Agilent Technologies 75000 Series C, E1445A 88 Adjustments A gilent E1445A Service Manual

DC Adjustment Procedure (cont’d)
Adjustment Procedure
1. Reset the AFG:
*RST;*CLS Reset AFG and clear
status registers
2. Enable calibration on the AFG:
CAL:SEC:STAT OFF, <security code> Cal security off
where <code> is the AFG’s security code (fa ctory-set to "E1445A").
3. Send the command to start the DC adjustment ro utine and wait for the
command to complete:
CAL:DC:BEGIN
*OPC?
The AFG will return a "1" when ready.
Repeat steps 4 through 6 for calibration po in ts 1 - 44 :
4. If the current calibration point is listed in Table 3-2, set up the DMM
as specified. Otherwise, do not change the DMM se ttings. Note the
special instructions for the following po int s:
Cal Point 31. Immediately after performing the DMM
measurement for cal point 30 (and before sending the r eading to
the AFG) set the DMM range to 10 V. This will prevent an
overload when the AFG sets itself for the next r e ad ing.
Cal Point 41. Immediately before setting up the DMM for cal
point 41, take a reading using the DMM settings for cal point 40.
This will provide a DC offset reading. Next, set up the DMM
for cal point 41 as specified in Table 3-2. Then use the DC offse t
reading and Table 3-1 to determine the appropriate DMM range
for subsequent calibration points.
Cal Point 43. Same instructions as cal point 41.
88 Adjustments A gilent E1445A Service Manual