TF930 - Measuring equipment Aim TTi - Free user manual and instructions

USER MANUAL TF930 Aim TTi

Aim T T i

AIM & THURLBY THANDAR INSTRUMENTS

TF930

3GHz Universal Counter

INSTRUCTIONS EN FRANCAIS

Aim-TTi

Table of Contents

Specification 2

Sécurité 5

Connexions 6

Input Specifications

Input A

Configurable options

Input coupling: AC or DC

Input impedance: 1MΩ or 50Ω

Attenuation: 1:1 or 5:1

Active edge: Rising or falling, or width high or low

Low pass filter: Filter In (\~50kHz cut-off) or Out

Trigger threshold: Variable threshold for both DC and AC coupling

Input Impedance: 1MΩ//25pF (DC or AC coupled)

or 50Ω nominal (AC coupled only).

Frequency Range: < 0.001Hz to >125MHz (1MΩ, DC coupled).

< 30Hz to >125MHz (1MΩ, AC coupled).

< 500kHz to > 125MHz (50Ω, AC coupled).

Trigger Threshold:

DC coupled: 0 to 2V (1:1 attenuation) or 0 to 10V (5:1 attenuation).

AC coupled: Average ± 50mV (1:1 attenuation) or ± 250mV (5:1 attenuation).

Input Signal Range:

1MΩ, DC coupled: 0 to 3.3V max (1:1 attenuation) or 1 to 12V max (5:1 attenuation).

1MΩ, AC coupled: 1Vrms or 3Vpp max (1:1 attenuation) or 4Vrms or 12Vpp max (5:1 attenuation).

50Ω, AC coupled: 1Vrms above 300kHz.

Sensitivity: Sinewave - 15mVrms 30Hz to 100MHz, 25mV to 125MHz at optimum threshold adjustment.

Input B

Input Impedance: 50Ω nominal (AC coupled).

Frequency Range: < 80MHz to >3GHz.

Sensitivity: Sinewave - 12mV rms 80MHz to 2GHz,

25mVrms to 2.5GHz, 50mVrms to 3GHz.

Input Signal range: < 0dBm recommended, +13dBm (1Vrms) maximum.

External Reference Input

Input Impedance: >100kΩ, AC coupled.

Frequency: 10MHz.

Signal Level: TTL, 3V_pp to 5V_pp CMOS or 1 to 2Vrms sinewave.

Maximum Input Voltage

Inputs A and B and

External Reference:

30VDC; 30Vrms 50/60Hz with respect to earth ground

Note that the inputs will not be damaged if subjected to an accidental short-term connection to a 50/60Hz line voltage not exceeding 250Vrms, or 250V DC.

Timebase

Measurement Clock: 50MHz.

Internal Reference oscillator: 10MHz TCXO with electronic calibration adjustment.

Oscillator Temperature Stability: Better than ± 1ppm over rated temperature range.

Initial Oscillator Adjustment Error: <±0.2ppm at 21^ .

Oscillator Ageing Rate: < ± 1ppm first year.

Calibration adjustment range: > ± 8ppm .

Measurement Functions

Frequency (Input A or Input B)

A Input Frequency Range: < 0.001Hz (DC coupled) to >125MHz

B input Frequency Range: 80MHz to >3000MHz.

Resolution: up to 10 digits (see below) or 0.001Hz

Period (Input A or Input B)

A Input Period Range: 8ns to 1000s (DC coupled)

B input Period Range: 333ps to 12.5ns

Resolution: up to 10 digits (see below)

Pulse Width Modes (Input A only)

Functions: Width high, width low, ratio H:L (high time to low time) and duty cycle.

Pulse Width Range: 40ns to 1000s

Averaging: Automatic within measurement time selected, up to 50 pulses.

Resolution: 20ns for one pulse; up to 1ns or 10 digits with multiple pulse averaging. 0.01% for Ratio H:L and Duty Cycle.

Total Count (Input A only)

Count range: 1 to 9 999 999 999

Minimum pulse width: 8ns

Frequency Ratio B:A

Resolution: Equal to the resolution of the two frequency measurements. If the ratio exceeds ten digits, six digits and the exponent are displayed.

Measurement Time

Selectable as 100s, 10s, 1s or 0.3s. The instrument displays the average value of the input signal over the measurement time selected, updated every 2s, 1s, 0.5s or 0.3s respectively. The hardware captures the count values and continues measuring without any dead time.

Resolution

The displayed resolution depends upon measurement time and input frequency. The basic resolution of period is 8 digits for every 2 seconds of measurement time. Frequency resolution is the reciprocal of period resolution. Usable resolution can be reduced by noise at low frequencies.

Accuracy

Measurement accuracy is timebase accuracy + measurement resolution + 2 counts.

Operating Facilities

Noise Filter

The Filter key controls a low pass filter, with a cut-off frequency of about 50kHz, to assist in obtaining stable readings at low frequencies.

Hold

Pressing the Hold key will hold the current measured value in the display, with the Hold indicator on, until the Hold key is pressed again. The measurement continues in the background when Hold is on. A long press on the Hold key clears old data and restarts the measurement.

Intelligent Power Switching

The unit automatically selects the best available power source of AC adaptor, USB or battery. Intelligent switching avoids discharging the battery overnight when operated from externally switched AC power.

A press-to-measure facility allows a quick measurement to be made by pressing a function select key which will power the instrument up in the corresponding function. The instrument will automatically switch off 15 seconds after the last key-press.

Remote Control

All capabilities can be controlled remotely and measurements read through a USB port. The instrument can be powered (but the battery cannot be charged) by the USB host.

Interface: Serial port emulation over USB.

Current consumption: < 95mA (<5mA if AC adaptor power is present)

Command set: Instrument specific. TF830 compatible.

Power Requirements

The instrument has fixed internal rechargeable piles and is supplied with a universal voltage external mains adaptor with interchangeable UK, Euro, Australian and US power connectors.

Battery Type: Three 2500mAh NiMH cells.

Battery Operating Life: Typically 24 hours

Low Battery Indicator: 'Lo Bat' shows in display when approximately 10% of battery life remains.

Recharge Time: < 4 hours

Adaptor Supply range: 85 to 240V, 50 or 60 Hz,

Power consumption: 5W max at DC input to unit; 15VA max at AC adaptor input (charging).

General

Display: 10 digit LCD, 12.5mm high (0.5"). Annunciators show input configuration, operating mode, measurement units and gate time.

Operating Range: +5°C to +40°C, 20% to 80% RH

Storage Range: -20^ to +60^

Environmental: Indoor use at altitudes up to 2000m, Pollution Degree 2

Size: 260mm(W) × 88mm(H) × 235mm(D)

Weight: 950 gms (plus 170 gms AC adaptor)

Safety & EMC: Complies with EN60950-1 & EN61326-1. For details, request the EU Declaration of Conformity for this instrument via http://www.aimtti.com/support(serial no. needed).

Compteur universel

courant continu (c.c.)

Aim T T i

Thurlby Thandar Instruments Ltd.

Glebe Road • Huntingdon • Cambridgeshire • PE29 7DR • England (United Kingdom)

Telephone: [phone] • Fax: [phone]

International web site: www.aimtti.com • UK web site: www.aimtti.co.uk

Email: [e-mail]