时间检定仪，秒表检定仪GDS-50是一新用的时间检定仪，供各级计量部门，工厂，院校及科研单位检定各种秒表、毫秒仪，机械秒表等，性能合检定规程的要求。
时间检定仪，秒表检定仪GDS-50技术指标：
1、 检定电子秒表和机械秒表：
在1－99999秒内可任意置数
准确度±（2＊10－7＊输出时段）秒±0.003秒
2、 检定电子毫秒仪（正负两组输出）
在1－99999秒内可任意置数，小输出100微秒
准确度±（2＊10－7＊输出时段）秒±0.003秒
3、 检定电秒表（适合新规程JJG237-95）
在1－99999秒内可  任意置数
指针式准确度：电同步＜±0.6毫秒
数字式准确度：±（2＊10－7＊输出时段）秒±0.006秒

Introduction

The calibrator is a precision instrument calibrating mechanical swatch, electronic swatch, and 405/407/408/415/417 te pointer electric swatch. The SF2001 swatch calibrator is compliant with the swatch calibration procedure JJG 237-2010 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 swatch (405,407,408,415/417), mechanical swatch and dial quartz electronic swatch. The instrument is fully dially controlled, high reliability,high accuracy, complete functions, convenient operation, and strong anti-interfere
ability.
GDS-50 swatch calibrator and its accessories:
1)GDS-50 swatch 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 swatch and electronic swatch (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 swatch
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 dial electric swatch
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 swatch and dial quartz swatch calibration procedure, electric swatch 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 T technique and large-scale IC, the calibrator is of high reliability, all volume and long service life.