1587 FC/1587/1577 
Users Manual 
14 
Table 7. Error Messages 
Message Description 
 
Appears on the primary display and indicates that 
the battery is too low for reliable operation. The 
Meter will not operate at all until the battery is 
replaced. The  also appears when  is on 
the primary display. 
 
Appears on the secondary display and indicates 
that the battery is too low to perform an insulation 
test. The  button is disabled until the battery 
is replaced. This message disappears when the 
rotary switch is turned to any other function. 
 
Appears when an open thermocouple is detected. 
 
Test lead alert. The message appears briefly and a 
single beep will sound when you move the switch 
in or out of the c position. 
-- 
 
Model detect error. Service Meter if this is 
displayed. 
  Meter cannot discharge a capacitor. 
 
 
Invalid EEProm data. Have the Meter serviced. 
 
 
Invalid calibration data. Calibrate the Meter. 
 
Input Terminals 
Input terminals are shown and described in Table 8. 
Table 8. Input Terminal Descriptions 
. 
1
2
3
4
 
bav04f.eps 
Item Description 
p
 input terminal for insulation test. 
q
 input terminal for insulation test. Use for ac and dc 
milliamp measurements to 400 mA and current 
frequency measurements. 
1577: input terminal for voltage, continuity, resistance 
1587: input terminal for voltage, continuity, resistance, 
diode, capacitance, voltage frequency, and 
temperature measurements. 
Common (return) terminal for all measurements except 
insulation test. 
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