
Masterclock
GMR
User
Manual
v2
–
2016.12
13
TCG:
TIME
CODE
GENERATOR
MODULE
Reads
SMPTE
24,
25,
30
‐
fps
non
‐
drop
frame
and
SMPTE
29.97
drop
frame,
IRIG
‐
B
(A
and
E
optional),
amplitude
modulated
and
pulse
width
coded
(un
‐
modulated)
Time
code
signal
accuracy:
200
nanosecond
Single
‐
ended
unbalanced
or
differential
balanced
outputs
DB9
breakout
adapter
available
for
differential
balanced
output
(GMR1000
only,
not
needed
on
GMR5000)
Programmable
delay
offset
with
1
µS
resolution
PPS
(PULSE
PER
SECOND)
OUTPUT
5V
TTL
(Transistor
‐
Transistor
Logic)
level
signal
locked
to
the
most
accurate
time
reference
Accuracy
compared
to
top
of
second
of
GPS
reference:
±
70
nanoseconds
Rising
edge
of
the
PPS
signal
provides
the
“on
time”
mark
Standard
on
GMR5000
PPO:
PROGRAMMABLE
PULSE
OUTPUT
Pulse
interval
and
duration
can
be
selected
via
software
from
100
μ
s
to
3
days
Pulse
output
is
5Vpp
from
a
low
impedance
source
Pulse
width
selectable
from
10
μ
seconds
to
100
m
sec
Accuracy
is
same
as
the
current
reference
source
(i.e.
GPS,
time
code,
NTP,
etc.)
10
MHZ
SINE
WAVE
FREQUENCY
INPUT
AND
OUPUT
9V
Peak
to
Peak
unloaded
at
50
Ohm,
6V
Peak
to
Peak
with
high
impendence
load
at
50
Ohm
SYNC
‐
IN
•
Sync
to
PPS,
PPM
or
PPH
input
PROGRAMMABLE
DRY
CONTACT
RELAY
(24VDC,
250MA)
Single
event
(daily)
programmable
relay
schedule
Standard
on
GMR5000