Fluke 8845A - Emc; Triggering; Memory; Math Functions

8845A/8846A
Users Manual
1-10
EMC
Designed to comply with IEC 61326-1:2000-11 (EMC) when used with shielded communications cables. This Meter has
shown susceptibility to radiated frequencies greater than 1 V/m from 250 to 450 MHz.
Triggering
Samples per Trigger ........................................... 1 to 50,000
Trigger Delay ...................................................... 0 s to 3600 s; in 10 μS increments
External Trigger Delay ........................................ <1 mS
External Trigger Jitter ......................................... <500 μS
Trigger Input ....................................................... TTL Levels
Trigger Output..................................................... 5 V maximum (open collector)
Memory
8845A.................................................................. 10,000 measurements, internal only
8846A.................................................................. 10,000 measurements, internal, and up to 2 Gigabyte capacity with
USB memory module (available separately, see “Accessories”) through
front-panel USB port
Math Functions
Zero, dBm, dB, MX+B, Offset, DCV ratio and TrendPlot, Histogram, Statistics (min/max/average/standard deviation), and
Limit Test
Electrical
Input Protection....................................................... 1000 V all ranges
Overrange ............................................................... 20 % on all ranges except 1000 V dc, 1000 V ac (8846A),
750 V ac (8845A), Diode, and 10 A ranges
Remote Interfaces
RS-232C, DTE 9-pin, 1200 to 230400 baud (RS-232C to USB cable available to connect the Meter to a PC USB port.
See Accessories)
IEEE 488.2
LAN and “Ethernet 10/100 base T with DHCP (for IP_ADDRess) option”
Warranty
Three years limited
Specification Confidence Interval
99%
Electrical Specifications
Accuracy specifications are valid for 6½ digit resolution mode after at least a 1-hour warm-up with Auto Zero enabled.
24-hour specifications are relative to calibration standards and assume a controlled electromagnetic environment per
EN 61326-1:2000-11
DC Voltage Specifications
Maximum Input ....................................................... 1000 V on any range
Common Mode Rejection ....................................... 140 dB at 50 or 60 Hz ±0.1 % (1 kΩ unbalance)
Normal Mode Rejection .......................................... 60 dB for NPLC of 1 or greater with analog filter off and power line
frequency ±0.1 %
100 dB for NPLC of 1 or greater with analog filter on and power line
frequency ±0.1 %
Measurement Method ............................................. Multi-ramp A/D
A/D Linearity ........................................................... 0.0002 % of measurement +0.0001 % of range
Input Bias Current ................................................... <30 pA at 25 °C