F-3-6 AC/DC Current Adjustments con't
(should be outputting ~50 mV at this
point)
2) Select the 2.0 amp range and provide 1.0
ampere DC from the DC Current calibrator.
Keep in mind, you have to press/hold the stray
current pushbutton to measure AC/DC current.
Adjust
(located in the middle of the
DMM PCB) to read 1.000 ampere. Verify AC
current with 1.0 amp@ 60Hz input from an
AC/DC Current Calibrator to read within spec
(see section B for specifications)
Since the voltage and current measurements
have just be calibrated in the previous steps, a
verification check of the
and
signal
source is
to any signal
source adjustments (only adjust when neces-
sary). Again, keep all ribbon cables and wiring
intact between the PCBs,
remove the
from its standoff mounts. Slightly
lift and tilt the left hand side of the I-Source PCB
to give you access to the
trimpots
below it ( needed only for access to the signal
source adjustments).
Select the 2.0 V range.
Press and hold the 50mV/5mA Signal Source
pushbutton.
Adjust
located on the
(underneath the I-Source PCB) to read .0500 V .
4.) Next select the 2 amp range.
5.) Press/hold the 50 mV/5mA Signal Source
button at the same time as the 2.0 stray current
press to measure button and
. Adjust RV502 and repeat this step 5
dual button press operation until the AMPTEC
601ES reads .0050 A ( 5 milliamperes).
Return both the
and the
s to their standoff PCB mounts. Return the
nylon washer/insulator to the DVM PCB corner
standoff mount. With all ribbon cabling intact,
re-secure both PCBs to their standoff mounts.
Carefully replace the top panel and umbilical
RV401
F-3-7 50mV/5mA Signal Source Adjustments
50mV
5 mA
recommended prior
I-Source PCB
DMM PCB
1.)
2.)
3.)
RV501
DMM PCB
note the display
reading
I-Source PCB
DVM
PCB
carefully
cabling to it's bezel mount and re-secure the
calibration access screws located around the
perimeter of the 601ES top plate.
To replace low batteries first unscrew the
battery compartment lid and lift. Remove the
battery holder, plastic tie and low batteries.
Replace with a new set of (4) “AA” batteries
according to polarity. Using the spare plastic
tie included in the battery compartment, wrap
the plastic around the battey holder and secure.
Cut excess plastic. Next, wrap the black and
red wire around the battery holder and place the
holder into the compartment. Lastly replace lid
and screw in screws to secure. See diagram
above. *Please note: After replacing battery
holder with (4) new ‘AA’ batteries; secure with
a new plastic tie lock.
F-4. Battery Replacement Instructions
The battery pack replacement process is:
21
