Datasheet

TEK.COM 5
DMM7512 Dual Channel 7½-Digit Sampling Multimeter
RMS NOISE (ADDITIONAL PEAK NOISE UNCERTAINTY)
7
Applies to ±ppm of range.
Peak noise uncertainty is included in DC specifications for ≥1 PLC.
Add peak noise uncertainty to measurements for <1 PLC.
Input impedance set to auto.
Examples 10 V at 0.006 PLC: 1.2 (from Accuracy table) + 11 (additional peak noise uncertainty) = 12.2 ppm of range.
10 V at 1 PLC: 1.2 + 0 = 1.2 ppm of range.
NPLC Digits 100 mV 1 V 10 V 100 V 1000 V
5 7½ 0.5 0.08 0.06 0.3 0.06
1 7½ 0.5 0.09 0.07 0.4 0.07
0.2
8
6½ 2 (10) 0.2 (1.6) 0.1 (1.1) 1.1 ( 9.4) 0.1 (1)
0.2 6½ 2 (12) 0.2 (1.6) 0.1 (1) 1.1 (8.9) 0. 2 (1.1)
0.06 5½ 3 (17) 0.4 (2.7) 0.3 (2.1) 3 (17) 0.3 (2.4)
0.006 4½ 19 (95) 3 (18) 3 (15) 34 (125) 3 (18)
0.0005 3½ 95 (480) 48 (215) 36 (170) 173 (8 00) 40 (205)
DC Voltage Characteristics
ADC Linearity 1.0 ppm of reading + 1.0 ppm of range
Input Impedance 100 mV to 10 V Ranges: Selectable >10 GΩ || <400 pF (auto) or 10 MΩ ±1% (10 MΩ)
100 V to 1000 V Ranges: 10 MΩ ±1%
Input Bias Current <50 pA at 23 °C under the following conditions: Autozero off or input impedance 10 MΩ
Common Mode Current <2.1 µA peak-peak in 1 MHz bandwidth
<100 nA peak-peak in 1 kHz bandwidth
Common Mode Voltage 500 V
PEAK
LO terminal to chassis maximum
DC Voltage Autozero Off Error For ±1 °C and ≤10 minutes, add ±(8 ppm of reading + 15 µV)
Normal Mode Rejection
For DC voltage, line frequency ±0.1%
5 PLC 1 PLC ≤0.2 PLC ≤0.01 PLC
Line Sync On
110 dB 90 dB 45 dB —
Line Sync Off
60 dB 60 dB — —
Common Mode Rejection
For DC voltage and 100 Ω unbalanced in LO terminal
NPLC 5 1 0.2 ≤ 0.2
Line Sync
On On On Off
CMRR
140 dB 140 dB 120 dB 80 dB
NOTES
7. Noise values are based on 1000 readings with autozero on and using low thermal 4-wire short. VRMS noise is typical. Additional peak noise is guaranteed.
8. With line sync on.