Motorola D102O manuales

Motorola D102O Instrucciones de operaciones (227 paginas)

Marca: Motorola | Categoria: Teléfonos | Tamaño: 8.34 MB |

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TM 9-6625-2467-15

1

HIGH VOLTAGE

2

Fig. 1-1. The Type 491

4

Spectrum Analyzer

4

SECTION 1

5

CHARACTERISTICS

5

ENVIRONMENTAL

7

Characteristic

8

15,000 feet maximum

8

SECTION 2

9

OPERATING INSTRUCTIONS

9

Spectrum Analyzer Terms

10

≥13 dB dynamic range

13

FIRST TIME OPERATION

14

GENERAL OPERATING INFORMATION

15

Light Filters

15

Mixer Peaking

18

Dispersion

18

Resolution

18

3. DISPERSION-BAL Adjustment

19

4. DISPERSION-CAL Adjustment

19

DISPERSION 1 MHz/div

20

Triggering the Sweep

21

RF Center Frequency Tuning

22

Phase Lock Operation

22

Recorder Out Connector

25

Control Setup Chart

25

SPECTRUM ANALYZER DISPLAYS

25

is the frequency

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Displayed Signals

27

APPLICATIONS

28

Frequency Measurements

29

Frequency Stability

30

Amplitude Modulation

30

Frequency Modulated Spectrum

31

SECTION 3

33

CIRCUIT DESCRIPTION

33

Phase Lock Circuit

35

Sweeper Circuit

37

IF Attenuator

40

Narrow Band IF Amplifier

40

Variable Resolution Amplifier

43

Horizontal Amplifier

44

CRT and Blanking Circuit

45

Low Voltage Power Supply

46

MAINTENANCE

49

SECTION 4

49

Cathode-Ray Tube Replacement

56

Oscillator Tube Replacement

61

Component Replacement

62

TROUBLESHOOTING

66

In-Circuit Diode Checks

67

SECTION 5

75

PERFORMANCE CHECK

75

7. Check External Triggering

77

8. Check Line Triggering

77

9. Check Sweep Timing

77

TABLE 5-1

78

TABLE 5-2

80

Selections

80

(≥4 mV/div)

83

TABLE 5-5

84

TABLE 5-6

84

Internal Sources

87

SECTION 6

89

CALIBRATION

89

Ω. Suggested equipment:

92

CALIBRATION RECORD AND INDEX

93

Preliminary Procedure

95

Steps 1 through 6

96

1. Adjust

96

- 10 volt supply

96

Supplies

97

4. Adjust Intensity Range

98

Ripple Amplitude

98

+150 V 145.5 to 154.5 V

99

Test Oscilloscope

101

Type 491

102

10. Check External Triggering

103

10× test

104

12. Adjust Sweep Length

105

1× probe

107

Linearity

108

TABLE 6-4

110

INT REF FREQ

111

Ω termination or attenu

112

10× probe to

113

Adjust kHz/DIV Dispersion

114

Positions

115

RF CENTER FREQ

117

2× Attenuator (6 dB), a

121

10× Attenuator (20 dB)

121

CW. The intensified

122

(≤200 Hz)

123

10 MHz/div

126

TABLE 6-9

131

BAND A LOCAL OSCILLATOR

134

CALIBRATION PROCEDURE

134

BAND B LOCAL OSCILLATOR

135

Calibration Procedure

135

BAND C OSCILLATOR CALIBRATION

136

PARTS LIST ABBREVIATIONS

139

SPECIAL NOTES AND SYMBOLS

140

SECTION 7

141

ELECTRICAL PARTS LIST

141

Capacitors

143

*152-0325.00

148

*152.0325-00

148

Inductors

151

*151~192~

153

Resistors

155

(contj

155

Description

155

Redstore

157

FIGURE AND INDEX NUMBERS

167

INDENTATION SYSTEM

167

ABBREVIATIONS AND SYMBOLS

167

(Located

168

SECTION 8

169

MECHANICAL PARTS LIST

169

O-ioio(i

170

FIG. 2 REAR

173

FIG. 2 REAR (cont)

175

Figure -1

189

Figure -2

189

APPENDIX A

191

BASIC ISSUE ITEMS LIST

191

SECTION II

195

SECTION 9. DIAGRAMS

201

ACCESSORIES

201

FIG. 4 POWER CHASSIS

220

FIG. 6 CRT SHIELD ASSEMBLY

222

FIG. 8 491

224

STANDARD ACCESSORIES

224

PIN: 028017-000

226

This fine document

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