Option 001: Bcd Parallel Data; D/Q Data - HP 4262A Operating And Service Manual

Model 4262A
340. OPTION OPERATION.
3-41. Operating instructions for Options 001,
004, and 101 are described in the following para¬
graphs.
342. OPTION 001: BCD PARALLEL DATA
OUTPUT.
3-42. The 4262A Option 001 provides parallel
BCD outputs for LCR display, D/Q display and in¬
formation for various control settings. These
outputs are fed to two 50 pin connectors on the
rear panel.
344. Output Data and Pin Assignment.
345. The 4262A Option 001 provides eight
kinds of output data:
(1) FUNCTION and CIRCUIT MODE.
(2) Test Signal Frequency (LOW LEVEL or
normal is excluded).
(3) Annunciator: Normal, Overflow, Uncal,
(LCR and D/Q are not annunciated).
(4) Unit: p, n,M, m, k, M, D, Q (judgement
whether capacitance, inductance or resis¬
tance depends on output of FUNCTION
switch setting information).
(5) Decimal Point.
(6) Polarity.
(7) Displayed value.
(8) Other Input/Output Signals.
Section III
Paragraphs 3-40 to 3-48
The signal pin assignments for the 50 pin con¬
nector are shown in Figure 340. When these
signals are fed to digital printer, the print-out is
given as a 10 digit decimal number.
346. Alternate Output of LCR and D/Q Data.
BCD outputs for LCR and D/Q data of 4262A
Option 001 can be alternately supplied through
one 50 pin BCD LCR DATA OUTPUT connector
on rear panel. This alternate output is enabled by
changing slide switch setting on printed circuit
board P/N 04262-66535. PC board 04262-66535 is
located nearest to the rear panel in the right hand
row of PC boards. Normal setting of the four
section slide switch for parallel output and the set¬
ting for alternate output are illustrated below.
Normal
Parallel output: Alternate output:
347. Output Timing.
348. Timing charts for parallel (simultaneous)
output and alternate output are shown in Figure
3-41.
3-27