Disabling The Input Protect Feature (Optional); Disabling Flash Memory Access (Optional); Disabling The Input Protect Feature; Disabling Flash Memory Access - HP E1313A Manual

Disabling the Input
Protect Feature
(optional)
VOIDS WARRANTY
Disabling Flash
Memory Access
(optional)
26 Getting Started
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Disabling the input protect feature voids the HP E1313/E1413 warranty.
The input protect feature allows the HP E1313/E1413 to open all channel
input relays if any input's voltage exceeds ±19 volts. This feature will help
to protect the card's Signal Conditioning Plug-ons, input multiplexer,
ranging amplifier, and A/D from destructive voltage levels. The level that
trips the protection function has been set to provide a high probability of
protection. The voltage level that is certain to cause damage is somewhat
higher. If, in your application, the importance of completing a
measurement run outweighs the added risk of damage to your
HP E1313/E1413, you may choose to disable the input protect feature.
Disabling the input protection feature voids the HP E1313/E1413 warranty.
To disable the input protection feature, locate and cut JM2202. Make a
single cut in the jumper and bend the adjacent ends apart. See Figures 1-3
and 1-4 for location of JM2202.
The flash memory protect jumper (JM2201) is shipped in the " PROG"
position. We recommend that you leave the jumper in this position so that
all of the calibration commands can function. Changing the jumper to the
protect position means you will not be able to execute:
•
The SCPI calibration command
•
The register-based calibration commands
•
Any application that installs firmware updates or makes any other
modification to flash memory through the A24 window.
With the jumper in the " PROG" position, you can completely calibrate one
or more HP E1413s without removing them from the application system.
An HP E1413 calibrated in its working environment will in general be better
calibrated than if it were calibrated separate from its application system.
The multimeter you use during the periodic calibration cycle should be
considered your calibration transfer standard. Have your Calibration
Organization control unauthorized access to its calibration constants.
See the HP E1313/E1413 Service Manual for complete information on
HP E1313/E1413 periodic calibration.
If you must limit access to the HP E1413's calibration constants, you can
place JM2201 in the protected position and cover the shield retaining screws
with calibration stickers. See Figure 1-4 for the location of JM2201.
See Figure 1-3 for the location of the HP E1313s flash memory protect switch.
CALibration:STORe ADC | TARE
, and
STORECAL STORETAR
Chapter 1