1.2.1: Check the power supply voltage of DC/DC converter A5, A6. It is to be (26.5-27.5)1.2.2: Output voltage of amplifiers 1 4 of blocks of device must be |(8 to)| V and (14.3 to 17.3) V when giving input voltages (1.00 0.01)V and (6.5 0.5)V respectively at IN-URT1-I IN-URT4-I and it is to be measured across (OUT1-URT1 to OUT1-URT4) and (OUT2-URT1 to OUT2-URT4) at 2.5K load.Check the transmission coefficients of the control board must be 0.305 0.318. It is to be verified by giving input voltages 1V, 25Hz signal at D1 D4 and measuring output voltages at OUT CONT URT1- OUT CONT URT41.2.3: Voltage compensation at inputs D1 D4 of device must be minus (13.50 0.27) V In absence of voltages on remaining inputsAt the same time voltages at OUT POS (D1) OUT POS (D2) must be minus (8.24 8.58)V1.2.4: By giving compensating voltage (5.00 0.02)V at inputs G1 G4. Then change in voltages at inputs D1 D4 of device must be |(7.55 0.68)| V.1.2.5: By giving compensating voltage (5.00 0.02)V at inputs In URT1i URT4i, Change in voltages at inputs D1 D4 of device must be |(5.00 0.45)| V.1.2.6: By giving compensating voltage (3.00 0.02) V at input InWX. Then change in voltages at inputs D1, D3 of the device must be (1.60 0.15) V for input D1, minus (1.600.15) V for input D3.1.2.7: By giving compensating voltage (0.4000.005) V at inputs InWX, InWY. Then change in voltages at inputs D1 D4 of device must be |(3.2 0.3)| V.

1.2.8 Check the transmission coefficients of the filters LPF1 LPF4 must be 0.330.15 It is to be verified by giving input voltages 1V, 25Hz signal at G1 G4 and measuring voltages (OUT LPF1-OUTLPF4 )/5Construction and operationThis device is an amplifying converting device with hard ware for commutation (switching) and ranging. The structural block diagram of the device is given on figure 1. The device consists of four identical amplifying converting devices 1, 2, 3, 4, (four blocks 314-42-1 .468729.001), commutation and ranging device (block 314-42-2 .468729.002), two PCB .469135.306, PCB .469135.308, tuning device and two power supply sources .

The controlling angle signals 1, 2, 3, 4 enters from OBC on the inputs of respective device as per the realized algorithm, and signals of angular accelerations , , z through ranging and switching elements of the block314-42-2 .468729.002, signals 1, 2, 3, 4 in the form of DC voltages proportional to the angle of deflection of executing elements of respective , signal Liquid. through the commutator of block 314- 42-2.The indicated signals in the respective are converted into current, entering into the winding of , during this owing to the feed back (signals 1, 2, 3,4), the vane is held in the specified position.

Apart from it, this device also gives the signals of telemetry parameters 1 , 2 , 3 , 4 , 1 , 2 , 3 , 4 , -27 , +27 , , . (block 314-42-2 .468729.002), signals for controlling OBC parameters: . 1 (1), . 2 (2), . 3 (3), . 4 (4) (PCB .469135.306), . .1 (1-1), . .2 (1-2), . .3 (.1-3), . .4 (. 1-4) (PCB .469135.306) and connects the signals i-, - 27- (PCB .469135.308) and i- (block 314-42-2) to the test and measuring instrumentation.

So as to carry out the tuning operations and conducting acceptance tests through the keys 1, 2 of PCB .469135.308, a simulator of vane actuator (signals .1-, .2-, .3-, .4-) is connected, which is an integrator with slope of increase in the output voltage with in the limits from 5.4 to 6.6 s-1.When the command and 10 enter into the device from the block 314- 42-2, the liquidation signal Liquid. (+27 V) appears on the inputs of 2 and 4, and signal faulty OBC appears on the test and check out equipment from the device.

This device is fed from on board network with a DC voltage of 27 V. The supply voltage appears from the sources of electrical power supply 27-0.6.1.4.2 The load bearing structure of the device is the base, made by casting method from the alloy 12 (2), where the assemblies and parts are positioned, which arerequired for positioning and fastening the purchased electronic items, blocks and power supplies, and also all the electrical elements, included into the composition of device. The electronic blocks of device are blocks of throw off type and ends in connectors. Electrical wiring of device is combined and accomplished with the help of a printed circuit board and volumetric wiring.