Summary of Contents for SILTRONIX FD-1011
- Page 1 OPERATION AND MAINTENANCE SILTRONIX MODEL FD-1011 DIGITAL DIAL A Division of Cubic Corporation October 1976 Reprinted 2006...
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Page 2: Table Of Contents
TABLE OF CONTENTS SECTION I DESCRIPTION SECTION V MAINTENANCE General General Specifications Calibration Disassembly Cover Removal SECTION II INSTALLATION Circuit Board Removal Fixed Installation 5-10 Display Removal Mobile Installation 5-12 Troubleshooting VFO Connection SECTION VI PARTS LISTS SECTION III OPERATION General 17-18 On/Off Switch... -
Page 3: Section I Description
117VAC or 13.8VDC operation. If the companion 1011D is operating from 117VAC power, the power connector for the FD-1011 is plugged into a mating receptacle on the rear panel of the Model 1011D. If the 1011D is operating from 13.8VDC, the FD-1011 is also connected to the 13.8VDC supply through two insulated binding posts on its rear panel. -
Page 4: Section Ii Installation
Model 1011D is turned on, therefore, the FD-1011 power switch may be left on with power being controlled by the Model 1011D. Plug the miniature phone plug that is on the end of the FD-1011 coaxial cable, into the mating miniature phone jack on the rear of the Model 1011D marked ―FD-1011 ACC‖. -
Page 5: Section Iii Operation
ON-OFF switch, which is combined with the VOLUME control on the 1011D, is turned ON. The front panel ON- OFF switch on the FD-1011 may then he left in the ON position at all times. When operated from 13.8VDC, the front panel ON-OFF switch must be actuated to turn the unit on and off. -
Page 6: Section Iv Theory Of Operation
4-1 GENERAL 4-2 This section of the manual describes, in detail, the operation of the amplifiers and logic circuits of the Siltronix FD-1011 Digital Dial. The descriptions are in two parts. The first, supported by the block diagram of Figure 4-1, describes the circuit functionally as a prelude to the more detailed descriptions of the second part which is supported by the logic/schematic diagram of Figure 5-2 and a timing diagram, Figure 4-2. -
Page 7: Timing Signal Generation
VFO frequency ÷5.5 KHz. A8 and A7 were each preset prior to the sampling period, to a count of 5. If the receiver is tuned to 28.000 MHz the input frequency to the FD-1011 will be 22.500 MHz. Since the gate is opened for only 10 milliseconds, the number of input pulses to A15 will be 225,000 which will he divided to 22,500 prior to the input of A10. -
Page 8: Reset
4-18 Reset 4-19 At the end of the 9 millisecond display period, the display is blanked. Counters A9, A10 and A15 are reset by timing signal inverted and counters A7 and A8 are both preset to 5 by completing the sample, display, reset sequence which is then repeated. -
Page 9: Figure 4-1 Block Diagram
Figure 4-1 Block Diagram, Model FD-1011 Figure 4-2 Timing System Waveforms Page 9 Copyright 2006 Robert A. Larson, KC9ICH... -
Page 10: Section V Maintenance
WARNING The FD-1011, when connected to a source of 117VAC contains voltages that are dangerous to life. Remove the plug from the power receptacle before removing the cover. 5-8 Circuit Board Removal 5-9 Remove the two #4 screws at the forward corners of the circuit board that pass through the small brackets and into the threaded standoffs that are swaged into the chassis. - Page 11 CHART I TROUBLESHOOTING GUIDE Symptom Probable Cause / Cure Unit is totally inoperative. Check fuses. Unit operates on 117VAC but not on 13.8VDC. Check fuse and diodes CR1 through CR4. Check for defective fuse, F2, defective transformer Operates on DC. Will not operate on AC. Ti and bridge rectifier diodes CR5 through CR8.
- Page 12 CHART II Unit Inoperative - Display Lighted with 25.500 Check for waveform B at A1-C-6. Go to Chart III See Figure 4-2 Defective C9 or coax cable. Analyze Check for input at base of Q1. and repair. Look for open L1, shorted C10, or Check for input at collector of Q1.
- Page 13 CHART III Timing System Inoperative Check for 2.048 MHz oscillator output at Troubleshoot and repair oscillator. A1-D-8. Check for 128 KHz output at A14-11. Replace A14. Check for 8 KHz output at A13-11. Replace A13. Check for 500 Hz output at A12-11. Replace A12.
- Page 14 CHART III (Continued) From Proceeding Page. Check A1-B-4 for inverted waveform C. Replace A1. Check waveform A at A6-D-11. Replace A6. Check for inverted waveform B at A6-C-8. Replace A6. Check for waveform B at A1-C-6. Replace A6. Timing system operating normally. Page 14 Copyright 2006 Robert A.
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Page 15: Figure 5-1 Component Locations
Figure 5-1 Component Locations R30-34 R2-29 Z3 A3 A8 Z4 A7 C1-7 C12 C19 A6 C11 C8 C7-4 C7-3 C7-2 C7-5 C1-C2 CR5-8 Page 15 Copyright 2006 Robert A. Larson, KC9ICH... -
Page 16: Figure 5-2 Schematic Diagram
Figure 5-2 Schematic Diagram Page 16 Copyright 2006 Robert A. Larson, KC9ICH... -
Page 17: Section Vi Parts Lists
SECTION VI PARTS LISTS 6-1 GENERAL 6-2 The replaceable electrical parts of the FD-1011 listed in Table 6-1. When ordering items not listed in Table 6-1, please furnish a complete description of the item. Table 6-1 Replaceable Parts List CAPACITORS 0.002 mfd., 500V, Disc... - Page 18 Table 6-1 Replaceable Parts List (Continued) RESISTORS R2 — R29 220 Ohms, 1/4 Watt, 5% 045-221 R30 — R34 470 Ohms, 1/4 Watt, 5% 045-471 27K Ohms, 1/4 Watt, 5% 045-273 47 Ohms, 1/4 Watt, 5% 045-470 R37 — R39 1.5K Ohms, 1/4 Watt, 5% 045-152 MISCELLANEOUS...
- Page 19 Liability for damage during shipment lies with the carrier and not with SILTRONIX. Any claims or adjustments for shipping damages must be filed directly with the carrier. THE LIABILITY OF THE COMPANY ON THIS EQUIPMENT IS LIMITED TO THE EXPRESS TERMS OF THE WARRANTY PROVIDED ABOVE.
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