Data Sheet

Brochure Part No. 82100-1380 Iss. 3A
Specifications TF930/960 (continued) & PFM3000
Hold
Pressing the Hold key will stop further measurements being made and the current measured
value will remain in the display, with the Hold indicator on, until the Hold key is pressed
again. 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.
Signal Activity Indication
Dual bi-colour LEDs show signal activity and indicate whether a DC coupled signal is above or
below the trigger threshold.
REMOTE CONTROL
Interface: USB (Serial port emulation over USB)
Current Used: < 95mA (<5mA if AC adaptor power is present)
Command Set: Annunciators show input configuration, operating mode,
measurement units and gate time
DISPLAY
No. of Digits: 10 digits
Size of Digits: 12.5mm (0.5”)
Annunciators: Instrument specific. TF830 compatible
POWER REQUIREMENTS
The instrument has fixed internal rechargeable batteries 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
Operating Life: Typically 24 hours per full charge
Low Batt. Indicator: ‘Lo Bat’ shows when approximately 10% of battery life remains
Recharge Time: >4 hours
Adaptor Voltage: 85 to 240V, 50 or 60 Hz
Power Consumption: 5W max at DC input to unit; 15VA max at AC adaptor input (charging)
GENERAL
Operating Range: +5°C to +40°C, 20% to 80% RH
Storage Range: -20°C to +60°C
Environmental: Indoor use at altitudes up to 2000m Pollution Degree 2
Size: 260mm(W) x 88mm(H) x 235mm(D)
Weight: 950 gms (plus 170 gms AC adaptor)
Electrical Safety: Complies with EN61010-1
EMC: Complies with EN61326
Specifications - PFM3000
INPUT SPECIFICATIONS
Input A
Input Impedance: 1MW//20pF (AC coupled)
Frequency Range: <3Hz to >125MHz
Sensitivity: Sinewave - 15mVrms 10Hz-125MHz
Input B
Input Impedance: 50W (AC coupled)
Frequency Range: <80MHz to >3000MHz
Sensitivity: Sinewave - 15mVrms 80MHz-2GHz, 50mVrms to 3GHz
Maximum Input Voltage
Input A and Input B: 30Vdc; 30Vrms 50Hz/60Hz reducing to 1Vrms above 1MHz
Note that the inputs will not be damaged if subjected to an accidental short-term connection to a
50/60Hz line voltage not exceeding 250V rms.
MEASUREMENT FUNCTIONS
Frequency (Range A)
Frequency Range: 3Hz to 125MHz
Resolution: 10
-7
Hz to 100Hz (see Note)
Frequency (Range B)
Frequency Range: 80MHz to >3000MHz
Resolution: 1Hz to 10kHz (see Note)
Period (Range A only)
Period Range: 8ns to 330ms
Resolution: 10
-7
ns to 1us (see Note)
Measurement Time
Selectable as 10s, 1s or 0.1s. (Note that for the 0.1s setting the effective measurement time
is 0.3 seconds).
Resolution
The displayed resolution depends upon the measurement time and the input frequency.
Eight digits (or nine using an overflow indication) are displayed for a 10s measurement time.
Seven or eight digits are displayed for a 1s measurement time, and six or seven digits for 0.1s
depending upon the input frequency. Usable resolution may be further reduced by noise,
particularly at low frequencies.
Accuracy
Measurement accuracy is the sum of the timebase accuracy and measurement resolution plus
one count.
TIMEBASE
Crystal Oscillator Frequency: 10MHz
Initial Oscillator Adjustment Error: ± 2ppm (closed-case adjustable by user)
Oscillator Temperature Coefficient: Typically less than ± 0.3ppm/°C 18°C to 28°C,
±10ppm –20°C to 70°C
Oscillator Ageing Rate: <± 5ppm/year
OPERATING FACILITIES
Press to measure
With the power switch off, pressing any of the function select keys will power the instrument
up in the corresponding function. The instrument will automatically switch off 15 seconds
after the last key press.
Hold
Pressing the Hold key will stop further measurements being made and the current measured
value will remain in the display until the Hold key is pressed again.
Noise filter
The Filter key controls a low pass filter, with a cut-off frequency of about 50kHz, to ensure
more stable readings at low frequencies.
Signal activity indicator
When no input signal is detected the Trig indicator will be off, indicating that no measurement
is possible. The gate time indicator flashes until the first measurement interval is complete.
DISPLAY
No. of Digits: 8.5 digits (188888888)
Size of Digits: 11.5mm (0.45”)
Annunciators: 15 annunciators
POWER REQUIREMENTS
Battery Type: 9V PP3 alkaline
Battery Life: Typically 20 hours
Low Batt. Indicator: ‘Bat’ shows in display when approximately 10% of battery life remains
GENERAL
Operating Range: +5°C to +40°C, 20% to 80% RH
Storage Range: -20°C to +60°C
Environmental: Indoor use at altitudes up to 2000m Pollution Degree 2
Size: 81mm x 178mm x 30mm (W x L x D)
Weight: 190gms excluding battery
Electrical Safety: Complies with EN61010-1
EMC: Complies with EN61326
Thurlby Thandar Instruments Ltd. operates a policy of continuous development and reserves the
right to alter specifications without prior notice.
Designed and built in Europe by:
Thurlby Thandar Instruments Ltd.
Glebe Road, Huntingdon, Cambridgeshire. PE29 7DR United Kingdom
Tel: [phone] Fax: [phone]
Email: [e-mail] Web: www.aimtti.com