一、概述

GDS-5B 型秒表檢定儀是一種多功能，綜合性的時(shí)間檢定自動(dòng)測(cè)試裝置，它能對(duì)機(jī)械秒表、電子秒表進(jìn)行進(jìn)行檢定。本儀器采用高穩(wěn)定度石英晶體振蕩器作為時(shí)間基準(zhǔn)，用AVR 單片機(jī)和TTL 集成電路為主要元件，大屏LCD顯示，旋轉(zhuǎn)編碼開關(guān)操作，滿足JJG《秒表檢定規(guī)程》的要求，是一種較理想和實(shí)用的秒表檢定儀。

二、技術(shù)指標(biāo)

1. 測(cè)量范圍

1ms.9s

2. 測(cè)量誤差

秒表：± 3ms

3. 晶體振蕩器

準(zhǔn)確度：±5×10-7/日

三、工作條件

環(huán)境溫度：0~40℃ 相對(duì)濕度：<80%

Introduction

The calibrator is a precision instrument calibrating mechanical stopwatch, electronic stopwatch, and 7 type pointer electric stopwatch. The SF2001 stopwatch calibrator is compliant with the stopwatch calibration procedure JJG issued by the National Metrological Bureau. It could be used at metrological department at all levels, factory, institutions and all research institutes to calibrate electric stopwatch (7), mechanical stopwatch and digital quartz electronic stopwatch. The instrument is fully digitally controlled, high reliability,high accuracy, complete functions, convenient operation, and strong anti-interfere
ability.
SF2001 stopwatch calibrator and its accessories:
1)SF2001 stopwatch calibrator       1 piece
2) Three-core power cord               1 piece
3) Dual banana plug test lead         2 pieces
4) BNC-banana test lead                 1 piece
5) Soft copy of User’s Guide            1 piece

Main Parameter

1.1 Crystal Oscillator
Nominal frequency: 5MHz
Daily aging rate: ≤5×10 -9 /day
Second stability: ≤5×10 -10 /s
Accuracy: ≤1×10 -7
Warming-up time: over 2 hours
1.2 Calibrate mechanical stopwatch and electronic stopwatch (T0 is inputted calibration period of time)
Input range: T 0 :1s-99999s
Accuracy: better than ±(1×10 -7 ×T 0 +3ms)
1.3 Calibrate electric stopwatch
Pointer:
Input range:
Continuous: T 0 :0.1s-99999s
Trigger state: T 0 :1s-99999s
Pause state: T 0 :0.1s-99999s
Accuracy: better than ±(commercial power frequency accuracy×T 0 +0.6ms)
1.4 Calibrate millisecond counter and digital electric stopwatch
Input range: T 0 :1×10 2 µs-1×10 9 µs
Accuracy: better than ±(1×10 -7 ×T 0 +3µs)
The SF2001 calibrator is fully compliant with the mechanical stopwatch and digital quartz stopwatch calibration procedure, electric stopwatch calibration procedure, and electronic millisecond counter calibration procedure, issued by the National Metrological Bureau.

2.1 Working conditions
Voltage: 220(1±10%)V;
Frequency: 50(1±5%)Hz;
Power consumption: <60VA;
Temperature : 0~40℃;
Humidity: <80%
2.2 Mechanical characteristics
Dimension: 329mm×283mm×155mm Weight: 3.7kg
2.3 Operation characteristics: Input with keys, menu display
2.4 Display mode: LCD display,English menu
2.5 Technique: With SMT technique and large-scale IC, the calibrator is of high reliability, small volume and long service life.