ES51998(60000counts)
DMM Analog front end/Insulation
Pin Description
Pin No
Symbol
BUFH
CAZH
NC
Type
Description
1
2
3
O
O
-
High-speed buffer output pin. Connect to integral resistor.
High-speed auto-zero capacitor connection.
Not connected
4
5
CL+
CL-
IO Positive connection for reference capacitor of high-resolution A/D.
IO Negative connection for reference capacitor of high- resolution A/D.
6
7
8
9
10
11
12
13
14
CIL
O
O
O
O
O
O
O
O
I
High-resolution integrator output. Connect to integral capacitor.
High-resolution auto-zero capacitor connection.
High-resolution Buffer output pin. Connect to integral resistor
Buffer output pin in AZ and ZI phase.
Filter capacitor connection for resistance mode.
Filter capacitor connection for resistance mode.
Filter capacitor connection for resistance mode.
Output of band-gap voltage reference. Typically –1.23V
De-integrating voltage positive input. The input should be higher than
VA-.
CAZL
BUFL
RAZ
OHMC3
OHMC2
OHMC1
VRH
VA+
15
VA-
I
De-integrating voltage negative input. The input should be lower than
VA+.
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
EXTSRC
IRVH1
IRVH0
OR1
VR5
VR4
VR3
VR2
OVSG
VR1
OVX
OVH
OVH1
IRR5
IRR4
IRR3
IRR2
IRR1
IRVG
IRVL
SGND
IVSH
I
O
O
O
O
O
O
O
O
I
External source input available for Res/Diode/ADP mode
High voltage measurement range1 for insulation R mode
High voltage measurement range0 for insulation R mode
Reference resistor connection for 600.00Ω range
Voltage measurement ÷10000 attenuator(1000.0V)
Voltage measurement ÷1000 attenuator(600.00V)
Voltage measurement ÷100 attenuator(60.000V)
Voltage measurement ÷10 attenuator(6.0000V)
Sense low voltage for resistance/voltage measurement
Measurement Input. Connect to a precise 10MΩ resistor.
Sense input for resistance/capacitance measurement
Output connection for resistance measurement
Output connection1 for resistance measurement (optional)
Test mode used (optional)
Current shunt resistor4 connection for insulation R mode
Current shunt resistor3 connection for insulation R mode
Current shunt resistor2 connection for insulation R mode
Current shunt resistor1 connection for insulation R mode
Voltage measurement terminal low-side of shunt resistor
Voltage measurement terminal high-side of shunt resistor
Signal Ground.
I
O
O
I
I
I
I
I
I
I
G
I
Current measurement input for 6000.0μA, 600.00mA and 60.000A
modes.
38
39
40
41
42
43
IVSL
ADP
OPIN-
OPIN+
OPOUT
ACVL
I
I
I
I
O
O
Current measurement input for 600.00μA, 60.000mA.
Measurement input in ADP mode.
Independent operational amplifier negative input
Independent operational amplifier positive input
Independent operational amplifier output
DC signal low input in ACV/ACA mode. Connect to negative output
of external AC to DC converter.
44
ACVH
O
DC signal high input in ACV/ACA mode. Connect to positive output
of external AC to DC converter.
45
46
47
48
ADI
ADO
TEST5
CA-
I
O
O
Negative input of internal AC-to-DC OPAMP.
Output of internal AC-to-DC OPAMP.
Buffer output of OVSG
IO Negative auto-zero capacitor connection for capacitor measurement
ver. 1.7
3
12/01/12
CYRUSTEK [ Cyrustek corporation ]
