Operation
Batt OK
This indicator is displayed when the battery is within its normal operating range.
Low Batt
This is a blinking message which indicates that the remaining life of the battery is approximately
30 minutes from the time that the message first appears. Thirty minutes after the warning
appears, the instrument will cease to function on the battery and must be connected to the ac line
for operation and to recharge the battery pack.
Batt Flt
This display indicates a battery fault and that the battery probably cannot be recharged. This fault
can be caused by a shorted cell in the battery pack. Normal operation can continue on ac power.
See the procedure for Battery Removal in Section IX.
Temp Flt
The temperature of the internal battery pack is continuously monitored to allow for optimum
performance and life of the battery. Because of the charging limits imposed by the manufacturer
of the battery pack, the battery must not be charged when its temperature is outside of certain
temperature limits. These limits are between 5°C and 45°C. However, the upper limit in
temperature is increased to 60°C once charging has commenced.
To rectify this situation, place the instrument in an area where the temperature is within
acceptable temperature limits. If necessary, turn off the unit and unplug it from ac power to allow
the internal temperature to cool down sufficiently, then plug it in to reattempt charging.
Other Messages
There are other diagnostic messages that will appear very infrequently if ever. The user should
contact Ectron Corporation Tech Support at 800-732-8159 should one of the following appear.
System Errors
System errors may occur at startup or anytime there is a component failure. If one occurs, the
Model 1140A must be repaired. These errors include: AT25640 EEPROM ERROR, NVDATA
CHECKSUM ERROR, A/D ERRORS, and OPTION BOARD ERRORS.
A/D Subsystem Errors
These errors may occur during alignment. The alignment will be aborted if any appear: NONE,
A/D IS ALWAYS READY, SELF-ALIGNMENT TIMEOUT, INVALID PRE-ALIGN MODE, and INVALID
POST-ALIGN MODE. To complete an alignment, the Model 1140A must be repaired. The unit will
retain the previous alignment data.
Interface Board Errors
These errors are associated with the remote-interface boards that can be installed in the
Model 1140A: UNKNOWN OPTION BOARD IN SLOT #1, UNKNOWN OPTION BOARD IN SLOT #2,
CAN’T FIND [INTERFACE] OPTION BOARD, and [INTERFACE] OPTION BOARD FAILED. These errors
can occur if, for example, the unit’s power is turned off with a GPIB board installed, the user
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