FS9721_LP3

Rev. 2.1

11/39

FLCD

LCD Frame Frequency

32

Hz

VLCD

LCD Pk-Pk Driver Voltage

2.8

3

3.2

V

FBEEP

Beeper Frequency

2.7

kHz

FRS232

RS232 Baud Rate

2400

bit

IRSOUT

RS232 Output High Current

VOH=2V

2

mA

Zero Input Reading

DC ADPxl

Input=0V

-0.001

0.000

0.001

Linearity (Max. Deviation

From Best Straight Line Fit

DC ADPxl，

Input,Full

Scale±240.0mV

-1

0

+1

Counts

AC Measurement Bandwidth

Error

AC ADPxl

Input240mVrms

20Hz~1kHz

0.2

%

Rcc

Continuity Check Value

10

60

Ohm

ADC Measurement O.L

Display Count

4050

Counts

Autorange Up Counts

4000

Counts

Autorange Down Counts

360

Counts

VFREA

Frequency Counter Input

Level (Hz/Duty Control)

VIL(Relative to

AGND)

-60

mV

VIH(Relative to

AGND)

60

mV

FMAXA

Frequency Counter Max

Input frequency (Hz/Duty

Control)

Vpp=±100mV

Square Wave

Input

500k

Hz

*1

Duty Measurement Min

Pulse Width Error (Hz/Duty

Control)

Vpp=±100mV

Square Wave

Input

1

μS

VFRED

Frequency Counter Input

Level (MEAS=0101)

VIL(Relative to

AGND)

-600

mV

VIH(Relative to

AGND)

600

mV

FMAXD

Frequency Counter Input

Level (MEAS=0101)

Vpp=±600mV

Square Wave

Input

5M

Hz

*1

Duty Measurement Min

Pulse Width

Error(MEAS=0101)

Vpp=±600mV

Square Wave

Input

100

nS

Capacitor Measurement

Accuracy after Zero Input

Relative. To adjust with

512.0nF Mode Standard

51.20 nF Mode

2%+10

Counts

512.0 nF Mode

0.5%+3

Counts

5.120 μF Mode

1%+2

Counts

51.20 μF Mode

1.5%+2

Counts

*1 If input square wave during duty cycle measurement, then the deviation is mainly from the analyzable pulse

width of the comparator itself. If the value is an input 100kHz square wave, we can divide the square wave into

1000 parts (1000Counts), and each part is 10nS. Therefore the largest deviation in duty cycle measurement is

(100nS/10nS)=10Counts. The output 50.0% signal may be measured 50.0%±1.0%, and the signal that larger

than 99% or smaller than 1% may not be measured, then it will display 0.00%.

10. Measurement Mode Select

10.1 Measurement Mode Select (MEA1〜MEA4: Open is “1”; Connect to VSS is “0”)

ME

A4

ME

A3

ME

A2

ME

A1

Measurement Function and

SELECT Key Function Switch

Hz/Duty

Rel

Hold Range Select

Jumper

①

1

1

1

1

②

DCV/ACV

DCV/ACV Switch

V/Hz/Duty Switch

●

●

●

●

J4

1

1

0

1

Ohm/Diode/Co

nt./Cap

CAP=1:Ohm/ Diode

/Cont. Switch

CAP=0:Ohm/

Diode/Cont.

/Cap Switch

●

●

Ohm

●

●

J3, J5