TABLE OF CONTENTS A OVERVIEW OF SIGNAL LEVEL METER...2 B FEATURES OF SIGNAL LEVEL METER...2 C PRECAUTIONS...2 D PANEL AND LCD...3 E INSTRUCTIONS OF KEYS...3 1. SINGLE-CHANNEL MEASUREMENT...4 2. SINGLE-FREQUENCY MEASUREMENT...5 3. SLOPE MEASUREMENT (DUAL-CHANNEL ONE-SCREEN DISPLAY)...5 4. CARRIER-TO-NOISE MEASUREMENT...7 5. VOLTAGE MEASUREMENT...7 6. LCD BACKLIGHT FUNCTION...8 7. POWER SUPPLY...8 8. SPECIFICATIONS...9 9. APPENDIXES...11 1
A Overview of Signal Level Meter Signal Level Meter is an instrument used for the construction and maintenance of analog TV / digital TV, and the measurement of TV signal level and power level. It is widely applied in the routine maintenance of the CATV system. Signal Level Meter is compatible to both analog / digital channels, with strong comprehensive performances; it employs high brightness backlight operating modes, with clear LCD screens, dual-channel measurement display, so it is convenient and pragmatic; besides, numeric keypad input allows it easy to operate; is a compact, small light-weight portable signal level measuring instrument, suitable for making tests in various environments. B Features of Signal Level Meter 1. A test instrument applicable for the maintenance of CATV system; 2. Compact, light-weight, easy to carry; 3. With high-capacity lithium battery, so it can work for a long time; 4. With dual-channel measurement display, it is convenient and pragmatic; 5. Able to measure C/N, V/ A, slope and mains voltage. C Precautions 1. The instrument uses 7.4V/800mAh lithium battery, please charge the battery for at least two hours before you use it for the first time. 2. Please charge the battery of this machine using the charger provided by the Company, otherwise, users may thus suffer unnecessary losses. 3. The instrument shall not work in the environment where there is strong electromagnetic field, which will cause inaccurate measurement results. 4. The RF input socket, the maximum input voltage (AC or DC) of the instrument shall be not exceed 100V, otherwise the instrument may be damaged. 5 The instrument has automatic power-off function, if there are no key operations within three minutes, it will be powered off automatically. 2
D Panel and LCD RF input socket LCD Keypad Charger slot E Instructions of keys Single-channel measurement key Single-frequency measurement key 3
Dual-channel one-screen display / slope measurement key Carrier-to-noise measurement key Mains voltage & battery voltage measurement key, backlight ON/OFF The key for increasing number of channels The key for decreasing number of channels Speaker ON/OFF The key for switching channel input and entering decimal point ~ Number keys 1~9 Power ON/OFF The key for switching analog / digital and entering 0 The key for confirming what you have entered (1) Single-channel measurements key, the instrument will enter a single channel measurement mode, the information as follows will appear in the LCD: The moment the left bottom of the screen displays the channel number of current channel, while the right bottom displays current channel of the vision carrier frequency, the left-hand side of the screen shows V / A value of current channel (vision carrier level and aural carrier level difference), while the right-hand side of the screen shows current channel of the vision carrier level. key to shift between digital / analog channels, the instrument will enter the mode of measuring average power level of digital channels, the information as follows will appear in the LCD: 4
The moment the left bottom of the screen shows the channel number of current digital channel, the right bottom of display center frequency of digital channels, the right-hand side of screen shows the average power level of current channel or key to increase or decrease channel number, you can also change the number of channels by directly entering numbers using number keypad. (2) Single-frequency measurement key, the instrument will enter the mode of single frequency measurement, the information as follows will appear in the LCD: The moment, "F--" appears on the right bottom of screen, while aural carrier (or FM) frequency of the channel appears on the right bottom of the screen, and the level of aural carrier appears on the left-hand side of the screen. You can change the frequency values by directly entering numbers using number keypad. This state can be used for TV aural carrier level or FM signal level value. key, turn on (or off) the aural function, which is only turned on in this state, but turned off in any other measurement state. While Aural function is turned on, the sound icon on the screen will blink continuously; however, this icon will disappear if it has been turned off 3. Slope measurements (dual-channel display in one screen) key, the instrument will first enter the dual-channel one-screen measurement mode. 5
The moment the left bottom of the screen displays the channel number of the first channel (high-end), while the right bottom displays the channel number of the second channel (low-end), the left top of the screen shows the vision carrier level of the first channel, while the right top shows the vision carrier level value of the second channel. key to shift between digital / analog channels, the information as follows will appear in LCD: The moment the left top of the screen shows the average power level of the first digital channel, the right top of the screen shows the average power level of the second digital channel. key to shift between channel input of the first channel and the second channel, when switching channels, the "CH" icon of the selected channel will blink for twice indicating current channel is the selected channel. or key to increase or decrease channel number, you can also change the number of channels by directly entering numbers using number keypad. key again, the instrument will enter the slope measurement mode, the information as follows will appear in the LCD: 6
The moment the left bottom of the screen displays the channel number of the first channel (high end) while the right bottom of the screen displays the channel number of the second channel (low end), the left top of the screen shows the vision carrier level value of the first channel, while the right top shows the difference between the vision carrier level of the first channel and the vision carrier level of the second channel, which is also known as slope. key to shift between digital / analog channels, see Figure below: The moment the left top of the screen shows the average power level of the first digital channel, while the right top shows the difference between the average power level of the first channel and the average power level of the second channel key to shift between channel input of the first channel and the second channel, when switching channels, the "CH" icon of the selected channel will blink for twice indicating current channel is the selected channel. or key to increase or decrease channel number, you can also change the number of channels by directly entering numbers using number keypad. Notes: the difference between dual-channel one-screen measurement mode and slope measurement mode is: the measurement values appearing on the left top and right top as well as their units are different, for example, the unit of level is dbuv, while the unit of slope is db. 4. Carrier-to-noise ratio measurement measurement key, the instrument will enter the carrier-to-noise ratio measurement mode, the information as follows will appear in the LCD: 7
The moment the left bottom of the screen displays the channel number of the measured channel, while the right bottom shows the value of the vision carrier frequency of the measured channels, the left-hand side of the screen displays vision carrier level value of the measured channel, the right-hand side of the screen shows the carrier-to-noise ratio value of the measured channel. The instrument supports two measurement methods, i.e.: the way of closing front-end carrier and the way of online measurement: after the instrument enters the carrier-to-noise ratio measurement mode, it will first enter online measurement method, and display the carrier-to-noise measurement value. If the moment you close the front-end carrier, the instrument will automatically enter the way of closing front-end carrier and display carrier-to-noise ratio measured value. or key to increase or decrease channel number, you can also change the number of channels by directly entering numbers using number keypad. Notes: 1. When the carrier level is less than 75dBuV, the carrier-to-noise ratio value displayed will be "Err". 2. When the carrier-to-noise ratio is 50dB, the carrier-to-noise ratio value displayed will be 50dB. 3. When the carrier-to-noise than is 20dB, the carrier-to-noise ratio value displayed will be are Lo. 4. The way of closing front-end carrier is better than the way of online measurement (in which the carrier is not closed), because the latter will produce bigger errors. To make the measurement result more accurate, please choose modulation switch-off measurement method using spectrum analyzer 5 voltage measurements key, the instrument will enter the mains voltage measurement and the battery voltage measurement mode. The information as follows will appear in LCD: 8
The moment shown AC (or DC) appears on the left bottom of the screen, indicating the voltage of the measured mains is AC (or DC). The left-hand side of the screen shows the mains voltage value, while the right-hand side shows the voltage value of internal battery. 6. LCD backlight The LCD backlight is set to be on when the instrument is started.you can turn the LCD backlight on or off following the steps below. 1. First press key to enter voltage measurement mode. 2. First press key again, if the LCD backlight is turned off, the LCD backlight will be turned on; if the LCD backlight is turned on, the LCD backlight will be turned off. Notes: 1. Using LCD backlight will reduce the working hours of the instrument. 2. Do not carry out any other operation after pressing key and before pressing the same key for a second time, otherwise the backlight will not be able to turned on. 7. Power supply The instrument is powered by internal 7.4V/800mAh lithium battery, in the event that the battery is fully charged, it can work continuously for more than six hours (with audio and LCD backlight turned off). When the battery voltage is below 6.7V, the battery icon on the screen will appear as and blink continuously, in order to remind the user of insufficient power volume in the battery. Please charge the instrument using the charger supplied by the company. Notes: 1. When the voltage of internal battery is below 6.5V, the instrument will be powered off automatically. 2. Please charge the instrument using the charger supplied by the company! If you use other chargers, the Company will not be liable for warranty or any damage thus incurred. 8. Specifications Frequency / channel Range of frequency: S110 47MHz ~ 870MHz 9
S110D 5MHz ~ 870MHz Channel: Russia Standard Channels Russia-CATV Russia digital standard channels Russia-CATV Frequency accuracy: ± 50 * 10E-6 (20 ± 5 ) Resolution: 50KHz Measurement bandwidth: 280KHz ± 50KHz Level measurement Measuring range: 30dBuV ~ 120 dbuv Measurement accuracy: ± 2dB (20 ± 5 ) Resolution: 0.5dB Detection method: peak detection Input Impedance: 75Ω (unbalanced, F-type connector) Carrier-to-noise ratio measurement Measuring range: 20dB ~ 50 db Signal input range: 85dBuV Measurement accuracy: ± 3dB (20 ± 5 ) Resolution: 0.5dB Voltage measurement Input range: 1 ~ 100V (AC / DC) Measurement accuracy: ± 2V Resolution: 1V Operating temperature: 0 to 40 Power supply Battery: 7.4V / 800mAH lithium battery Working time:> 6 hours (audio / LCD backlight off) Charging time: 3 hours External power supply: INPUT: 100 ~ 240V ~ 800mA 50 ~ 60Hz OUTPUT: 9V ~ 2000mA Accessories The power of the special charge: HX lithium battery charger 1 pcs RF input connector: F-type 1 pcs Strap: 1 pcs Bag: 1 pcs User s Manual: 1 Others Dimensions: 210mm * 95mm * 48mm Total Weight: 650g Audio output: built-in speaker (single-frequency mode manual start) 10
9. Appendixes Russia Standard Channels(OIRT -CATV) Channel Vision carrier Aural carrier No. frequency frequency 1 1 49.75 56.25 52.5 2 2 59.25 67.75 62 3 3 77.25 83.75 80 4 4 85.25 91.75 88 5 5 93.25 91.75 96 6 101 111.25 117.75 114 7 102 119.25 126.75 122 8 103 127.25 133.25 130 9 104 135.25 141.75 138 10 105 143.25 149.75 146 11 106 151.25 157.75 154 12 107 159.25 165.75 162 13 108 167.25 173.75 170 14 6 175.25 181.75 178 15 7 183.25 189.75 186 16 8 191.25 197.75 194 17 9 199.25 205.75 202 18 10 207.25 213.75 210 19 11 215.25 221.75 218 20 12 223.25 229.75 226 21 111 231.25 237.75 234 22 112 239.25 245.75 242 23 113 247.25 253.75 250 24 114 255.25 261.75 258 25 115 263.25 269.75 266 26 116 271.25 277.75 274 27 117 279.25 285.75 282 28 118 287.25 293.75 290 29 119 295.25 301.75 298 30 120 303.25 309.75 306 31 121 311.25 317.75 314 32 122 319.25 325.75 322 33 123 327.25 333.75 330 34 124 335.25 341.75 338 35 125 343.25 349.75 346 36 126 351.25 357.75 354 37 127 359.25 365.75 362 38 128 367.25 373.75 370 39 129 375.25 381.75 378 Standard channel No. Center frequency 11
40 130 383.25 389.75 386 41 131 391.25 397.75 394 42 132 399.25 405.75 402 43 133 407.25 413.75 410 44 134 415.25 421.75 418 45 135 423.25 429.75 426 46 136 431.25 437.75 434 47 137 439.25 445.75 442 48 138 447.25 453.75 450 49 139 455.25 461.75 458 50 140 463.25 469.75 466 51 21 471.25 477.75 474 52 22 479.25 485.75 482 53 23 487.25 493.75 490 54 24 495.25 501.75 498 55 25 503.25 509.75 506 56 26 511.25 517.75 514 57 27 519.25 525.75 522 58 28 527.25 533.75 530 59 29 535.25 541.75 538 60 30 543.25 549.75 546 61 31 551.25 557.75 554 62 32 559.25 565.75 562 63 33 567.25 573.75 570 64 34 575.25 581.75 578 65 35 583.25 589.75 586 66 36 591.25 597.75 594 67 37 599.25 605.75 602 68 38 607.25 613.75 610 69 39 615.25 621.75 618 70 40 623.25 629.75 626 71 41 631.25 637.75 634 72 42 639.25 645.75 642 73 43 647.25 653.75 650 74 44 655.25 661.75 658 75 45 663.25 669.75 666 76 46 671.25 677.75 674 77 47 679.25 685.75 682 78 48 687.25 693.75 690 79 49 695.25 701.75 698 80 50 703.25 709.75 706 81 51 711.25 717.75 714 82 52 719.25 725.75 722 83 53 727.25 733.75 730 12
84 54 735.25 741.75 738 85 55 743.25 749.75 746 86 56 751.25 757.75 754 87 57 759.25 765.75 762 88 58 767.25 773.75 770 89 59 775.25 781.75 778 90 60 783.25 789.75 786 91 61 791.25 797.75 794 92 62 799.25 805.75 802 93 63 807.25 813.75 810 94 64 815.25 821.75 818 95 65 823.25 829.75 826 96 66 831.25 837.75 834 97 67 839.25 845.75 842 98 68 847.25 853.75 850 99 69 855.25 861.75 858 13