TTI 1908P Dual Measurement Bench Multimeter (5.5 digit; USB interface)

+ DC Voltage:

Range: 100mV; 1000mV; 10V; 100V; 1000V

Accuracy: 0.02% ± 3 digits; 0.02% ± 3 digits; 0.02% ± 3 digits; 0.02% ± 3 digits; 0.02% ± 3 digits

Resolution: 1µV; 10µV; 100µV; 1mV; 10mV  

Input Impedance: 10.11MΩ; 10.11MΩ; 10.0MΩ; 10.1MΩ; 10.11MΩ

Typical Input 10MW//<1000pF

Impedance: 1MW AC attenuator is in parallel with the 10MW DC attenuator.

Maximum Input: 1kV DC or AC peak, any range.

NMR: >60dB at 50/60Hz.

CMR: 1kW unbalanced CMR is >90dB at DC/50Hz/60Hz.

Recommended max.peak AC + DC voltage while measuring DC voltage:

Range (Max. AC): 100mV (1.8V); 1000mV (1.8V); 10V (18V); 100V (180V); 1000V (1000V)

+ AC Voltage (True RMS):

Range: 100mV; Accuracy: 45Hz - 10kHz: 0.2% ± 150 dig; 10kHz - 30kHz: 1.5% ± 200 dig; Resolution: 1µV

Range: 1000mV; Accuracy: 45Hz - 10kHz: 0.2% ± 100 dig; 10kHz - 30kHz: 0.5% ± 100 dig; 30kHz - 50kHz: 2% ± 200 dig; Resolution: 10µV

Range: 10V; Accuracy: 45Hz - 10kHz: 0.2% ± 100 dig; 10kHz - 30kHz: 0.5% ± 100 dig; 30kHz - 50kHz: 2% ± 200 dig; Resolution: 100µV

Range: 100V; Accuracy: 45Hz - 10kHz: 0.2% ± 100 dig; 10kHz - 30kHz: 0.5% ± 100 dig; 30kHz - 50kHz: 2% ± 200 dig; Resolution: 1mV

Range: 750V; Accuracy: 45Hz - 10kHz: 0.2% ± 100 dig; 10kHz - 30kHz: 0.5% ± 100 dig; 30kHz - 50kHz: 2% ± 200 dig; Resolution: 10mV

+ AC + DC Voltage:

Total measurement error will not exceed the sum of the separate AC and DC accuracy specifications plus 10 digits.

+ Resistance:

2-wire or 4-wire measurement

Range: 100W; 1000W; 10kW; 100kW; 1000kW; 10MW

Accuracy: 0.05% ± 8 digits; 0.05% ± 5 digits; 0.05% ± 5 digits; 0.05% ± 5 digits; 0.3% ± 2 digits; 0.3% ± 2 digits

Resolution: 1mW; 10mW; 100mW; 1W; 10W; 100W

Maximum Input: 1000V DC or AC rms, any range.

Max. O/C Voltage: 3.5V

+ DC Current:

Range: 10mA; 100mA; 1000mA; 10A (<5A); 10A (>5A)

Accuracy: 0.05% ± 5 digits; 0.05% ± 5 digits; 0.2% ± 5 digits; 0.2% ± 5 digits; 0.2% ± 10 digits

Resolution: 100nA; 1µA; 10µA; 100µA; 100µA

Maximum Input: mA ranges - 1.6A DC or AC rms, 1000V, fuse protected. 10A range - 10A DC or AC rms, 1000V, fuse protected.

Voltage Burden: 10mA range - <100mV; 100mA, 1A, 10A ranges - <600mV

+ AC Current (True RMS): 

Range: 10mA; 100mA; 1000mA; 10A (<5A); 10A (>5A)

Accuracy (45Hz to 10kHz): 0.35% ± 20 digits; 0.35% ± 20 digits; 0.5% ± 20 digits; 0.5% ± 20 digits; 1% ± 20 digits

Resolution: 100nA; 1µA; 10µA; 100µA; 100µA

Accuracy specifications apply for readings between 10,000 and 120,000 counts.

Maximum crest factor = 3 is typically 0.5%.

Maximum Input: mA ranges - 1.6A DC or AC rms, 1000V, fuse protected. 10A range - 10A DC or AC rms, 1000V, fuse protected.

Voltage Burden: 10mA range - <100mV; 100mA, 1A, 10A ranges - <600mV

+ AC + DC Current:

Total measurement error will not exceed the sum of the separate AC and DC accuracy specifications plus 10 digits.

+ Frequency: 

Range: 100Hz; 1000Hz; 10kHz; 100kHz

Accuracy: 0.01% ± 1 digit; 0.01% ± 1 digit; 0.01% ± 1 digit; 0.01% ± 1 digit

Resolution: 0.01Hz; 0.01Hz; 1Hz; 10Hz

Scale Length: 12,000 counts

Frequency Range: 10Hz to >100kHz

Input sensitivity: Better than 30mVrms (100mV range); better than 10% of range for all other Vac and Iac ranges.

+ Capacitance:

Range: 10nF; 100nF; 1µF; 10µF; 100µF

Accuracy: 2% ± 5 digits; 2% ± 5 digits; 2% ± 5 digits; 2% ± 5 digits; 5% ± 5 digits

Resolution: 10pF; 100pF; 1nF; 10nF; 100nF

Scale Length: 1200 counts

+ Temperature: 

Linearised measurement for PT100 or PT1000 RTD probes, 2-wire or 4-wire measurement, display in oC or oF.

RTD: PT100; PT1000

Range: -50 to 400oC; -50 to 400oC

Accuracy: 0.05% ± 0.5oC; 0.05% ± 0.5oC

Resolution: 0.1oC; 0.1oC

+ Continuity and Diode Test:

Continuity: 100W range selected; audible tone sounds for impedance <10W.

Diode Test: Test current approximately 1mA; displays voltages up to 1.2V.

Max. O/C Voltage: 3.5V

Maximum Input: 1000V DC or AC rms, any range

- EXTERNAL REMOTE TRIGGER (TTL/CMOS)

Connection: Terminal block on rear panel.

Input: Input to the LED of an opto-isolator through 1kW resistor. Apply >+3V to trigger remote input. Max. Voltage 10V.

Output: Opto-isolated open collector output, conducts for 250ms on completion of input trigger. Max. off-state Voltage: 10V. On state sink current 2mA (typical).

- DISPLAY:

Display Type: High contrast backlit transflective LCD. Main display 5½ digits 17mm high, Secondary display 6 digits 10mm high.

Scale Length: 120,000 counts for most measurement parameters

Annunciators: LCD annunciators for all ranges, functions and program modes.

Overrange: Displays OFL if input too large for range.

Overflow: Displays -Or- if calculated result overflows display.

- COMPUTING FUNCTIONS:

Null (Relative) Stores current reading and subtracts it from future readings.

W Null: Additional non-volatile function for nulling test lead resistance.

Hold: Reading is frozen

T-Hold: (Touch & Hold) Reading is frozen when stable.

dB: Displays measurement in dBm relative to 600W or other user-entered impedance.

AC plus DC: The RMS value of the AC plus DC parts of the signal is calculated and displayed.

% Deviation: Displays % deviation from entered reference value.

Ax+b: Linear scaling of results, with offset.

Limits: Reading displayed with HI, LO, or PASS with respect to user-defined high and low limits.

Min/Max: Minimum and maximum reading stored.

Power: Calculates V2/R and displays in Watts with respect to a user-defined impedance.

VA: Calculates and displays Volts x Amps.

Data Logger: Manual or automatic storage of 500 measurements. Storage interval 1s to 9999s or at the measurement sample rate, manually from keyboard, or by external triggering.

- DIGITAL INTERFACES - 1908P:

Full digital remote control facilities are available through the RS232, LAN, USB interfaces.(AC line power is required for RS232, LAN interfaces)

RS232: Standard 9-pin D-connector. Baud rate 9600.

USB: Standard USB 2.0 hardware connection. Host powered.

LAN: Ethernet 100/10base-T hardware connection.

LXI Conformance: 1.4 LXI Core 2011.

Remote Command

Processing Time: Typically <100ms.

- SOFTWARE SUPPLIED: 

IVI Driver: An IVI driver for Windows is supplied.

LV/CVI Driver: Full installation for CVI and LabVIEW instrument drivers.

USB Driver: An installation file is supplied calling a standard Windows* USB driver.

- POWER REQUIREMENTS:

AC Input: 220V-240V or 110-120V AC ±10%, 50/60Hz, by internal adjustment; 20VA max. Installation Category II.

Batteries: Internal rechargeable Nickel Metal Hydride

Battery Life: > 20 hours with the backlight enabled. Battery life can be increased to > 35 hours with the backlight disabled.

- 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.

Safety and EMC: Complies with EN61010-1, EN61010-2-030, EN61010-2-033 & EN61326-1. 

Security: Kensington security slot incorporated.

Size: 250(W) x 97(H) x 295(D)mm in bench-top configuration

213.5(W) x 86.5(H) x 269(D)mm (2U/ ½ - rack) in rack mount format.

Weight: 3.2kg

GPIB interfaces: no, this feature has been discontinued