GDS-50秒表檢定儀是一最新用的時(shí)間檢定儀，供各級計(jì)量部門，工廠，院校及科研單位檢定各種秒表、毫秒儀，機(jī)械秒表等，性能符合檢定規(guī)程的要求。
技術(shù)指標(biāo)：
1、檢定電子秒表和機(jī)械秒表：
在1－99999秒內(nèi)可任意置數(shù)
準(zhǔn)確度±（2＊10－7＊輸出時(shí)段）秒±0.003秒
2、檢定電子毫秒儀（正負(fù)兩組輸出）
在1－99999秒內(nèi)可任意置數(shù)，最小輸出100微秒
準(zhǔn)確度±（2＊10－7＊輸出時(shí)段）秒±0.003秒
3、檢定電秒表（適合新規(guī)程JJG237-95）
在1－99999秒內(nèi)可任意置數(shù)
指針式準(zhǔn)確度：電同步＜±0.6毫秒
數(shù)字式準(zhǔn)確度：±（2＊10－7＊輸出時(shí)段）秒±0.006秒

The calibrator is a precision instrument calibrating mechanicalstopwatch, electronic stopwatch, and 405/407/408/415/417 type pointerelectric stopwatch. The SF2001 stopwatch calibrator is compliant with thestopwatch calibration procedure JJG 237-2010 issued by the NationalMetrological Bureau. It could be used at metrological department at alllevels, factory, institutions and all research institutes tocalibrate electric stopwatch (405,407,408,415/417), mechanical stopwatchand digital quartz electronic stopwatch. The instrument is fully digitallycontrolled, high reliability,high accuracy, complete functions, convenientoperation, and strong anti-interfere
ability.
GDS-50 stopwatch calibrator andits accessories:
1)GDS-50 stopwatch calibrator       1 piece
2) Three-core power cord              1 piece
3) Dual banana plug test lead         2pieces
4) BNC-banana test lead                1 piece
5) Soft copy of User’s Guide           1 piece

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 mechanicalstopwatch and electronic stopwatch (T0is inputted calibration period of time)
Input range: T 0 :1s-99999s
Accuracy: better than ±(1×10 -7 ×T 0 +3ms)
1.3 Calibrate electricstopwatch
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 millisecondcounter 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 mechanicalstopwatch and digital quartz stopwatch calibration procedure, electricstopwatch calibration procedure, and electronic millisecond countercalibration 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 ofhigh reliability, small volume and long service life.