一、概述
GDS-5B 型秒錶檢定儀是一種多功能，綜合性的時間檢定自動測試裝置，它能對機械秒錶、電子秒錶進行進行檢定。本儀器採用高穩定度石英晶體振盪器作為時間基準，用AVR 單片機和TTL 集成電路為主要元件，大屏LCD顯示，旋轉編碼開關操作，滿足JJG237-2010《秒錶檢定規程》的要求，是一種較理想和實用的秒錶檢定儀。
二、技術指標
1. 測量範圍
1ms------99999.9s
2. 測量誤差
秒錶：± 3ms
3. 晶體振盪器
準確度：±5×10-7/日
三、工作條件
環境溫度：0~40℃ 相對濕度：<80%
FEATURES
Comply with national regulation of calibrating.
Auto time measuring device of multi-function and high synthesis
with time base of crystal oscillator of high stability
With advanced FPGA technique and MCU integration control, quick response.
LED display with clarity interface, easy operation
suitable for metrological service, factory, academy and scientific research institution to calibrate all kinds of timer instruments
Dimension: 255mm×100mm×380mm
Weight: 4.9kg
SPECIFICATIONS
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For mechanical stopwatch and electronic stopwatch calibrating
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Input Range T0
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1s-99999s
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Accuracy
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＜±（1×10-7×T0＋3ms）
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For pointer stopwatch calibrating
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Input Range T0
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Continuous: 0.1s-99999s
Trigger: 1s-99999s
Pause: 0.1s-99999s
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Accuracy
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＜±（Mains frequency accuracy×T0＋0.6ms）
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For millisecond stopwatch and digital stopwatch calibrating
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Input Range T0
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1×102μs ~1×109μs
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Accuracy
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＜±（1×10-7×T0＋3μs）
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Crystal Oscillator
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Nominal Frequency
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5MHz
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Daily Aging Rate
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≤5×10-9/day
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Second Stability
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≤1×10-10/s
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Accuracy
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≤1×10-7
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Warm Up Time
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12 hours
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Connection of the calibrator
