Backdating (Older Pulsers) - HP LOGIC PULSER 546A Operating And Service Manual

Model 546A
Page 37
BACKDATING (OLDER PULSERS)
Backdating applies to Logic Pulser circuit boards with the SERIES and HP part numbers in Table 8.
To adapt this manual to the circuit boards in Table 8, perform the backdating changes that apply to the
circuit board in your Pulser.
Table 8. Manual Backdating
Ckt Bd Manual
Part No. Series No. Backdating Changes
00546-60001 1608 or 1616
00546-60001
1624
00546-60002 1624
CHANGE 1 (00546-60002 Series 1624)
Page 32, Table 6, Replaceable Parts:
Change A 1 series number to 1624.
Add A1DS2; 1990-0582; 1; LED, Red.
Page 36, figure 16, A 1 Schematic Diagram:
Change A 1 series number to 1624.
Add DS2 LED in parallel with DS1.
1, 2, 3
1, 2
1