175A 41⁄2-Digit Multimeter
DC VOLTS ACCURACY (1 Year)
RANGE RESOLUTION ±(%rdg + counts)
200 mV 10 µV 0.03 + 2
2 V 100 µV 0.03 + 1
20 V 1 mV 0.03 + 1
200 V 10 mV 0.03 + 1
1000 V 100 mV 0.03 + 1
INPUT RESISTANCE: 1MΩ on 200mV, 2V, and 20V ranges. 10mΩon 200V and 1000V
ranges. (>1000MΩ on the 200mV and 2V ranges with all function buttons in the
out position).
NORMAL MODE REJECTION RATIO: >60dB at 50Hz, 60Hz ±0.15%.
MAXIMUM ALLOWABLE INPUT: 1000V DC or peak AC (<10s per minute on 200mV
and 2V ranges; 300V rms continuous).
SETTLING TIME: 1s to within 1 count of final reading on range.
dB MODE (ref: 600Ω): Accuracy: ±(0.02dB + 1 count) above –78dBm.
Resolution: 0.01dB above 5% of range.
TRMS AC VOLTS
RANGE 20Hz–50Hz 50Hz–10kHz 10kHz–20kHz 20kHz–50kHz 50kHz–100kHz
2V–750V 1 + 20 0.5 + 20 1 + 40 2.5 + 75 5 + 200
200 mV 1 + 20 0.5 + 20 1.5 + 40 8 + 75 —
dB MODE (ref: 600Ω): ACCURACY (±dBm)
RANGE INPUT 20Hz–10kHz 10kHz–20kHz 20kHz–50kHz 50kHz–100kHz
2V–750V 200 mV to 750 V 0.2 0.26 0.56 1.2
200 mV 20 mV to 200 mV 0.2 0.3 1 —
Resolution: 0.01dB above 5% of range.
*Above 1800 counts. **Up to 1kHz.
MAXIMUM ALLOWABLE INPUT: 750V rms, 1000V peak (<10 seconds per minute on 200mV range;
300V rms continuous). 10
3dB BANDWIDTH: 300kHz typical.
INPUT IMPEDANCE: 10MΩ paralleled by <75pF on 20V, 200V, and 1000V ranges. 11MΩon 200mV
and 2V ranges. Capacitively coupled.
SETTLING TIME: 2 seconds to within 15 counts of final reading on range.
(–12 to +59.8dBm)
(–32 to –12 dBm)
2 mV to 20 mV 2 3 — —
(–52 to –32 dBm)
1 mV to 2 mV 2** — — —
(–58 to –52 dBm)
7
V·Hz maximum.
DC AMPS MAXIMUM ACCURACY (1 Year)
RANGE RESOLUTION BURDEN ±(%rdg + counts)
200 µA 10 nA 0.3 V 0.15 + 2
2 mA 100 nA 0.3 V 0.15 + 2
20 mA 1 µA 0.3 V 0.15 + 2
200 mA 10 µA 0.3 V 0.2 + 2
2000 mA 100 µA 0.8 V 0.2 + 2
10 A 1 mA 0.3 V 0.5 + 2*
*Above 5A derate 0.15% rdg per amp for self-heating.
OVERLOAD PROTECTION: mA Input: 2A fuse (250V), externally accessible.
10A Input: 20A for 15s, unfused.
SETTLING TIME: 1 second to within 1 count of final reading.
TRMS AC AMPS
RANGE BURDEN 20Hz–50Hz 50Hz–10kHz 10kHz–30kHz
200 µA–20 mA 0.3 V 1 + 20 0.8 + 20 2 + 50
*Above 1800 counts.
**1kHz max. Above 5A derate 0.15% rdg/amp for self-heating.
SETTLING TIME: 2 seconds to within 15 counts of final reading.
Specifications are subject to change without notice.
MAX.VOLTAGE 18°–28°C ± (%rdg + counts)
200 mA 0.3 V 1 + 20 0.8 + 20 —
2000 mA 0.8 V 1 + 20 0.8 + 20 —
10 A 0.3 V 1.5 + 20** 1 + 20** —
18°–28°C
ACCURACY (1 Year)*
18°–28°C ±(%rdg + counts)
VOLTAGE 18°–28°C
ACCURACY (1 Year)*
OHMS ACCURACY* MAX.VOLTAGE
RANGE RESOLUTION ±(%rdg + counts) ON RANGE
200 Ω 10 mΩ 0.05 + 2* 0.2 V
2kΩ 100 mΩ 0.05 + 1 2.0 V
20 kΩ 1 Ω 0.05 + 2 0.2 V
200 kΩ 10 Ω 0.05 + 1 2.0 V
2MΩ ** 100 Ω 0.05 + 2 0.2 V
20 MΩ ** 1 kΩ 0.2 + 1 2.0 V
200 MΩ ** 100 kΩ 2.0 + 1 2.0 V
*When properly zeroed.
**Appropriate range selected automatically.
MAXIMUM ALLOWABLE INPUT: 450V DC or peak AC.
OPEN-CIRCUIT VOLTAGE: +5V.
DIODE TEST: Display reads junction voltage up to 2V. Test current: 0.7mA nominal.
SETTLING TIME: 2 seconds to within 1 count of final reading on range.
(1 Year) 18°–28°C ACROSS UNKNOWN
IEEE-488 BUS
IMPLEMENTATION
(Model 1753A Option)
MULTILINE COMMANDS: DCL, SDC, GET,
GTL, UNT, UNL, SPE, SPD.
UNILINE COMMANDS: IFC, REN, EOI, SRQ,
ATN.
INTERFACE FUNCTIONS: SH1, AH1, T5,
TE0, L4, LE0, SR1, RL2, PP0, DC1, DT1,
C0, E1.
PROGRAMMABLE PARAMETERS: Range,
REL, dB, EOI, Trigger, Calibration, SRQ,
Status, Output Format, Terminator.
GENERAL
DISPLAY:Backlit 41⁄
and status indication. Backlighting is switch-selectable.
RANGING: Auto or manual on DC volts, AC volts, ohms; manual on
AC amps, DC amps.
AUTORANGING TIME: 300ms per range.
RELATIVE: Pushbutton allows zeroing of on range readings. Allows
readings to be made with respect to baseline value. Front panel
annunciator indicates REL mode.
DATA LOGGER and MIN/MAX: 100 reading storage capacity; records
data at one of six selectable rates from 3 readings/second to 1 reading/hour. Also detects and stores maximum and minimum readings continuously in data logger mode.
CONVERSION RATE: 3 readings per second.
OVERRANGE INDICATION:“OL” displayed.
CREST FACTOR (ratio of peak value to rms value),AC FUNCTIONS: 3.
MAXIMUM COMMON MODE VOLTAGE: 500V peak.
COMMON MODE REJECTION RATIO (1kΩ unbalance): >120dB at
DC, 50Hz, 60Hz ±0.15%. >60dB in AC volts.
TEMPERATURE COEFFICIENT (0°–18°C & 28°–50°C): ±(0.1 × appli-
cable accuracy specification)/°C except ±(0.07% + 2)/°C for 50Hz–
10kHz in AC volts.
ENVIRONMENT: Operating: 0° to 50°C; <80% relative humidity up to
35°C; linearly derate 3% RH/°C, 35° to 50°C. Storage: –40° to +70°C.
WARM-UP: 1 hour to rated accuracy.
POWER: 105–125V or 210–250V (external switch selected), 90–110V
available; 50–60Hz, 12VA. Removable power cord. Optional 6 hour
battery pack, Model 1758.
DIMENSIONS, WEIGHT: 89mm high × 235mm wide × 275mm deep
1
(3
⁄
2
in × 9
ACCESSORIES SUPPLIED: Model 1751 Shrouded Test Leads, instruc-
tion manual.
2
-digit LCD, 0.5 in height; polarity, function, range,
1
3
⁄
⁄
4
in × 10
4
in). Net weight 1.8kg (3 lbs, 14 oz).
HW 8/24/01
Rev. A
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