Annexes
R&S
®
ZNC
750
User Manual 1173.9557.02 ─ 13
Time
Description
Value
T1
Pulse duration of /EXTERNAL TRIGGER
Minimum value: 1 μs
T2
Response time of /PASS FAIL STROBE
1 μs
T3
Pulse duration of /PASS FAIL STROBE
1 μs
T4
Pulse duration of /SWEEP END
12 μs
The timing of the data port signals and the input/output signals is as follows:
●
The low pulse of the /WRITE STROBE signal occurs approx. 0.1 μs after a value is
written to the output ports A to D. The pulse duration of the /WRITE STROBE signal
is 1 μs.
●
The low pulse of the /OUTPUT 1 or /OUTPUT 2 signals (if enabled) occur approx.
0.6 μs after the falling edge of the /INPUT 1 signal.
9.2 Maintenance
The R&S ZNC vector network analyzer does not require any special maintenance.
For our support center address and a list of useful R&S contact addresses refer to the
documentation CD-ROM or the "Contact" page at the beginning of the Help system.
9.2.1 Storing and Packing the Instrument
The vector network analyzer can be stored at the temperature range quoted in the data
sheet. When it is stored for a longer period of time the unit should be protected against
dust.
9.2.2 Replacing Fuses
The instrument is protected by two time lag fuses (IEC60127 T3.15H / 250 V, stock no.
0099.6729.00), located in the fuse drawer below the AC power switch on the rear panel.
Shock hazard
Before replacing a fuse, make sure that the instrument is switched off and disconnected
from all power supplies.
Always use fuses supplied by Rohde & Schwarz as spare parts, or fuses of the same
type and rating.
Maintenance
