Quasonix TIMTER Installation And Operation Manual page 14

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
M
ground) 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)
1.3.3 Serial Control Interface
Serial control interface codes are listed in Table 3.
Serial Control
Interface Code
1
2
T
4
6
1.3.4 ARTM Tier 0 (PCM/FM)
ARTM Tier 0 codes are listed in Table 5.
6 Quasonix, Inc.
Table 3: Clock and Data Interface Codes
Baseband Clock and Data Interface
Table 4: Serial Control Interface Codes
Serial Control Interface
LVTTL
RS-232
TTL
RS-422
RS-422, 120 ohms differential, even when unit is powered off
TIMTER™ Multi-mode Dual
Telemetry Transmitter
Defaults
TTL 10k ohms
TTL 75 ohms
TTL 75 ohms
422 120 ohms
422 120 ohms
422 10k ohms
422 75 ohms
422 75 ohms
LVDS