174-082010_Digital AVC Page 13 of 17
Character Description Valid Inputs:
m Most Significant Digit Of Mantissa 1 - 9
d Decimal Digit 0 - 9
e Exponent 0 - 5
<CR> Command Terminator (carriage return) N/A
3.4.2 Interrogation Commands.
Command Description Format Sample Response
Get Device ID ID<CR> Digital AVC<CR>
Get Current Pressure if A0 is set, current Set Point P<CR> Pa: 1.23456e+0 Torr<CR>
if A2 is set, heater potentiometer setting if A3 is set
Get Relay Status RS<CR> 1,R1:ON<CR>
Get Setpoint S1<CR> SP1: 1.0240e-2 mbar<CR>
Get Serial Number (10 character max) SN<CR> 1023400012<CR>
Get Sensor Type ST<CR> DV-6<CR>
Get Raw Average Output Voltage – No Offset. U<CR> Vavg: 1.23456e-1 Volts<CR>
Get User Data (10 character max) UD<CR> TextString<CR>
Get Software Version # V<CR> Digital CVT 1.1.0 <CR>
3.4.3 Parameter Modification Commands
Command Description Format Response notes:
Select A/D input 0 A0<CR> none Read from gauge tube
Select A/D input 1 A1<CR> none Read from Setpoint Potentiometer
Select A/D input 2 A2<CR> none Read heater adjust potentiometer
Data streaming/Logging Off P0<CR> none Stops streaming output
Data streaming/Logging On P1<CR> See P cmd (Reports signal Voltage and
pressure in Torr only)
Disable set-point pot. PD<CR> OK Lock out local setpoint adjustment
Enable set-point pot. PE<CR> OK Enable local setpoint adjustment
Modify Setpoint S1={m.dd}E{+e}<CR> OK 1.00000e-9 to 9.99999e+9
Set units to Torr U1<CR> OK All subsequent values in Torr
Set units to Pascal U2<CR> OK All subsequent values in Pascal
Set units to Mbar U3<CR> OK All subsequent values in mbar
Modify User Data UD=TextString<CR> 10 character maximum
Notes:
The User Data is 10 digit text area reserved for use by the customer for identification purposes.
The setpoints may also be entered as a decimal number, e.g. [S1=0.760<CR>] will be same as entering
[H=7.60E-1<CR>] .
When inputting setpoint data, it should be entered in the same Units of Pressure as the presently selected
Units of Measurement (i.e. Torr, mbar or Pascal). The data is only checked to be a valid number with a one
