “1” – switchable, not less than 4 V or not
less than 10 V;
•
Maximum load – 5 mA;
•
Pulse front length – not more than 2 mkS.
Technical Specification
Hardware Components
The Radar Integrator consists of a short (120 mm) PCI standard Radar Processor board
and two external modules: a high-frequency module (HF-box) and a low-frequency
modules (LF-box), connected to the PCI board with cables.
The high-frequency module (HF-box) has two BNC connectors for the input signals,
whilst the external lines are connected to the low-frequency module (LF-box) by
means of screw terminals.
The high-frequency module (HF-box) is connected to the Radar Processor board via
RJ45 connector. The low-frequency module (LF-box) is connected to the Radar
Processor board via DB25 connector.
Technical Specification
Annex F. RS4v2 Computer Based Hardware
345
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