Summary Of Interrogations - IET Labs, Inc. RLC Digibridge 1693 User And Service Manual

1693 RLC Digibridge

3.9.3 Summary of Interrogations

Certain status (and results) information is indicated
automatically on the display panels. For example:
Indicators above and below RLC display ─ param-
eter and /or units of measurement.
RANGE HELD ─ autoranging is disabled.
CONST VOLT ─ source resistance held to 25 ohms
(accuracy compromised).
PPM ─ units of D or Q, ANG (not R or X) are parts
per million.
CONST I ─ short circuit current set .
NOT 1KHZ ─ frequency is other than 1 kHz.
RATIO ─ ratio mode is enabled.
Hardly any keyboard indicators lit ─ keyboard is
locked.
Left display "0", right also "0", GO ─ open-circuit
zeroing enabled.
Left display "5", right also "5", GO ─ short-circuit
zeroing enabled.
Left display "6", right also "6", GO ─ calibration
enabled.
Left display "0 14 '', right "blank" ─ measurement
signal overload .
Left display "22222", right "1111" ─ convertor/
detector malfunction.
Left display "22222", right "2222" - convertor/
detector malfunction.
The preceding three lines are explained in paragraph
3.13. Indicators on the keyboard provide important
information, NOT summarized here.
70
The following interrogations will work only if you
select ENTER function:
stored nominal value (appears displayed
[SHIFT] [NOM VAL]
at left).
limits for bin 1 (both displayed , left and
[SHIFT] [BIN NO] [0] [1]
right) .
[SHIFT] [BIN NO] [1] [2] limit s for bin 12 (both displayed).
[SHIFT] [BIN SUM] [0] [3] count in bin (left) ; bin number (right) .
[SHIFT] [FREQUENCY] test frequency , kHz (displayed a t left).
[SHIFT] [CONST I] short circuit current if selected .
test voltage that is applied behind source
[SHIFT] [VOLTAGE]
resistance .
number of measurements (or medians)
[SHIFT] [AVERAGE]
averaged per result .
The following special functions are explained more
fully in paragraph 3.10.
Each response display is: detailed code at left and
special-function number at right.
Interrogation
[SHIFT][SPECIAL][1] present range number
[SHIFT][SPECIAL][2] Code for data output via IEEE-488 bus
[SHIFT][SPECIAL][3] Measurement routine
Milliseconds of delay after start before data
[SHIFT][SPECIAL][4]
is acquired
[SHIFT][SPECIAL][5] Integration time factor (normal: 1)
Displays – meas/nom: 2, nom/meas: 1,
[SHIFT][SPECIAL][6]
normal: 0
[SHIFT][SPECIAL][7] Parameter selection – auto: 1, normal: 0
[SHIFT][SPECIAL][8] If median of 3 meas taken: 1, normal: 0
Version number of Digibridge internal
[SHIFT][SPECIAL][9]
firmware
[SHIFT][SPECIAL][0] ppm offset of source frequency from nominal
IEEE-488 address (2 digit) when this option
[SHIFT][SPECIAL][.]
is installed
The following interrogation will work only if you
select MEASURE function:
[SHIFT][SPECIAL] (hold key down) – All special
functions
Expect 0,1,4 and 9 (see above) that are NOT set to "0".
For example, under default (power up) conditions,
the display is **** *7* (where * represents "blank")
NOTE: special function 7 is initially set to 1; see
Table 2-12. If you set special functions 2 through 8
each to 1, this display will be 2315 678. If you set
these special functions each to 0, this display will be
**** *** (blank).
Detail Code
Operation