GW Instek APS-9000 Series - Manual (Page 6)

APS-9301 & APS-9501 & APS-9102 User’s Manual
10
(29) ‘A ’Key
Ammeter selection key of multimeter LED display
(30) ‘W ’ Key
Wattage meter selection key of multimeter LED display.
(31) ‘PF’ Key
Power factor meter selection key of multimeter LED display.
(32) ‘LOCK’ Key
Lock / Unlock keyboard selection key.
(33)Lock Indicator
The lock indicator lights to indicate the keyboard is locked. All other keys
Except ‘RESET’ are disabled.
(34)Outlet
Output socket
Caution:
The maximum AC voltage is up to 300V. Do not touch the
output sockets when the OUTPUT indicator appears lit.
APS-9301 & APS-9501 & APS-9102 User’s Manual
11
5. Calibration
The calibration of APS-9301/9501/9102 has been done in the factory. If it
is necessary to do the calibration again, the procedures can be followed as:
1.Check if the APS-9301/9501/9102 works normally. Then turn off the
APS-9301/9501/9102.
2.Press the ‘LOCK’ key continuously meanwhile turn on the APS-
9301/9501. The key of ‘LOCK’ must be pressed for 2 seconds at least
until the LED Display steady. Then APS-9301/9501/9102 is in the
calibration mode.
3. Selection of APS-9301,APS-9501 and APS-9102
Use the ‘▲’ key of frequency to choose the correct mode of APS series.
The numbers are as following:
00: means APS-9301
01: means APS-9501
02: means APS-9102
4. Voltmeter Calibration
a. Press the ‘PF’ key , the APS-9301/9501/9102 will offset the voltmeter
and provide a approximate 240V’s output voltage.
b. Connect a standard true RMS voltmeter to the output socket of APS-
9301/9501/9102
c. Use the key ‘ ▲ ’ and ‘ ▼ ’ of voltage to adjust the APS-
9301/9501/9102’s output voltage till to 240V exactly.
d. Press the key ‘LOCK’, the calibration is completed.
5.Ammeter Calibration
There are low and high ranges calibration for ammeter
A. Low range calibration
1) Make sure the Coarse indicator is extinguished. If the coarse indicator
appears lit, press ‘COARSE’ key to put out the indicator.
2) Press the key ‘A’, APS-9301/9501/9102 will offset the low range of
ammeter and provide a 110V’s output voltage automatically.