Fluke 2620A User Manual

Performance Tests

6

6-9

Using inputs in decades of 1.9:

300 

Ω

short

0.00

0.09

190 

Ω

189.93

190.12

3 k

Ω

short

0.0000

0.0003

1.9 k

Ω

1.8992

1.9008

30 k

Ω

19 k

Ω

18.992

19.008

300 k

Ω

190 k

Ω

189.91

190.09

3 M

Ω

1.9 M

Ω

1.8983

1.9017

Using inputs in decades of 1:

300 

Ω

short

0.00

0.09

100 

Ω

99. 95

100.10

3 k

Ω

short

0.0000

0.0003

3 k

Ω

1 k

Ω

0. 9995

 1.0006

30 k

Ω

10 k

Ω

9. 995

10.005

300 k

Ω

100 k

Ω

99. 94

100.06

3 M

Ω

1 m

Ω

0. 9990

1.0010

10 M

Ω

*

10 M

Ω

9. 979

10.021

*Optional test point if standards available.

Note

All channels (0 through 20) can accommodate 2-terminal resistance measurements. Channel 0, with only
two connections, cannot be used for 4-terminal measurements. Four-terminal resistance measurements
can be defined for channels 1 through 10 only. Channels 11 through 20 are used, as required, for 4-
terminal to provide the additional two connections. For example, a 4-terminal set up on channel 1 uses
channels 1 and 11, each channel providing two connections.

Frequency

90 kHz

10 kHz/2V p-p

9.994

10.006

Assure the Accuracy Verification Test for channel 0 meets minimum acceptable levels
before performing this test.

Thermocouple temperature measurements are accomplished using Hydra Series II’s
internal 100 mV and 1V dc ranges. (The ranges are not configurable by the operator.)
This procedure will provide the means to test these ranges.

To test the 100 mV and 1V dc ranges requires computer interfacing with a host (terminal
or computer). The host must send commands to select these ranges. These ranges cannot
be selected from the front panel of Hydra Series II.

1.

 

Ensure that communication parameters ( i.e., transmission mode, baud rate, parity,
and echo mode) on the Hydra Series II and the host are properly configured to send
and receive serial data. Refer to Chapter 4.

2.

 

Power up Hydra Series II and allow it to temperature stabilize for 1/2 hour.