Rohde & Schwarz ZNB20, Руководство пользователя

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Annexes
R&S
®
ZNB/ZNBT
1252 User Manual 1173.9163.02 ─ 38
10.2.1 Rear Panel Connectors
The rear panel of the R&S ZNB/ZNBT provides various connectors for external devices
and control signals.
10.2.1.1 USER PORT
25-pole D-Sub connector used as an input and output for low-voltage (3.3 V) TTL con-
trol signals. Some of the lines can be configured (see
CONTrol Commands and OUT-
Put Commands ).
Table 10-1: User Port: Pole Assignment
Pin No. Name Input (I) or
Output (O)
Function
1 AGND - Ground
2 UC_EXT_TRG_IN I External trigger 1 input, 5 V tolerant *)
3 AGND - Ground
4 UC_BUSY O Hardware measurement time
5 AGND - Ground
6 READY FOR TRIGGER O Measurement completed, ready for new trigger
7 AGND - Ground
8 UC_CH_BIT0 O Channel bit 0;
see
CONTrol:AUXiliary:C[:DATA]
and
OUTPut<Ch>:UPORt[:VALue]
9 UC_CH_BIT1 O Channel bit 1
10 UC_CH_BIT2 O Channel bit 2
11 UC_CH_BIT3 O Channel bit 3
12 AGND - Ground
13 UC_PASS1 O Pass/fail result of limit check 1; TTL Out Pass 1 (see TTL1
Pass / TTL2 Pass )
14 UC_PASS2 O Pass/fail result of limit check 2; TTL Out Pass 2
15 AGND - Ground
16 UC_DRV_PORT1 O Used as drive ports (
OUTPut:UPORt:ECBits
OFF ) or
channel bits (
OUTPut:UPORt:ECBits ON
; default)
If used as drive ports, DRIVE PORT i is active while test
port i is the source port.
If used as channel bits, the pin states can be defined using
OUTPut<Ch>:UPORt[:VALue]
.
17 UC_DRV_PORT2 O
18 UC_DRV_PORT3 O
19 UC_DRV_PORT4 O
20 AGND - Ground
Interfaces and Connectors