LEADER DIGITAL COUNTER LDC-822, US $70.00 – Picture 0

LEADER DIGITAL COUNTER LDC-822, US $70.00 – Picture 1

LEADER DIGITAL COUNTER LDC-822, US $70.00 – Picture 2

LEADER DIGITAL COUNTER LDC-822, US $70.00 – Picture 3

LEADER DIGITAL COUNTER LDC-822, US $70.00 – Picture 4

LEADER DIGITAL COUNTER LDC-822, US $70.00 – Picture 5

LEADER DIGITAL COUNTER LDC-822, US $70.00 – Picture 6

LEADER DIGITAL COUNTER LDC-822, US $70.00 – Picture 7

LEADER DIGITAL COUNTER LDC-822, US $70.00 – Picture 8

LEADER DIGITAL COUNTER LDC-822, US $70.00 – Picture 9

LEADER DIGITAL COUNTER LDC-822, US $70.00 – Picture 10

LEADER DIGITAL COUNTER LDC-822, US $70.00 – Picture 11

Leader Digital Counter Ldc-822

US $70.00

Carson, California, United States
Jan 29th

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You are looking at used Leader Electronics Corp portable Digital Counter LDC-822, 1. [Introduction] LDC-822(A) is a digital frequency counter /timer designed to measure the frequency and period of a signal, featuring a wide frequency range 10Hz-80 MHz, a high input sensitivity (20mV) rms, and high resolution to 7 digits. The period function makes the unit outstanding for video tape recorder service applications. This instrument can used for adjustment, test and repair of audio instruments, AM/FM radios, TVs, CB radios, computer clocks, amateur-radios, electronic watches, and musical instrument, etc. The LDC-822(A) is small and portable. A big bright fluorescent display assures easy readability of values. The green display does not induce eye fatigue even after an extended period of viewing. Readout miscounts are reduced by zero-blanking, unit-display (kHz, MHz, and mS) and over range display. The use of LSI and MSI in the internal circuit assures reliable performance and less power consumption. 2. [SPECIFICATIONS AND RATINGS] Frequency Measurements: Range 10Hz – 80MHz Gate time 0.1S, 1S, 10S Resolution 10Hz, 1Hz, 0.1Hz Accuracy +- 1 count, +- time base accuracy Period Measurements: Range 100mS – 1µS Multiplication Factors 10, x100, x1000 Resolution 10µS, 1µS, 0.1µS Accuracy +- count, +- time base accuracy, +- trigger error Input Section: Input sensitivity 0mVrms, 200mVrms, 2Vrms (10Hz – 80MHz) Attenuator 1, 1/10, 1/100 Coupling AC Input impedance approx 1M? Maximum input voltage 0Hz – 400Hz : 100Vrms 400Hz – 100kHz : 20Vrms 100kHz – 80MHz : 5Vrms Time base: Frequency 10MHz (crystal controlled) Accuracy +- 5 x 10 -6 (32°F -104°F) (0°C -40°C) General Specifications: Display digits, 7segment fluorescent display overflow indication, Gate indication and zero blanking Operating temperature range 0°C -40°C (32°F -104°F) Power source 100V, 117V, 200V, 234V +-10% 50Hz – 60Hz (Voltage-change is accomplished by change on tap of transformer) Power consumption Approx. 10VA Dimensions 3” (H) x 8” (W) x 10” (D) Excluding knobs and legs Weight Approx. 5lbs Accessories clip cable with BNC connector 3. PANEL FUNCTIONS 3.1 [Front Panel] Fig. 3-1 shows the front panel of LDC-822A. 1 Power switch: To turn on, depress push-button, to torn off, again depress push-button. 2 INPUT Terminal: BNC Connector 3 SENSITIVITY Selector: 3 push button switches for 20mV, 200mV, 2V respectively 4 Function Switch: A push button switch for changing the measurement mode, used for selecting the measurement functions of PERIOD and FREQ. 5 RESET Switch: By pressing this switch, the counter stops its operation, and during the time that the switch is depressed, the display is continuously shown. When released, the display is cleared to zero. After a delay of approximately 0.1X, if there is an input signal, the counter starts counting. 6 GATE TIME: MULTIPLIER SELECTOR: For frequency measurement, this switch is sued to change GATE TIME; when in the period-measurement mode, it is used to change the multiplier factors. Each range is as follows: GATE TIME: 0.1, 1 and 10 sec. MULTI: x 10, x 100 and x1000 7 Display: It is a 7 digit, 7 segment fluorescent display. In accordance with the measuring range, the decimal point is displayed automatically, and the leading zeros are blanked. 8 GATE indicator: Displays the opened or closed state of the GATE. When GATE is open, indicator is lit. 9 OVERRANGE indicator: Lights when the frequency is over the counting capacity of 7 digits. In the case of over range, push the GATE TIME/MULTIPLIER switch to smaller values until the over range indicator light goes off. 10 Unit indicator: For frequency measurement, the indicator shows “MHz” at 0.1S; and “kHz” at 1S and 10S. “mS” is displayed in the case of period measurements. 11 Handle / Stand combination: The lock of the handle can be released by pressing the mounted part of the handle on both sides with both hands. The handle can then be freely rotated. When the hand is released, it is locked in a position of 60 - 120 - 180 - 240 - 300 or 360 degrees. 3.2 Rear Panel 12 Power cord. 13 Fuse holder (contains 0.3A fuse). 14 Stand legs (LDC-822). There are four legs on the stand for keeping the LDC-822 in the vertical position. The power-cord can be coiled when not in use. 15 Label. 3.3 Diagram of the base 16 Reference frequency adjust trimmer. With a screw driver, trimmer control adjustment of the reference frequency oscillator can be made. For procedure, refer to section 6-Maintenance. 17 Rubber feet. [Instruction manual and others] Instruction manual and AC cord are come with unit. [Conditions that provide the buyer the sale this item] Condition of looks: Great looking and working condition, with Power Code. Condition of testing this item: This unit tested for basic power capability only. No further testing has been done. Condition under which the item is sold: 1. If any questions, please contact us before purchasing. 2. This auction only comes with what is pictured or listed in the description. 3. All parts, accessories, cables, etc. are not included unless pictured or described. 4. The unit has some small signs of wear and normal use. 5. We are not responsible for international customs fees. 6. 7 DAY RIGHT OF RETURN....buyer pays shipping & handling fees. 7. We do not ship to P.O. Boxes or unverified Paypal addresses. 8. Do not assume anything else about the item except what is stated. Caution: We cannot offer technical support on any of our products. All units are sold without manufacture warranty information. The customer is responsible for verifying compatibility for ALL items. 20% restocking fee for any item returned due to compatibility issues ( if returns are offered by seller) . Please note that item pictured may not be 100% representative of what is received. Image provided is sometimes a stock photo provided by the manufacturer so please read above description for further product detail. Payment Methods: * Preferred mode of payment is via PAYPAL. * Payment accepted via PAYPAL. (All local and international charges are to be paid by the buyer) * Upon request we do ship on customers account.

Condition	Used : An item that has been used previously. The item may have some signs of cosmetic wear, but is fully operational and functions as intended. This item may be a floor model or store return that has been used. See the seller’s listing for full details and description of any imperfections.
Seller Notes	“Clean and good work condition.”