R&S ZVB - Page 1150

R&S
®
ZVA / R&S
®
ZVB / R&S
®
ZVT Annexes
Interfaces and Connectors
Operating Manual 1145.1084.12 – 30 1135
Pin No.
Name
Input (I) or
Output (O)
Voltage Range
Function
6
GNDA
–
0 V
Analog ground
7
GNDA
–
0 V
Analog ground
8
GNDA
–
0 V
Analog ground
9
GNDA
–
0 V
Analog ground
10
GNDA
–
0 V
Analog ground
11
NC
–
–
–
12
DDCDAT
13
14
15
CASCADE
8-pin RJ-45 connector used as output and input connectors for pulse generator signals. The CASCADE
connector is located between the MONITOR and the USER CONTROL connectors.
On older instruments the CASCADE connector may be hidden behind a cover plate. Simply unscrew
the plate if you want to use the connector.
Pin No.
Name
Input (I) or
Output (O) or
Bidirectional (B)
Voltage Range
Function
1
FR_REF_128_IO_P
B
LVDS high
128 MHz reference signal
2
FR_REF_128_IO_N
B
LVDS low
128 MHz reference signal
3
FR_AD_CLK_IO_N
B
LVDS low
80 MHz A/D converter clock
4
RP_CASC_READY_B
B
LVDS low
Ready signal
5
RP_CASC_READY_A
B
LVDS high
Ready signal
6
FR_AD_CLK_IO_P
B
LVDS high
80 MHz A/D converter clock
7
RP_CASC_SYNC_B
B
LVDS low
Synchronization signal
8
RP_CASC_SYNC_A
B
LVDS high
Synchronization signal
USER CONTROL
25-pole D-Sub connector used as an input and output for low-voltage (3.3 V) TTL control signals. Some of
the USER CONTROL lines can be controlled via GPIB bus (see CONTrol... and OUTPut... subsystems).