Teledyne 2002 instruction manual Reset / Restore Commands, Device Status, Page 27 of

Reset / Restore Commands

Command Description	Format	Notes:
Escape	<Esc>	Reset Command Buffer
	.......................................................................................	(Ignore prior Input)
Software Reset	/R<CR>	Reinitialize Software
Restore Factory Defaults	/#<CR>	Restore Calibration Register Default Values
Set Zero	/0 <CR>	Store Present Pressure as Instrument
	..........................................	ZERO (if Piezo <32 Torr & Pirani <50 mTorr)
Force Zero	/!<CR>	Override Limit Checks And Store Present
	.......................................................................	Pressure as Instrument ZERO

Device Status

When requested to transmit its status the Model 2002 responds with a five digit number which is explained in the following:

Digit #	1	2	3	4	5
Serial Receiver Overflow	= 4
Main Board EEPROM Error	= 2
Probe EEPROM (any) Error	= 1
Probe EEPROM Not Responding
		= 8
Probe EEPROM Read Error		= 1
Probe EEPROM Checksum Error			= 4
Probe EEPROM Verification Error			= 2
Probe EEPROM Identification Error			= 1
Communications Syntax Error				= 4
Piezo Sensor Bad (voltage out of range)				= 2
Pirani Sensor Bad (voltage out of range)				= 1
High Setpoint Alarm (pressure exceeds setpoint)
					= 4
Low Setpoint Alarm (pressure less than setpoint)					= 2
Gas# Changed (not the same as when unit last calibrated)					= 1

149-072011 Model 2002 Vacuum Gauge Page 27 of 38