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4.4 Rate (Frequency) Scaling and Display (Rate Setup)
One of four rate modes may be selected to best accommodate input frequencies ranging from
0.00278 Hz to 30 kHz. Select the rate mode according to Table 8.
Table 8. Rate Mode Selection
Rate can also be displayed as a signed entity and will be negative according to the direction
state (see section 4.3). When B channel is configured for up or down count input, the rate is the
sum of the frequencies at A and B with the polarity of rate determined by the A channel up/
down mode.
Rate Mode
1)
To set the rate mode, enter the Programming Mode and press until the rate setup
menu category is reached.
2)
Press to continue to the parameter name rmmode. The display will flash between rm-
mode and the default setting sec. When the display shows sec, press .
3)
Use the arrow keys to scroll through choices (mm sec, sec, mmin, hr). Press when
correct mode is selected to accept mode and proceed to next parameter, Rate Scale.
Rate Scale
1)
At scale, the display will flash between rscale and the default 01.0000, when the display
shows 01.0000, press .
2)
Use the arrow keys to select the correct value for the flashing digit, press to advance
to the next digit.
3)
When the correct value is displayed, press to accept and proceed to next parameter,
Rate DP.
Rate Decimal Point Position
1)
To set the Decimal Point position, enter the Programming Mode, and press until the
rate setup menu is reached.
2)
Press to continue to the Parameter Name rat dp. The display will flash between rat
dp and the default 000000. When the display shows 000000, press .
3)
Use the arrow keys to scroll through the choices. Press when the correct decimal
place is selected to accept value and proceed to the next parameter name, Rate Offset.
R
ange
(implied scale)
T
ypical
Update
Period
Min. Input
Frequency
Max. Input
Frequency
Comments /
T
ypical Application
m
S
ec
(Hz ÷ 1000)
1.0 sec
1 Hz
30 KHz
1/1000 Hz resolution / High precision
measurement of power line frequency
S
ec
(Hz x 1)
0.5 sec
2 Hz
30 KHz
1 Hz resolution / Typical Setting for most
applications
Min
(Hz x 60)
3 sec
20
Counts/Min
1.2M
Counts/Min
Use when measuring ‘units per Minute'
Hr
(Hz x 3600)
90 sec
40
Counts/Hr
3.0M
Counts/Hr
Measures ‘units per Hour'. Also for very
low frequencies.
ENTER
RESET
ENTER
ENTER
RESET
ENTER
ENTER
ENTER
ENTER
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