Clock And Data Interface; Table 3: Clock And Data Interface Codes - Quasonix TIMTER QSX-V Series Installation And Operation Manual

1.3.2

Clock and Data Interface

Clock and data interface codes are listed in Table 3.
Clock
and Data
Interface
Code
TTL – 10k ohms to ground
H
TTL – 75 ohms to ground
T
TTL – Selectable between 75 ohms to ground and 10k ohms to ground
A
TIA/EIA-422 (RS-422) – 120 ohms differential
R
TIA/EIA-422 (RS-422) – 120 ohms differential, even when unit is
B
powered off)
Dual-mode – Selectable between TTL (terminated 10k ohms to ground)
M
and RS-422 (terminated 120 ohms differential)
Dual-mode – Selectable between TTL (terminated 75 ohms to ground)
D
and RS-422 (terminated 120 ohms differential)
Tri-mode – Selectable between TTL (terminated 75 ohms to ground),
S
TTL (terminated 10k ohms to ground), and RS-422 (terminated 120
ohms differential)
L LVDS (Low Voltage Differential Signal)
6 Quasonix, Inc.
TIMTER™ Multi-mode Digital Telemetry Transmitter

Table 3: Clock and Data Interface Codes

Baseband Clock and Data Interface Defaults
TTL 10k ohms
TTL 75 ohms
TTL 75 ohms
422 120 ohms
422 120 ohms
TTL 10k ohms
TTL 75 ohms
TTL 75 ohms
LVDS