Vetek DGT, Technical Manual

Page: 25 / 87

DGT / DGT60 / DGTQ / DGTP
25
diSPLA DISPLAY TEST
By pressing PRINT the instrument turns on all the display segments one at a time, after which it exits
automatically from the step.
KEYb. KEYBOARD TEST
By pressing PRINT the instrument displays 0000; by pressing the keys one at a time, the relative codes are
brought again to the display. One exits pressing the same key three times.
SEr
RS232 SERIAL PORT TEST
By pressing PRINT the instrument displays " S xy" in which x indicates the status of the printer serial port while y
indicates the status of the PC serial port. Both can take on two values:
0 Serial port does not work
1 Serial port works
DGT and DGT60 models
During the test one should short-circuit TX with RX (in the RS232 terminal).
Furthermore the ASCII "TEST"<CRLF> string is continuously transmitted on both the serial lines.
CAREFUL : It’s not possible to test the functioning of the RS485 port.
DGTQ model
During the test one should short-circuit A(+) with B(-) (in the COM1 terminal) and TX with RX (in the COM2
terminal).Furthermore the ASCII "TEST"<CRLF> string is continuously transmitted on both the serial lines.
CAREFUL
: It’s not possible to test the functioning of the COM1 port if configured like RS485.
DGTP model
During the test one should short-circuit TX1 with RX1 (in the COM1 terminal) and TX2 with RX2 (in the COM2
terminal).Furthermore the ASCII "TEST"<CRLF> string is continuously transmitted on both the serial lines.
CAREFUL
: It’s not possible to test the functioning of the COM1 port if configured like RS485.
CtS.St TEST OF THE CTS STATUS
By pressing PRINT one views the status/level of the CTS signal of the printer (on) connected to the PRN serial
port.
outPut TEST OF THE OUTPUTS
By pressing
PRINT
the instrument displays "rEL.1" and enables output 1; press the ZERO or TARE key to enable
the other output.
InPutS
TEST OF THE INPUTS
By pressing PRINT the instrument displays " i.bx-y" in which x, y indicate:
x – the input which is controlling 1 and 2; to change the input which one wants to control press the ZERO or
TARE keys.
y - the input status:
0 Disabled input
1 Enabled input
Anout ANALOGUE OUTPUT TEST
If the instrument is fitted with the analogue output (DGT4 AN, DGTQ AN and DGTP AN models), through this step
one can test if the values of the D/A converter (to be entered at time of calibration) correspond with the relative
values of the analogue output (in voltage or in current), see paragraph 7 "ANALOGUE OUTPUT (DGT4 AN and
DGTQ AN models)".
By pressing PRINT the display shows 00000; enter a value between 00000 and 65535 and confirm with PRINT;
the instrument will supply the corresponding analogue value in output.
To exit the test confirm twice with PRINT the same entered value.
rotAry ROTARY SWITCH (only in the DGTP version)
By pressing ENTER the display shows the value of the ROTARY SWITCH input.