Ramsey Electronics SG560 Guía de usuario

1 USER GUIDE JANUARY, 2005 V1.20.18 COM3010 SERVICE MONITOR Copyright Ramsey Electronics, Inc. 2005, All rights reserved

10 INTRODUCTION 1.02.02 Rear Panel Connections J. -30dB Output The power meter portion of the COM3010 uses a 100W 30dB attenuator to dissipate power

100 Features: Display: 2 Vacuum Fluorescent graphical displays, 16 x 140 pixels Memories: 100 sequences of 100 registers, plus system memories

101 Receiver: Frequency: 100 kHz to 1.0 GHz Step size: 10 Hz Sensitivity: Less than 2 uV, 1 MHz to 512 MHz; less than 3 uV, 512 MHz to 1 GH

102 Accessories: Battery Pack: BP3010 additional battery pack to extend battery life (1 pack supplied, 3 max) Carrying Case: CC3010 custom Cord

Certification Ramsey Electronics, Inc. certifies that this product meets its published specifications at the time of manufacture, and that the calib

RAMSEY ELECTRONICS, INC. 590 Fishers Station Drive Victor, NY 14564 (585) 924-4560 www.ramseytest.com Copyright Ramsey Electronics, Inc. 2005, All r

11 INTRODUCTION Allows unit to be placed upright and rest on the rear panel. R. Battery Input Jacks Receptacles for connecting battery packs. These c

12 INTRODUCTION 1.02.03 Field Selection and Entry With one exception the GENERATE and RECEIVE displays are laid out in the same four quad-rant forma

13 2.00 BASIC OPERATION

14 BASIC OPERATION 2.01 Generating a Frequency The Frequency Range of the Generator is 100 kHz to 1 GHz in 1 Hz steps. To enter a new generator fre

15 BASIC OPERATION 2.03 Setting Generator Level RF Level can be entered in either the dBm or Volts scale. The Range is 0 dBm (223 mV) to -140 dBm

16 BASIC OPERATION 2.05 Muting the Generator To mute the generator at any time, press SHIFT then MHz/-dBm or end with any scal-ing key. This sets t

17 BASIC OPERATION 2.06 Modulating the Carrier The carrier frequency can be modulated with either amplitude modulation (AM) or frequency modulation

18 BASIC OPERATION 2.06 Modulating the Carrier (Continued) To generate AM tones press the AM key; the FMi icon will be replaced with AM and % modula

19 BASIC OPERATION 2.06.02 Generating Using External MOD IN The external modulation mode allows modulation from an external source via the MOD IN jac

2 TABLE OF CONTENTS 1.00 Introduction ...

20 BASIC OPERATION 2.06.03 Generating CTS To generate a CTS tone, press CTS. Current parameters are now shown on the display. To enter a new CTS to

21 BASIC OPERATION 2.06.04 Generating DCS To activate DCS, press The LED will light indicating it is on. The DCS code field is now active as in

22 2.06.05 Modulation Steps You may enter a STEP/Increment value for FM deviation or AM modulation in any of the modulation modes. This entry will a

23 BASIC OPERATION 2.06.06 Generating Two-Tone Paging Signals The COM3010 can also generate two tone sequential paging signals. Because there are t

24 BASIC OPERATION 2.06.06 Generating Two-Tone Paging Signals (Continued) You wish to generate a typical two-tone, tone only paging signal. Tone one

25 BASIC OPERATION 2.07 Receiving a Frequency Setting the receive frequency is performed in a similar manner to setting the generator. To receive a

26 BASIC OPERATION 2.09 Using the Frequency Counters Your COM3010 contains three different RF frequency counters. Each frequency counter has two gate

27 BASIC OPERATION 2.10 Using the Frequency Meters The frequency meters are selected by pressing METER SELECT multiple times. There are me-ters uniqu

28 BASIC OPERATION Any of the meters can be zoomed by pressing Common Meter Displays Description 2.10.06 The frequency error bargraph allows visua

29 BASIC OPERATION 2.11 Using the Level Meters Level meters in the COM3010 are accessed by pressing SHIFT, METER SELECT multiple times to cycle throu

3 TABLE OF CONTENTS 3.00 Typical Test Procedures... 32

30 BASIC OPERATION 2.12 Zooming the Frequency Meters Each Frequency meter has a corresponding display in the Zoom Meter Mode. The only excep-tion is

31 BASIC OPERATION 2.12 Zooming the Frequency Meters (Continued) Example of the text version of the frequency error meter. It gives quick, accurate

32 Your Notes:

33 3.00 TYPICAL TEST PROCEDURES

34 TYPICAL TEST PROCEDURES 3.00 Typical Test Procedures This section outlines typical measurements that can be made with the COM3010. These test pro

35 TYPICAL TEST PROCEDURES 3.10 Transmitter Tests 3.10.01 Transmitter Power, Frequency, and Modulation Measurement This procedure allows the techn

36 TYPICAL TEST PROCEDURES Frequency Error Measurement 7. The COM3010 will also display the Counted Frequency (Lower left field) and The Frequency Er

37 TYPICAL TEST PROCEDURES 3.10.02 Power Measurements As with many power meters, the frequency to be measured must be specified for accurate power m

38 TYPICAL TEST PROCEDURES Your Notes: 3.10.02 Power Measurements (Continued) 6. Key the radio into the COM3010; the frequency c

39 TYPICAL TEST PROCEDURES 3.10.03 Frequency Counter Off-Air This test allows the user to count the frequency of a transmitter off-air. This is espe

4 TABLE OF CONTENTS 6.50.07 Various Mode Options... 92 7.00 Appendix AP

40 TYPICAL TEST PROCEDURES 3.10.05 CTS Tone Frequency and Deviation Measurement The COM3010 can accurately measure the frequency and deviation leve

41 TYPICAL TEST PROCEDURES 3.20 Receiver Tests 3.20.01 Receiver Sensitivity and Centering Frequency This procedure will give the technician a gene

42 TYPICAL TEST PROCEDURES 3.20.02 SINAD Measurements This test allows the user to accurately measure the sensitivity of a receiver with a built-in

43 TYPICAL TEST PROCEDURES 3.20.02 SINAD Measurements (Continued) 9. The icon displayed on the RECEIVE screen indicates the audio level from the rec

44 TYPICAL TEST PROCEDURES 3.20.03 Opening Receiver Squelch Using CTS The following procedure allows the technician to open a receiver’s CTS encode

45 TYPICAL TEST PROCEDURES 3.02.04 Opening Receiver Squelch Using DCS Opening a receivers DCS encoded squelch can be achieved by using the followin

46 TYPICAL TEST PROCEDURES 3.20.05 Two-Tone Paging This function allows the COM3010 user to open the squelch of a receiver using the Two-Tone Pagi

47 TYPICAL TEST PROCEDURES 3.20.06 Sending External Modulation The COM3010 has several AGC modes available for different signaling methods. The MOD

48 TYPICAL TEST PROCEDURES Tone (sine wave symbol) Tone AGC was designed for continuous tones. Once the AGC has set the gain the AGC circuit will ve

49 TYPICAL TEST PROCEDURES Digital (square wave symbol) Digital AGC helps to get the desired deviation, and it is DC biased. This means that for an

5 1.00 INTRODUCTION

50 TYPICAL TEST PROCEDURES 3.20.07 Testing Repeater Receiver Desensitization Repeaters operate commonly in 2 bands usually at UHF 450 – 470 MHz and

51 TYPICAL TEST PROCEDURES STEP-1 CALIBRATING AN ISOLATION TEE (ISO-T) 1. You must calibrate the Iso-T to 40dB first in order to insure sufficient

52 TYPICAL TEST PROCEDURES 12. While keyed adjust the generator output as necessary to achieve 12 db SINAD. 13. Subtract the transmitter turned off

53 TYPICAL TEST PROCEDURES 3.20.08 Tuning a duplexer The three types of duplexers commonly used in VHF, UHF and 800 MHz communication systems are:

54 TYPICAL TEST PROCEDURES Set up the COM 3010 to generate and monitor the same frequency. The COM 3010 can be linked for either the transmitter o

55 TYPICAL TEST PROCEDURES STEP-2 TUNING THE TRANSMITTER SIDE OF THE DUPLEXER (TX PASS) 1. The transmit side of the duplexer is tuned to reject noi

56 TYPICAL TEST PROCEDURES STEP-3 INSERTION LOSS FINAL TEST 1. Leave the RF OUT cable connected to the duplexer antenna port. You can final test th

57 4.00 ADVANCED FEATURES

58 ADVANCED FEATURES 4.10 Memories The time will probably come when you will want to store settings for repetitive testing of equipment. The COM301

59 ADVANCED FEATURES Memories (Continued) Recalling Registers 1. Press 2. Enter the two digit number of the sequence you desire. Example: 02 3.

6 INTRODUCTION 1.01 Opening the Box 1.01.01 Checking Contents Included with the COM3010 Service Monitor: 1 AC Power cord 1 Pretested 3 foot

60 ADVANCED FEATURES Your Notes: Memories (Continued) Deleting Entire Sequences 1. Press 2. Enter Sequence Number. Example: Sequenc

61 ADVANCED FEATURES 4.20 Smart Link Smart link allows the Receiver and Generator to be linked together. If the Generator and Re-ceiver are on the s

62 ADVANCED FEATURES 4.30 Scanner The scanner function is used to monitor known frequencies for proper operation. The scanner function will allow sw

63 ADVANCED FEATURES 4.30 Scanner (Continued) 11. Press 12. Enter sequence number 13. Press and the information is stored in the “02” r

64 ADVANCED FEATURES 4.40 Sweep Generator The sweep generator is used for testing frequency response of filters, flatness of cables, and similar test

65 ADVANCED FEATURES 4.40 Sweep Generator (Continued) The START field is accessed with the METER SELECT key. The EXIT field is accessed with the @C

66 ADVANCED FEATURES 4.50 User Options: The user options for the COM3010 are available by pressing SHIFT, 6. This brings you to the Main Options Me

67 ADVANCED FEATURES General Options: These are accessed by pressing SHIFT, 6, then the GENERATE key. On the GENERATE screen: The Buzzer is toggle

68 ADVANCED FEATURES General Options (Continued) On the RECEIVE screen: The Dim function allows the user to use the UP/DOWN arrows to select the di

69 ADVANCED FEATURES Clear Memories: Clear Memories is an option that allows you to clear all registers and sequences including the special 99.99 reg

7 INTRODUCTION Adding Batteries All three batteries are internally connected in parallel. If you are adding another battery pack to an existing unit,

70 Your Notes:

71 5.00 USER CALIBRATIONS

72 USER CALIBRATIONS 5.00 USER CALIBRATIONS Several features of the COM3010 can be calibrated by the user: The RSSI Meter, the Master Time Base, an

73 USER CALIBRATIONS 5.20 Calibrate the Master Time Base The COM3010’s Master Time Base is a voltage controlled TCXO with an accuracy of better than

74 USER CALIBRATIONS 5.20 Calibrate the Master Time Base (Continued) 1. Connect an accurate reference frequency source to the COM3010’s RECEIVE IN

75 USER CALIBRATIONS 5.30 Calibrate the Modulation Meter Occasionally the quadrature detector of the COM3010 may need alignment to center the modula

76 Your Notes:

77 6.00 DETAILED INFORMATION

78 6.10 Digital Modulation on the COM3010 When connecting the COM3010 an external broad-band modulation analyzer, the analyzer will typically see a

79 DETAILED INFORMATION 6.20 Advanced Power Meter Information The COM3010 power meter is a voltage mode power meter. The COM3010 power meter is no

8 INTRODUCTION 1.02 Overview 1.02.01 Front Panel Inputs, Outputs, and Controls A. RECEIVE IN Jack The RECEIVE IN jack is used to receive signals u

80 DETAILED INFORMATION 6.30 30 dB Rear Panel Attenuator Output. The 30dB attenuator output on the back of the COM3010 can be used for a variety of

81 DETAILED INFORMATION 6.40 Advanced SINAD Information What is SINAD? SINAD is a parameter which provides a convenient measurement of the quality

82 DETAILED INFORMATION bring up any incoming audio level used during test to a point that the sampling circuit can use it to full advantage and best

83 DETAILED INFORMATION 6.50 RS232 Communications The serial remote control function of the COM3010 provides all the same operations that can be acc

84 DETAILED INFORMATION 3. To enter the Options Screen. 4. Selects Serial Options. 5. Use the buttons to select

85 DETAILED INFORMATION again. Other terminal software should not exhibit this problem. Testing with some legitimate commands: Enter “SYS OPEN 555”

86 DETAILED INFORMATION Major Command Sub-Command Format Low High Returns Description System Commands SYS OPN/OPEN ### 0 999 OK/BAD Opens se

87 DETAILED INFORMATION Major Sub-Command Format Low High Returns Description Generator Side SET GF ###.######MHz 0.100000MHz 1000.000000MHz O

88 DETAILED INFORMATION Receiver Side SET RF ###.#####MHz 0.100000MHz 1000.00000MHz OK/BAD Set Receiver frequency SET RAM AM Receive mode S

89 DETAILED INFORMATION Major Com-mand Sub-command Format Low High Returns Description Memories MEM GET ##.## 00.00 99.99 OK/BAD Recall Memo

9 INTRODUCTION and tone generation of the COM3010 is desired. This input can be set to a wide range of sig-nal levels as the built-in AGC will change

90 DETAILED INFORMATION 6.50.05 GET Commands Major Command Sub-command Low High Returns Description Bottom Meters GET RFCOUNT 0 1200.000000MH

91 DETAILED INFORMATION Major Command Sub-Command Low High Returns Description Operating Values GET GF 100kHz 1000.000000MHz ####.######MHz Get

92 DETAILED INFORMATION GET RAMFM AM FM AM/FM Get Receiver AM/FM mode GET COUNTERMODE 1 6 # Get Counter Mode (see counter mode lists) GET L

93 DETAILED INFORMATION 6.50.06 Various Meter Mode Options Lower Meter Mode Table Mode # Mode Name Valid in AM Valid in FM 1 Frequency Error

94 DETAILED INFORMATION Sweep Speed Mode Table 1 <10mS 2 10mS 3 25mS 4 50mS 5 100mS 6 250mS 7 500mS 8 1S Sweep Mode Table 1 Decade 2

95 7.00 APPENDIX

96 APPENDIX Button Description Shift Description POWER Turns power on and off. None EXT Toggles external modulation mode and selects deviati

97 APPENDIX Button Description Shift Description 8 Enters an “8” SINAD1K Macro for setting up SINAD test-ing. 9 Enters a “9” SINAD400 Macro

98 APPENDIX 67.0 79.7 156.7 179.9 210.7 241.8 71.9 82.5 162.2 186.2 218.1 250.3 74.4 85.4 167.9 192.8 225.7 77.0 88.5 173.8 203.5 233.6 Standa

99 APPENDIX Option Name: Choices Default Description Buzzer ON / OFF ON Turns all buzzer sounds on or off. Cable Comp ON / OFF OFF If on, adds