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Model 5344S
Operation and Programming
'SYSTEMS
3-110.
in CW mode the 5342A/43A is actually counting the input frequency and updating the
display, in CF/AF and START/STOP modes the display is static. In LOCK/ROLL mode the display
is also normally static, but if the counter being used with the 5344S is a 5343A and the signal source
is an HP 8350A sweeper, the Counter Trigger mode may be invoked on the 8350A to momentarily
stop the sweep and signal the 5344Sto measure a desired frequency (stop or marker). The 8350A's
CNTR TRIG output must be connected to the 5343A's SWP INTFC A input. The sweeper's STOP
SWEEP input must be connected to the 5344A's SWEEP TRIGGER output or to the 5343A's SWP
iNTFC B. Then selecting a frequency parameter on the 8350A front panel and pressing the SHIFT
and M2 keys enables Counter Trigger mode. See
Figure 3-11
Lock/Roll in Manual or
Figure 3-15,
Lock/Roll in Auto Lock for a descriptive procedure.
3-111.
OPERATORS CHECKS
3-112.
5342A/5343A Stand-Alone Operation
3-113.
The 5344A and the 5342A/43A each have power switches that must be set to the ON
position. The order in which they are turned-on doesn't matter. The 5342A (or 5343A) may be
operated alone by applying power only to the counter. However,since the 5344A uses the
counter's microprocessor, if both instruments are ON and the 5344A is switched OFF, the 5342A
must be switched OFF, then ON, to return complete control to the 5342A. This is not required
with the 5343A.
3-114.
Power-Up Self Check
3-115.
On power-up, the 5344S performs its self-test routine. If all tests pass, the 5344S performs
its initialization and then passes control to the 5342A/43A which performs its own self-test and
proceeds to free-run mode (5342A/43A counting; 5344A idle).
3-116.
The power-up values for 5344S parameters are as shown in
Table 3-5:
Table 3-5. 5344S Power-Up Parameters
MODE = CW
CW = STOP = START = 0
AF = 0
MARKERS = 0
SWEEP TIME = 10 ms
STEP SIZE = 0
FREQUENCY MULTIPLIER = 1
LOCK = OFF
RPG KNOB = COARSE
HP-IB: LOCAL
RM =0
3-117.
If during the power-up self-test a failure is detected, an error code will be displayed on
the 5344A as follows:
Err 13 ...Ux ROM Failure
Err 14 .
RAM Failure
where x is the reference designation of the defective ROM located on the All Main ROM Buffer
Assembly.
3-118.
If one of these errors is displayed, refer to Section VIII, Service for further instructions.
3-24
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