E-935-1-E
5
4. DESCRIPTION OF FUNCTIONS
１
. Power Functions
(1)
“
DC IN
”
connector
……
Connects to the furnished AC adaptor.
(2)
“
POWER
”
switch
……
Furnishes power to the circuitry when turned on. The Input and output counter
LEDs light up at the same time.
This checker operates on a two-way power supply system. When this switch is turned on with no
external power furnished through the ac adaptor, the instrument operates on internal batteries.
The batteries are of rechargeable type and good for about 5 hours of operation if fully charged in
24 hours. (Connected to an external power source through the ac adaptor, the batteries will be fully
charged in 24 hours with power switch off.)
When the battery terminal voltage drops below serviceable level, the input and output counter LCDs
begin to flicker.)
Although the checker is serviceable for 10 to 15 minutes with the LCDs flickering, it is recommended
that the batteries be recharged immediately or an ac power be furnished through the ac adaptor to
eliminate possible erratic operation.
The batteries should be replaced every year, although their life may vary depending on the given
operating conditions.
2. Input Functions
(1)
“
INPUT
”
terminals
“
SIG
”
……
Input terminals to accept pulse signals with selectable trigger level.
“
GATE
”……
Input terminals to accept gate pulses.
Trigger level: 2.5V
Hysteresis: 0.1V
Pulse width response: 1
μ
s min.
Frequency response: 5Hz max.
“
0V
”
:
……
Common 0V line
(2)
“
INPUT LEVEL
”
Select Switch
This checker has no internal power supply for pulse generators. It therefore cannot drive directly the
pulse generators described in the“Receive Signal”columns above.
So, couple with other receiving instrument which has an internal power supply and pick up its signal only.
In case of PA04, 05, 45 or PG60A (E), it may be“6”depending on the position of picking up the signal.
Select
Trigger Level
Hysteresis
Response Freq.
Receive Signal
15
1.5V
0.1V
300kHz
Voltage pulse signal at IC level
OC
11.3k
Ω
20k
Ω
10kHz
Pulse signal of no voltage (W/pull up resistor)
3
3.0V
0.1V
10kHz
PG30
6
6.0V
0.2V
10kHz
PG30S
18
18.0V
0.6V
10kHz
PA04, 05, 45 and PG60A (E)
［18］IS CHOSEN
［6］IS CHOSEN
P C 2 2 0 1
P C 2 2 0 1
SIG
SIG
INPUT
INPUT
0V
0V
PULSE
GENERATOR
PULSE
GENERATOR
510Ω
510Ω
24V
24V
SIG
SIG
0V
0V
RECEIVING INSTRUMENT
CAUTION:
CAUTION:
