Power Supplies
2000 3000 6000
Function Generators
8110 8120 8130 8140 8150
Frequency Counters
1210 1220
Digital Multimeters
1320 1330
Digital Watt Ammeter
1310

 

Topward Frequency Counter 1220Click here for larger image.

Specification for Topward 1220 Frequency Counter
Frequency Range 0.1Hz to 3GHz
Display Digits 8 Digits 0.5" Green LED Displays
FREQUENCY MEASUREMENT
Range (Direct) 0.1Hz to 100MHz
Range (Pre-Scale) 100MHz to 3GHz
Gate Time (Direct) 0.01S, 0.1S, 1S, 10S
Gate Time (Pre-Scale) 0.05S, 0.512S, 5.12S, 51.2S
Resolution (Direct) 100Hz, 10Hz, 1Hz, 0.1Hz
Resolution (Pre-Scale) 10KHz, 1KHz, 100Hz, 10Hz
Accuracy (1 count + Timebase Accuracy + Trigger Error)
INPUT SELECTION
Sensitivity (CH-A) (15mVrms) / 100MHz
Sensitivity (CH-C) -27dBm (10mVrms) / 2.7GHz; -21dBm (20mVrms) / 3GHz
Impedance (CH-A) 1MW
Impedance (CH-C) 50W
Attenuator (CH-A) X1, X20
AC / DC Coupling Only on Channel A
Low Pass Filter 100KHz nominal 3dB point (Channel A Only)
Trigger Level ADJ. Only on Channel A (+2.5VDC to –2.5VDC)
TIMEBASE
Freq. (Direct) 10MHz 10ppm
Freq. (Pre-Scale) 19.53125MHz 2.5ppm
Power Source ACV 115V / 230V, 10%, 60Hz / 50Hz
Dimension 262 (W) x 85 (H) x 260 (D)
Gross Weight 1.6Kg
Accessories ACS-003 BNC to clip X1, Operation manual X1

 

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