CR7000 BEAM-RITE Universal CRT Analyzer and Restorer
The CR7000 Beam-Rite is easier and faster to use than any other CRT tester. Pre-configured sockets are provided for the majority of the tubes you test — without changing switch settings to test each gun of a CRT.
Overview
The Sencore CR7000 BEAM-RITE Universal CRT Analyzer and Restorer is designed to quickly and accurately test and restore most types of CRTs. The CR7000's tests analyze the electron gun and provide you with accurate information about the gun's condition. From these tests, you can easily decide if the CRT is capable of normal output, if you should attempt to improve its operation with the CR7000's restore functions, or if the CRT should be replaced. When the CRT electron gun does have a problem, seven levels of cathode restoration provide the safest and most effective cathode recovery methods possible. Progressive restoration steps allow you to use enough restoration to do the job, but not so much as to damage the CRT further, or needlessly shorten its life.Features
Provides tests for all CRTs, including: computer monitors, video displays, televisions, projection TVs, scopes, and special application CRTs. The CR7000 has full dynamic range to test all CRTs – old and new! Newly designed sockets allow easy connection to hard-to-reach CRTs. Accurate and thorough: – Exclusive sliding Good/Bad scale duplicates manufacturer's test for the most accurate test results available
– Exclusive Low Level and High Level tracking tests locate color tracking problems
– Detects all gun element shorts or leakage
Easy-to-use: Simply connect one of the six supplied adapters to test virtually all CRTs without setting and resetting cumbersome setup switches. Tests all three guns of color CRTs, with simultaneous display of test results. All test results are displayed with interpretation-free GOOD/BAD results. The safest and most effective restoration techniques available. Six levels of progressive restoration guarantees the safest possible restoration. The CR7000 provides self-limiting shorts removal function. The CR7000 has three times the restoration range of other testers providing mild current for marginal guns — all the way to the rejuv level for tough jobs.Specifications
| CRT TEST FUNCTIONS: | |
| Shorts Tests | Tests inter-element resistance, result displayed on bar graph |
| G1 Shorts: | 20 Megohm center scale ± 5%, ± 1 segment |
| H-K Shorts: | 2 Megohm center scale ± 5%, ± 1 segment |
| G2 Voltage | |
| Range: | 10-400 Vdc Video 1, Proj, and Scope CRT types |
| 15-600 Vdc Video 2 CRT type | |
| Accuracy: | ± 5% full scale |
| Bias Voltage | (measured "–" with respect to cathode) |
| Range: | |
| Video & Projection: | 20, 36, 52, 68, 84, 100, 115, 132, 148, 164, 184, Vdc |
| Scope: | all bias voltages divided by 10 |
| Accuracy: | |
| Video & Projection: | ± 5%; <0.5% ripple at 117 Vac (or 200 Vac) line voltage |
| Scope: | ± 5%; <0.5% ripple at 117 Vac (or 220 Vac) line voltage |
| ± 200mV at 2 and 3.6 ranges | |
| Cutoff & Lo Tracking Test | Tests ratio of G2 voltages needed to produce cutoff current in all 3 guns of a color CRT or projection system. Cutoff current measured between K and G1. |
| Indication: | Green "Good" LED, red "Bad" LED |
| Good/Bad indication: | "Good" indication if the G2 voltages for all 3 guns are within 1.25:1 when adjusted to place the cathode currents of each gun into the Cutoff Set box. |
| Good/Bad current (Cutoff Box) calibration: | 10-15 µA video; 0.35-0.60 µA scope; 30-50 µA Proj |
| Resolution: | 1 µA video; 0.05 µA Scope; 4 µA Proj |
| Accuracy: | ± 5% G2; current ± 5% ± 1 segment |
| Emission Test: | Measures true beam current reaching G2. |
| Method: | Successively cycle guns to momentary 0 bias with a 25% duty cycle pulse. G2 voltage for each gun set to cutoff current level at normal bias. |
| Display: | Simultaneous bar graph display of all 3 guns in "Simultaneous" Gun Select. |
| Update speed: | Automatically cycles between guns at approximately 25 Hz rate. |
| Test duration: | Testing ceases after 15 seconds, display holds last measurement. Time-out indicated by flashing Tracking LED. |
| Accuracy: | ± 5% ± 1 segment |
| Hi Tracking Test: | Automatically compares emission currents between highest and lowest guns in "Simultaneous" gun test and indicates Good/Bad result with LED. |
| Indication: | Green "Good" LED, red "Bad" LED |
| Good/Bad calibration: | 1.55:1 |
| Accuracy: | ± 5% ± 1 segment |
| Filament Voltage: | |
| Range: | 0-4; 4-8; 8-16 VDC; continuously variable within selected range |
| Display: | Voltages marked along bar graph |
| Accuracy: | ± 5% ± 1 segment at 117 Vac (or 220 Vac) line voltage |
| Resolution: | 0.1 volt 0-4 and 4-8 ranges; 0.2 volt in 8-16 range |
| Current limiting: | 2.25 amps, 25 watts minimum |
| RESTORE FUNCTIONS: | Progressive restore functions apply positive biases and increased filament voltages for cathode super-heating. |
| Reactivate Restore | |
| Filament voltage: | 50% boost, ± 5% |
| Current limit: | 1 mA maximum all CRT types at 117 Vac (or 220 Vac) line voltage |
| Time: | User controlled button, automatic time-out after 30 seconds |
| Display: | 1 mA center scale +5% -15% |
| Low Restore | |
| Filament voltage: | Normal, (no boost) |
| Current limit: | 80 mA maximum all CRT types at 117 Vac (or 220 Vac) line voltage |
| Time: | User controlled, automatic time-out after 2 seconds |
| Display: | 40 mA center scale +5% -15%, 2 mA resolution |
| Normal Restore | |
| Filament voltage: | Normal, (no boost) |
| Current limit: | 80 mA maximum all CRT types at 117 Vac (or 220 Vac) line voltage |
| Time: | 2 automatic cycles of 3 seconds ON and 3 seconds OFF while Restore button is pressed |
| Display: | 80 mA center scale +5% -15%, 4 mA resolution |
| High Restore | |
| Filament voltage: | 50% boost ± 5% |
| Current limit: | 100 mA maximum Video & Projection |
| 80 mA maximum Scope type at 117 Vac (or 220 Vac) line voltage | |
| Time: | 3 automatic cycles of 4 seconds ON and 2 seconds OFF while Restore button is pressed |
| Display: | 100 mA center scale +5% -15%, 5 mA resolution |
| Extended Restore | |
| Filament voltage: | 50% boost ± 5% |
| Current limit: | 100 mA maximum Video & Projection |
| 80 mA maximum Scope at 117 Vac (or 220 Vac) line voltage | |
| Time: | User controlled; automatic tiime-out after 15 seconds |
| Display: | 100 mA center scale +5% -15%, ± 1 sec., 5 mA resolution |
| Remove G1 Short | |
| Method: | Capacitive discharge between G1 and K/G2 occurs after 20 second delay for filaments to cool |
| Applied Voltage: | 400 Vdc |
| Discharge time: | determined by severity of CRT short |
| Rejuv | |
| Method: | Capacitive discharge between G1 and K (positive bias) with normal filament voltage |
| Applied Voltage: | 400 Vdc |
| Discharge time: | determined by condition of CRT cathode |
| GENERAL: | |
| Display: | Three, 40 segment LED bar graphs (20 green and 20 red segments) with Filament voltage scale and Cutoff set box markings. |
| Size: | 7" x 12" x 8" (HWD) |
| Weight: | 13 lb. |
| Power: | 105-125 VAC 50/60 Hz, 90 watts maximum |
| Warm Up Time: | 20 minutes |
| phone 1.800.736.2673 | International 1.605.339.0100 |
