Model 820 Technical Reference Manual
B-33
142
“Invalid Numeric Entry”
143
“OPEN #”
144
“Already Open”
145
“No History Yet”
146
“At End of History”
147
“At Start of History”
148
“History Format Error”
149
“Unknown I/O Command”
150
“I/O Operand Invalid”
151
“Unable to Calibrate”
152
“EEPROM Write Error”
153
“Memory was Lost, Data Reset!”
154
“RECALL- Not Found”
155
“Function Not Implemented”
156
“System Locked”
157
“A:D Stack Full”
158
“A:D Over-Run”
159
“Serial Port Framing”
160
“Serial Port Line Noisy”
161
“Serial Port Over-Run”
162
“Wait for Stabilization”
163
“Power Turned Off”
164
“Time/Date Not Set!”
165
“Printer Already BUSY”
166
“Lithium Battery Low”
167
“Timer ON Pending”