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OD
Output Diagnostic values, allows the computer to read the values that result from the diagnostic
functions always in the fundamental units of Hz, dB(m), or seconds). There are three diagnostic
functions that can be used with OD:
1
.
100
110
120
130
140
150
2
.
100
110
120
130
3.
100
110
120
130
4.
100
110
120
130
140
150
160
170
180
190
200
210
220
Oscillator frequencies diagnostic:
Programming code SHM1 (keystrokes
[SHIFT] [Mil-
see figure 3-9) activates this diagnostic, which outputs the M value, N value, M/N loop
frequency, and the 20/30 loop frequency. In BASIC:
'
M
OUTPUT 719; "SHM1 OD"
ENTER 719; M, N , R , L
PRINT "M VALUE"; M
PRINT "N VALUE"; N
PRINT "M/N FREQUENCY"; R; "HZ"
PRINT "20/30 LOOP FREQ"; L; "HZ"
remJrTrMnf and Y|G oscillator diagnostic:
Programming code SHM2 (keystrokes
[SHIFT] [M2];
see Figure 3-9) causes the band number and YIG oscillator frequency to be
output, in this order. In BASIC:
y
OUTPUT 719; "SHM2 OD"
ENTER 719; B, Y
PRINT "BAND NUMBER"; B
PRINT "YIG OSC FREQUENCY"; Y; "HZ"
reu.cTi°r«oi00p (PLL) frecluencies diagnostic: Programming code SHM3 (keystrokes
[SHIFT] [M3];
see Figure 3-9) causes the PLL #2 VCO frequency and the PLL #3 upcon-
verter frequency of the 20/30 loop to be output, in this order. In BASIC:
OUTPUT 719; "SHM3 OD"
ENTER 719; F2, F3
PRINT "PLL #2"; F2; "HZ"
PRINT "PLL #3; F3; "HZ"
Diagnostic Tests and Results:
Programming code SHM4 (keystrokes
[SHIFT] [M4];
see
Figure 3-9) causes a series of up to 18 diagnostic tests. These tests are labeled 14 to 31.
Other tests are intiated at "power on". These tests are labeled 0 to 13. Test results are
available from the front panel or as a string of 32 characters over the HP-IB. These charac¬
ters may be either 1 or 0, indicating, respectively, a passed or failed test. In BASIC:
DIM Te51 no$(32) 120]
OUTPUT 719; "SHM4"
FOR I = 1 TO 32
READ Test no$( I )
DATA "PROCESSOR TST"
CKSUM", "ROM 4 CKUSM",
RD/WR", "EEROM 2 RD/WR"
DATA "MRK RAM RD/WR", "PIT (LED REG)",
"ROM 1 CKSUM", "ROM 2 CKSUM", ROM 3
"RAM 1 RD/WR", "RAM 2 RD/WR", "EEROM 1
MARKER RAMP" S"'
6°™ERVeR", "UVELREFMc"'. "MAn'swP
SJJi
"SWP WIDTH
"BRKPNT
NOT
'V/GHz BND ATN'
DAC", "SWP RANGE ATN", "V/GHz CIRCUIT",
1 DAC", "BRK PNT 2 DAC"
DATA "ATN SLOPE DAC", "YO PRETUN DAC", "SWEEPTIME DAC"
USED""A27 INSTALLED"
'
NEXT I
DIM Dt $ I 321
OUTPUT 719; "OD"
ENTER 719; Dt$
FOR I = 1 TO 32
3-68
Operating Information
HP 8340B/41B
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