Totalizer Tests; Rs-232 Totalizer Count Test; Rs-232 Totalizer Count And Enable Test - Fluke 2680A User Manual

the instrument and has been inserted using the Configuration dialog. Use the
relay settings capability shown in the dialog to control the relays.
2. Set Each Relay Pair Set each relay pair. R#1 corresponds to the DIO relays
K1A/K1B.
3. Verify Relays Close Verify that relays close by measuring the contact
resistance. A contact resistance less than 1 Ω is good.

Totalizer Tests

The totalizer tests check the correct operation of the totalizer including the
direction of counting and the signal level sensitivity. These tests can be run either
with RS-232 commands or using Fluke DAQ. For these tests, use the signal
generator to generate the counts. The generator will be connected to the totalizer
input signal line (Σ). Connect the DIO channel 0 signal line to the totalizer enable
line Σen) in the connector module.
If you are using Fluke DAQ to perform the totalizer tests, select the DIO from
TreeView in the Configuration dialog. In the DIO Configuration dialog, Set the
start count in the DIO Configuration dialog to 0, deselect debounce (if selected),
and select direction as up. Click the Communication icon and select the DIO from
the TreeView. Deselect the DIO channel 0 (if selected) to enable the totalizer

RS-232 Totalizer Count Test

1. Initialize Totalizer to Count Up Initialize the totalizer to count up with the
command TOTCFG <direction>,<debounce>, where direction is 1 for up and
debounce is 0 for off.
2. Initialize Totalizer to 0 Initialize the totalizer to 0 with the TOTINIT
command.
3. Read the Totalizer Value Read the totalizer value with the TOT? command.
The value should be zero.
4. Set DIO Set DIO 0 to 0 (off) which will enable the totalizer to count.
5. Set the Generator Set the generator to 10 Hz and 1 V pp and connect to the
totalizer input
6. Verify Totalizer Count Verify that the totalizer count increases by about 10
counts per second in a positive direction.
7. Disconnect Generator Disconnect the signal generator.

RS-232 Totalizer Count and Enable Test

The enable signal is a hardware signal that must be disabled with an externally
connected signal level such as a short to ground)
Maintenance
Accuracy Performance Tests
4
4-31