Universal Counter TTi TF830

Frequency, period, pulse width, frequency ratio and event counter modes
5Hz to 1300MHz range, 0.001mHz resolution
Reciprocal Counting measurement technique gives high resolution at all frequencies
Low power, mains or battery operation
Excellent sensitivity across the frequency range
Optional addressable RS232 interface

Detailed Description

Specification

Functions	Frequency (Range A)	Frequency range	5Hz to 25MHz
		Input socket	A
		Resolution	0.001mHz to 100Hz (see Note 1)
	Frequency (Range B)	Frequency range	20MHz to 1.3GHz
		Input socket	B
		Resolution	1Hz to 10kHz (see Note 1)
	Period	Input socket	A
		Frequency range	5Hz to 25MHz
		Resolution	10^–7ns to 1us (see Note 1)
	Count	Input socket	A
		Counter range	1 to 268435456 (2²⁸), only the least significant 8 digits shown with overflow indication past 99999999 pulses
		Frequency range	1Hz to at least 14MHz
		Minimum pulse width	20ns
	Ratio A/B	Frequency range	A - 5Hz to 25MHz, B - 20MHz to 1.3GHz
	Ratio A/B	Resolution	The answer is displayed with 8 significant digits irrespective of actual input frequencies and measurement time
	Pulse Width	Input socket	A
		Mode	Falling to rising edge or rising to falling edge
		Range	1us to 26s
		Resolution	100ns
		Measurement time	0.1s and 1s ranges determine the inter-measurement time. 10s range will hold until reset
*Note 1* The resolution depends upon the measurement time and input frequency. At least 7 digits are displayed per second of measurement time.
Input Specifications	Input A	Input impedance	1MOhm//25pF
		Frequency range	5Hz to 25MHz
		Sensitivity	Sinewave 15mVrms 10Hz to 20MHz; pulse 40mV pk-pk 0Hz to 14MHz
		Trigger level	Continuously adjustable by front panel control
		Max. permissible input voltage	200Vdc; 250Vrms 50/60Hz reducing to 1Vrms above 1MHz
		Low pass filter	Switchable 50kHz low pass noise filter
		Coupling	AC
	Input B	Input impedance	50 Ohm nominal
		Frequency range	20MHz to 1.3GHz
		Sensitivity	10mVrms 20MHz to 700MHz, <50mVrms to 1.3GHz
		Max. permissible Input voltage	250Vdc; 250Vrms 50/60Hz; 1Vrms 20MHz to 1.3GHz
		Coupling	AC
	External Standard Socket	Frequency	10MHz
		Selection	Automatic detection and change-over
		Sensitivity	TTL/CMOS compatible, AC coupled
		Max. permissible input voltage	5Vrms, 50V dc
Timebase		Oscillator	10MHz Xtal
		Initial adjustment error	<±1ppm at 23°C
		Temperature coefficient	Typically less than ±0.3ppm/°C 18°C to 28°C, ±10ppm –20°C to 70°C
		Ageing rate	<±5ppm/year
RS232 Interface (TF830-RS232 ONLY)			Addressable RS-232 interface, all functions remote-controllable including trigger level and filter. Complies fully with the TTi ARC interface standard.
Power Requirements		Battery type	6 ‘C’ size disposable or rechargeable cells, (Alkaline cells)
		Battery life	Typical figures TF830 - 200 hrs
		AC Input	230 volts ±14% AC nominal or 115 volts ±14% AC nominal.
		Consumption	8VA max.
General		Electrical Safety	Complies with EN61010-1
		EMC	Complies with EN50081-1 and EN50082-1
		Environmental operating range	+5°C to +40°C, 20% to 80% RH
		Environmental storage range	–20°C to +70°C
		Size	257(W) × 224(D) × 88(H) excluding handle and feet
		Weight	1.55kg(excluding batteries)