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+ 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
